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Viewsonic Pro8100 questionnaire for all owners

post #1 of 25
4/24/10 at 6:31am
Thread Starter 
This is a questionnaire for the owners of the Viewsonic Pro8100 only. It is meant to try and understand how prevalent the horizontal banding problem is on this projector and to try and understand what might make some projector's horizontal banding (HB) worse than others. Please take the time to fill it out. Please let me know if there are questions that I should add/remove. Thank you.

1. Have you ever noticed HB when watching your projector's image? (yes or no. If no, skip to question 2)

1a) What sort of scenes do you notice HB most often in?
1b) Is there anything that seems to make the HB less noticeable?
1c) Is there anything that seems to make the HB more noticeable?
1d) How many hours were on your unit when you started noticing HB?
1e) Have you notified Viewsonic of your HB?
1f) If you've had a HB effected projector replaced by VS, did the replacement also have HB (if yes, how many have you had)?

2. What is your build date?

3. What is your seating distance from the screen?

4. What is your screen size, gain?

5. Are your settings optimized for the blackest blacks or for a brighter image?

6. Have you tried using a 2nd party power cord?

7. Have you modified your projector at all? eg. new filter, shielding etc.

8. Are there any large appliances connected to the same circuit as your projector?

9. What sort of cables (and their length) are connected to your projector?

10. Is your projector ceiling or shelf mounted?

11. How is your projector plugged in? (eg directly to outlet, surge protector)

12. Have you tried a 2 prong adapter and was it effective?

13. Have you tried an Isolation Transformer and was it effective?
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post #2 of 25
4/24/10 at 6:38am
Thread Starter 
1. Have you ever noticed HB when watching your projector's image? (yes or no. If no, skip to question 2)
YES

1a) What sort of scenes do you notice HB most often in?
bright scenes/objects when movement is occurring
1b) Is there anything that seems to make the HB less noticeable?
setting my picture for a darker image, but it doesn't eliminate the problem
1c) Is there anything that seems to make the HB more noticeable?
setting things brighter
1d) How many hours were on your unit when you started noticing HB?
noticeable within the first hour
1e) Have you notified Viewsonic of your HB?
yes
1f) If you've had a HB effected projector replaced by VS, did the replacement also have HB (if yes, how many have you had)? no replacement yet

2. What is your build date? January 2010

3. What is your seating distance from the screen? 9 feet

4. What is your screen size, gain? 108", gain of 1.2

5. Are your settings optimized for the blackest blacks or for a brighter image? brighter image

6. Have you tried using a 2nd party power cord? no

7. Have you modified your projector at all? eg. new filter, shielding etc. no

8. Are there any large appliances connected to the same circuit as your projector? none

9. What sort of cables (and their length) are connected to your projector?
15 foot HDMI

10. Is your projector ceiling or shelf mounted? shelf at present

11. How is your projector plugged in? (eg directly to outlet, surge protector)
directly into an outlet
12. Have you tried a 2 prong adapter and was it effective? not tried

13. Have you tried an Isolation Transformer and was it effective? not tried
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post #3 of 25
4/24/10 at 11:29am
Quote:
Originally Posted by Keopele View Post

This is a questionnaire for the owners of the Viewsonic Pro8100 only. It is meant to try and understand how prevalent the horizontal banding problem is on this projector and to try and understand what might make some projector's horizontal banding (HB) worse than others. Please take the time to fill it out. Please let me know if there are questions that I should add/remove. Thank you.

1. Have you ever noticed HB when watching your projector's image? (yes or no. If no, skip to question 2)
YES

1a) What sort of scenes do you notice HB most often in?
Lighter backgrounds, blue skies, concrete buildings, grey objects
1b) Is there anything that seems to make the HB less noticeable?

1c) Is there anything that seems to make the HB more noticeable?

1d) How many hours were on your unit when you started noticing HB?
Immediately
1e) Have you notified Viewsonic of your HB?
No

2. What is your build date?
Jan 2010

3. What is your seating distance from the screen?
Approx 12 feet

4. What is your screen size, gain?
90"

5. Are your settings optimized for the blackest blacks or for a brighter image?
HB visible regardless of black level

6. Have you tried using a 2nd party power cord?
Yes

7. Have you modified your projector at all? eg. new filter, shielding etc.
No

8. Are there any large appliances connected to the same circuit as your projector?
No

9. What sort of cables (and their length) are connected to your projector?
12' Power and HDMI

10. Is your projector ceiling or shelf mounted?
Ceiling

11. How is your projector plugged in? (eg directly to outlet, surge protector)
UPS

12. Have you tried a 2 prong adapter and was it effective?
No, cutting the ground doesn't sound safe

13. Have you tried an Isolation Transformer and was it effective?

Have not tried one.
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post #4 of 25
4/24/10 at 4:44pm
Quote:
Originally Posted by Keopele View Post

This is a questionnaire for the owners of the Viewsonic Pro8100 only. It is meant to try and understand how prevalent the horizontal banding problem is on this projector and to try and understand what might make some projector's horizontal banding (HB) worse than others. Please take the time to fill it out. Please let me know if there are questions that I should add/remove. Thank you.

1. Have you ever noticed HB when watching your projector's image? (yes or no. If no, skip to question 2) No

1a) What sort of scenes do you notice HB most often in?
1b) Is there anything that seems to make the HB less noticeable?
1c) Is there anything that seems to make the HB more noticeable?
1d) How many hours were on your unit when you started noticing HB?
1e) Have you notified Viewsonic of your HB?

2. What is your build date? 2-08 (New), 1-08 (refurb), 5-08 (refurb)

3. What is your seating distance from the screen? 18'

4. What is your screen size, gain? 110", Wilsonart matte Designer White

5. Are your settings optimized for the blackest blacks or for a brighter image? I like 'em

6. Have you tried using a 2nd party power cord? Nope

7. Have you modified your projector at all? eg. new filter, shielding etc. Nope

8. Are there any large appliances connected to the same circuit as your projector? Nope

9. What sort of cables (and their length) are connected to your projector? 25' Monoprice HDMI, component video, composite video, S video

10. Is your projector ceiling or shelf mounted? Ceiling

11. How is your projector plugged in? (eg directly to outlet, surge protector) Cyber Power UPS

12. Have you tried a 2 prong adapter and was it effective? Nope, NA

13. Have you tried an Isolation Transformer and was it effective? Nope, NA

Hope this helps. Thanks for setting up.
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post #5 of 25
4/24/10 at 6:25pm
No HB YET!
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post #6 of 25
4/24/10 at 6:46pm
Ditto, no HB here either. I shut off the power each night, which eliminated VB, so now all is well.
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post #7 of 25
4/25/10 at 7:04am
1. Have you ever noticed HB when watching your projector's image? (yes or no. If no, skip to question 2)
Yes
1a) What sort of scenes do you notice HB most often in? Moving images (light colors)
1b) Is there anything that seems to make the HB less noticeable?
It got less noticeable when I moved from HDMI1 to HDMI2
1c) Is there anything that seems to make the HB more noticeable?
Unaware of one so far
1d) How many hours were on your unit when you started noticing HB?
4
1e) Have you notified Viewsonic of your HB?
Not yet...
2. What is your build date?
Nov 2009
3. What is your seating distance from the screen?
12 to 15
4. What is your screen size, gain?
110 to 120; projected on white wall, no gain.
5. Are your settings optimized for the blackest blacks or for a brighter image?
The darker the image, the less noticeable, brighter its more noticeable
6. Have you tried using a 2nd party power cord?
Not yet
7. Have you modified your projector at all? eg. new filter, shielding etc.
Not yet
8. Are there any large appliances connected to the same circuit as your projector?
Aside from rest of HT equipment and a sump pump... no.
9. What sort of cables (and their length) are connected to your projector?
One 25ft HDMI 22awg cable from monoprice
10. Is your projector ceiling or shelf mounted?
Shelf at the moment
11. How is your projector plugged in? (eg directly to outlet, surge protector)
Directly to outlet at the moment
12. Have you tried a 2 prong adapter and was it effective?
Not yet
13. Have you tried an Isolation Transformer and was it effective?
Not yet
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post #8 of 25
4/25/10 at 7:30am
Thread Starter 
Thanks to everyone who has replied so far. Hopefully lots more will also answer. To those that do not have any HB, could you please answer questions 2-13 or at least tell us your build date? Thanks
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post #9 of 25
4/25/10 at 9:09am
Hi. Thanks for this. I joined the forum so I could contribute here. Just got this projector this week from TD and was very disappointed to see the banding problem. Went to the Internet and found that I'm not alone. I've tried a few things with no success.

1. Have you ever noticed HB when watching your projector's image? (yes or no. If no, skip to question 2)

Yes, I get horizontal banding and vertical banding. The vertical banding will fade if I let it cool and unplug it for a few minutes.

1a) What sort of scenes do you notice HB most often in?

Light colors, shades of white, light skin tones, and light blue show the banding most, but if I get close I can see that the pattern is over the whole image.

1b) Is there anything that seems to make the HB less noticeable?

No. It seems to be more prominent at certain times, but I can't correlate that to any event or action that I can reproduce.

1c) Is there anything that seems to make the HB more noticeable?

No. Except getting closer to the screen.

1d) How many hours were on your unit when you started noticing HB?

I noticed it from the minute I turned it on. I saw the banding and thought that something was wrong with my source. It didn't occur to me until later that it was a defect in the projector.

1e) Have you notified Viewsonic of your HB?

Not yet. I just got the projector and I'm still deciding whether to send it back to TD. Holding out hope for a simple solution.

2. What is your build date?

Don't know, but likely to be the most recent. Received from TD in April 2010. It's currently mounted on the ceiling and I don't want to take it down to look.

3. What is your seating distance from the screen?

~12 ft

4. What is your screen size, gain?

100 inches 1.1 gain white screen

5. Are your settings optimized for the blackest blacks or for a brighter image?

Currently more bright than black. I have tried nearly every combination of settings on the projector and have not been able to eliminate the banding. I have not updated the firmware, though and I'm currently on 2.1

6. Have you tried using a 2nd party power cord?

yes, no difference visible.

7. Have you modified your projector at all? eg. new filter, shielding etc.

no

8. Are there any large appliances connected to the same circuit as your projector?

no. The projector is in a basement that is on a separate circuit. I have tried shutting off everything in the house that I thought might cause interference. Fluorescent lights, wi-fi, baby monitor. No difference noted.

9. What sort of cables (and their length) are connected to your projector?

15 ft hdmi that is switched by a Denon receiver, power cable. Have also noticed the banding when testing with with a 6ft hdmi running to the projector from a laptop (running on battery.) I have tried turning off scaling on the receiver, and trying sources at different resolutions and 24p. No change in the banding.

10. Is your projector ceiling or shelf mounted?

Currently it's on the ceiling, but I also noticed the horizontal banding when testing the projector on a shelf.

11. How is your projector plugged in? (eg directly to outlet, surge protector)

Tried direct to wall, UPS and surge protector. No difference noted.

12. Have you tried a 2 prong adapter and was it effective?

Yes, it was not effective.

13. Have you tried an Isolation Transformer and was it effective?

No, have not tried one.
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post #10 of 25
4/26/10 at 6:42am
1. Have you ever noticed HB when watching your projector's image? (yes or no. If no, skip to question 2) Yes

1a) What sort of scenes do you notice HB most often in? Bright
1b) Is there anything that seems to make the HB less noticeable? Darker scenes and good calibration
1c) Is there anything that seems to make the HB more noticeable? N/A
1d) How many hours were on your unit when you started noticing HB? 44
1e) Have you notified Viewsonic of your HB? No

2. What is your build date? 2010

3. What is your seating distance from the screen? 13'

4. What is your screen size, gain? 120", 1.2

5. Are your settings optimized for the blackest blacks or for a brighter image?
Bright Accurate image

6. Have you tried using a 2nd party power cord? No

7. Have you modified your projector at all? eg. new filter, shielding etc.
No

8. Are there any large appliances connected to the same circuit as your projector? No

9. What sort of cables (and their length) are connected to your projector?

25' HDMI

10. Is your projector ceiling or shelf mounted? Ceiling

11. How is your projector plugged in? (eg directly to outlet, surge protector)
Directly to Outlet

12. Have you tried a 2 prong adapter and was it effective? Yes, I like to think so

13. Have you tried an Isolation Transformer and was it effective?
No
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post #11 of 25
4/26/10 at 9:10am
1. Have you ever noticed HB when watching your projector's image? (yes or no. If no, skip to question 2)
No
1a) What sort of scenes do you notice HB most often in?
1b) Is there anything that seems to make the HB less noticeable?
1c) Is there anything that seems to make the HB more noticeable?
1d) How many hours were on your unit when you started noticing HB?
1e) Have you notified Viewsonic of your HB?

2. What is your build date?
12/09
3. What is your seating distance from the screen?
9'
4. What is your screen size, gain?
108" Draper 1.0 matt white
5. Are your settings optimized for the blackest blacks or for a brighter image?
Calibrated for eco mode using CalMan and an i1D2
6. Have you tried using a 2nd party power cord?
No
7. Have you modified your projector at all? eg. new filter, shielding etc.
Yes - new Endust filter
8. Are there any large appliances connected to the same circuit as your projector?
No, dedicated circuit
9. What sort of cables (and their length) are connected to your projector?
HDMI - 5' from PS/3 to Onkyo 876, 40' from Onkyo to Pro8100
10. Is your projector ceiling or shelf mounted?
Shelf
11. How is your projector plugged in? (eg directly to outlet, surge protector)
Direct
12. Have you tried a 2 prong adapter and was it effective?
Never tried
13. Have you tried an Isolation Transformer and was it effective?
Never tried
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post #12 of 25
4/26/10 at 10:01am
[1. Have you ever noticed HB when watching your projector's image? (yes or no. If no, skip to question 2) NO

1a) What sort of scenes do you notice HB most often in?
1b) Is there anything that seems to make the HB less noticeable?
1c) Is there anything that seems to make the HB more noticeable?
1d) How many hours were on your unit when you started noticing HB?
1e) Have you notified Viewsonic of your HB?

2. What is your build date?Feb 2008

3. What is your seating distance from the screen? 14'

4. What is your screen size, gain? 120" Elite Power Gain 1.8 (closer to 1.4 actual)

5. Are your settings optimized for the blackest blacks or for a brighter image? Fully calibrated image

6. Have you tried using a 2nd party power cord? No

7. Have you modified your projector at all? eg. new filter, shielding etc. Replaced factory filter with Endust filter and it works very well

8. Are there any large appliances connected to the same circuit as your projector? No, dedicated circuit

9. What sort of cables (and their length) are connected to your projector? 15' HDMI from AVR

10. Is your projector ceiling or shelf mounted? Shelf mounted

11. How is your projector plugged in? (eg directly to outlet, surge protector) Surge protector

12. Have you tried a 2 prong adapter and was it effective? N/A

13. Have you tried an Isolation Transformer and was it effective?[/quote] N/A
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post #13 of 25
4/26/10 at 2:06pm
Quote:
Originally Posted by jimjimmyjones85 View Post

1
2. What is your build date? 2010

What month was your build date? Are you getting it off the label on the bottom of the PJ?
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post #14 of 25
4/27/10 at 7:17am
[1. Have you ever noticed HB when watching your projector's image? (yes or no. If no, skip to question 2) Yes
1a) What sort of scenes do you notice HB most often in? light colored, fast moving scenes, vary bad in faces
1b) Is there anything that seems to make the HB less noticeable? no
1c) Is there anything that seems to make the HB more noticeable? no
1d) How many hours were on your unit when you started noticing HB? immediately on all
1e) Have you notified Viewsonic of your HB? Yes, on all 3 units and they still claim they have never heard of this problem

2. What is your build date? Jan 2010 on all 3

3. What is your seating distance from the screen? 13'

4. What is your screen size, gain? 120"

5. Are your settings optimized for the blackest blacks or for a brighter image? blacks

6. Have you tried using a 2nd party power cord? No

7. Have you modified your projector at all? eg. new filter, shielding etc. None on any of the 3

8. Are there any large appliances connected to the same circuit as your projector? Probably. On this last unit I used a circuit that only services the garage. It has it's own breaker box and nothing was on at the time.

9. What sort of cables (and their length) are connected to your projector? 25' HDMI from Monoprice. Run directly from player and run through my receiver (no difference) on both HDMIs. Also, ran component from blu ray

10. Is your projector ceiling or shelf mounted? Shelf mounted

11. How is your projector plugged in? (eg directly to outlet, surge protector) tried a Monster power filter (could have been junk)

12. Have you tried a 2 prong adapter and was it effective? Yes, no

13. Have you tried an Isolation Transformer and was it effective? No
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post #15 of 25
4/27/10 at 10:49am
Quote:
Originally Posted by Keopele View Post

This is a questionnaire for the owners of the Viewsonic Pro8100 only. It is meant to try and understand how prevalent the horizontal banding problem is on this projector and to try and understand what might make some projector's horizontal banding (HB) worse than others. Please take the time to fill it out. Please let me know if there are questions that I should add/remove. Thank you.

1. Have you ever noticed HB when watching your projector's image? (yes or no. If no, skip to question 2)

1a) What sort of scenes do you notice HB most often in?
1b) Is there anything that seems to make the HB less noticeable?
1c) Is there anything that seems to make the HB more noticeable?
1d) How many hours were on your unit when you started noticing HB?
1e) Have you notified Viewsonic of your HB?

2. What is your build date?

3. What is your seating distance from the screen?

4. What is your screen size, gain?

5. Are your settings optimized for the blackest blacks or for a brighter image?

6. Have you tried using a 2nd party power cord?

7. Have you modified your projector at all? eg. new filter, shielding etc.

8. Are there any large appliances connected to the same circuit as your projector?

9. What sort of cables (and their length) are connected to your projector?

10. Is your projector ceiling or shelf mounted?

11. How is your projector plugged in? (eg directly to outlet, surge protector)

12. Have you tried a 2 prong adapter and was it effective?

13. Have you tried an Isolation Transformer and was it effective?

1. NO

2. 02/10

3. 18'

4. 120", 1.3 gain.

5. Brighter.

6. No, OEM.

7. Yes, Endust filter to the outside of OEM filter (facing exterior, white side OUT.)

8.No.

9. Over 50' of 24 awg Monoprice HDMI from Monoprice PRO 4/1 splitter supplying signals from Dish 722 receiver and Bluray player.

10. Shelf.

11. Plugged into surge protector.

12. No. OEM 3-prong cord.

13. NO isolation transformer.

Yer welcome..........

Ed
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post #16 of 25
4/27/10 at 3:48pm
1. Have you ever noticed HB when watching your projector's image? (yes or no. If no, skip to question 2)
YES

1a) What sort of scenes do you notice HB most often in?
bright scenes/objects when movement is occurring
1b) Is there anything that seems to make the HB less noticeable?
eliminating ground prong, HB is still there but less visible
1c) Is there anything that seems to make the HB more noticeable?
haven't done exclusive testing on this one
1d) How many hours were on your unit when you started noticing HB?
I'm on my third unit now, in first two HB appeared at around 15-20 hours. In third one it was there from the beginning.
1e) Have you notified Viewsonic of your HB?
yes

2. What is your build date?
1st: November 2009, 2nd: January 2010 3rd: February 2010

3. What is your seating distance from the screen?
12 feet

4. What is your screen size, gain?
100", gain of 0.9

5. Are your settings optimized for the blackest blacks or for a brighter image? Have tried several different settings, all have had HB. Haven't notified which settings are worst / best

6. Have you tried using a 2nd party power cord?
yes, included power cord is ridiculously short

7. Have you modified your projector at all? eg. new filter, shielding etc.
no

8. Are there any large appliances connected to the same circuit as your projector?
not sure

9. What sort of cables (and their length) are connected to your projector?
25 foot HDMI

10. Is your projector ceiling or shelf mounted?
ceiling

11. How is your projector plugged in? (eg directly to outlet, surge protector)
through UPS. Also tried directly to outlet and 220V input voltage through step up converter. All are pretty similar
12. Have you tried a 2 prong adapter and was it effective?
yes, this has been the only thing that has helped so far. HB is still there, but less noticeable (quite a lot actually)

13. Have you tried an Isolation Transformer and was it effective?
not tried

Even though I tried step up converter for 220V input voltage and it didn't help, I haven't seen anyone reporting HB problems using "real" 220V input voltage...
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post #17 of 25
4/27/10 at 4:29pm
Quote:
Originally Posted by jetty View Post

1e) Have you notified Viewsonic of your HB? Yes, on all 3 units and they still claim they have never heard of this problem

See my post #5901 over on the main thread.
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post #18 of 25
4/27/10 at 4:59pm
1. NO

2. What is your build date? MAY 2008

3. What is your seating distance from the screen? 15 FEET

4. What is your screen size, gain? 159" 2.8 GAIN

5. Are your settings optimized for the blackest blacks or for a brighter image? NEITHER ONE

6. Have you tried using a 2nd party power cord? YES FROM ANOTHER PROJECTOR

7. Have you modified your projector at all? eg. new filter, shielding etc. NO

8. Are there any large appliances connected to the same circuit as your projector? A SUB-W00FER AND A PIONEER RECEIVER

9. What sort of cables (and their length) are connected to your projector? HDMI 25' AND 35'

10. Is your projector ceiling or shelf mounted? TABLE

11. How is your projector plugged in? (eg directly to outlet, surge protector) SURGE PROTECTOR

12. Have you tried a 2 prong adapter and was it effective? NEVER TRIED ONE

13. Have you tried an Isolation Transformer and was it effective? NEVER TRIED ONE
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post #19 of 25
4/27/10 at 8:53pm
1. Have you ever noticed HB when watching your projector's image? (yes or no. If no, skip to question 2) Yes

1a) What sort of scenes do you notice HB most often in? Areas of light, solid color, e.g. anime skin tones
1b) Is there anything that seems to make the HB less noticeable? No
1c) Is there anything that seems to make the HB more noticeable? No
1d) How many hours were on your unit when you started noticing HB? 2
1e) Have you notified Viewsonic of your HB? Yes, notified them of "faint horizontal lines throughout the image"

2. What is your build date? February 2010

3. What is your seating distance from the screen? 10'

4. What is your screen size, gain? 94", 1.0

5. Are your settings optimized for the blackest blacks or for a brighter image? Blacks

6. Have you tried using a 2nd party power cord? No

7. Have you modified your projector at all? eg. new filter, shielding etc. No

8. Are there any large appliances connected to the same circuit as your projector? No

9. What sort of cables (and their length) are connected to your projector? HDMI, 6 ft

10. Is your projector ceiling or shelf mounted? Shelf

11. How is your projector plugged in? (eg directly to outlet, surge protector) UPS

12. Have you tried a 2 prong adapter and was it effective? Tried, no noticeable improvement

13. Have you tried an Isolation Transformer and was it effective? No
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post #20 of 25
4/29/10 at 1:56am
Three Pro8100s, A, B, and C.

1. Have you ever noticed HB when watching your projector's image? (yes or no. If no, skip to question 2)

A, yes. B, yes. C, yes.

1a) What sort of scenes do you notice HB most often in?

Bright scenes. Movement, just before or during shot changes.

1b) Is there anything that seems to make the HB less noticeable?

Low lamp modes. Trying to ignore it.

1c) Is there anything that seems to make the HB more noticeable?

See 1(a).

1d) How many hours were on your unit when you started noticing HB?

A, 10 hrs. B, 0 hrs. C, 0 hrs.

1e) Have you notified Viewsonic of your HB?

No. Exchanges via Tiger Direct.

1f) If you've had a HB effected projector replaced by VS, did the replacement also have HB (if yes, how many have you had)?

N/A

2. What is your build date?

2/2010 for all three.

3. What is your seating distance from the screen?

16'.

4. What is your screen size, gain?

2.35:1, 12'x5', 1.25 gain.

5. Are your settings optimized for the blackest blacks or for a brighter image?

Brighter image.

6. Have you tried using a 2nd party power cord?

Yes.

7. Have you modified your projector at all? eg. new filter, shielding etc.

No.

8. Are there any large appliances connected to the same circuit as your projector?

No.

9. What sort of cables (and their length) are connected to your projector?

None except power. HB shows in focusing screen.

10. Is your projector ceiling or shelf mounted?

Ceiling.

11. How is your projector plugged in? (eg directly to outlet, surge protector)

Surge protector.

12. Have you tried a 2 prong adapter and was it effective?

N/A.

13. Have you tried an Isolation Transformer and was it effective?[/quote]

N/A.
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post #21 of 25
4/29/10 at 8:17am
1. Have you ever noticed hb when watching your projector's image? (yes or no. If no, skip to question 2)
yes
1a) what sort of scenes do you notice hb most often in?
light color with no detail scenes, especially watching an old b&w movie
1b) is there anything that seems to make the hb less noticeable?
no
1c) is there anything that seems to make the hb more noticeable?
no
1d) how many hours were on your unit when you started noticing hb?
100 hours, but it may exist since day one
1e) have you notified viewsonic of your hb?
no
1f) if you've had a hb effected projector replaced by vs, did the replacement also have hb (if yes, how many have you had)?
mine has not been replaced
2. What is your build date?
end of 2009
3. What is your seating distance from the screen?
10 feet
4. What is your screen size, gain?
100"
5. Are your settings optimized for the blackest blacks or for a brighter image?
no
6. Have you tried using a 2nd party power cord?
no
7. Have you modified your projector at all? Eg. New filter, shielding etc.
no
8. Are there any large appliances connected to the same circuit as your projector?
no, it's stand alone
9. What sort of cables (and their length) are connected to your projector?
hdmi
10. Is your projector ceiling or shelf mounted?
yes
11. How is your projector plugged in? (eg directly to outlet, surge protector)
directly
12. Have you tried a 2 prong adapter and was it effective?
it is on a 2 prong
13. Have you tried an isolation transformer and was it effective?
no
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post #22 of 25
4/29/10 at 8:53am
1. Have you ever noticed HB when watching your projector's image? (yes or no. If no, skip to question 2) YES

1a) What sort of scenes do you notice HB most often in? LIGHT BACKGROUNDS, SKIN TONES, FAST MOVING SCENES
1b) Is there anything that seems to make the HB less noticeable? NO
1c) Is there anything that seems to make the HB more noticeable? NO
1d) How many hours were on your unit when you started noticing HB? SINCE PURCHASE AND INSTALLATION)
Have you notified Viewsonic of your HB? YES

2. What is your build date? JAN 2010

3. What is your seating distance from the screen? 10 TO 14 FEET

4. What is your screen size, gain? 115" 0.9 HIGH CONTRAST GREY

5. Are your settings optimized for the blackest blacks or for a brighter image?
BLACK LEVEL

6. Have you tried using a 2nd party power cord? YES - PANGEA AC14

7. Have you modified your projector at all? eg. new filter, shielding etc. NO

8. Are there any large appliances connected to the same circuit as your projector? NO
9. What sort of cables (and their length) are connected to your projector?
SINGLE HDMI FROM MARANTZ AVR 25'

10. Is your projector ceiling or shelf mounted? CEILING

11. How is your projector plugged in? (eg directly to outlet, surge protector)
OUTLET (PS AUDIO POWER PORT, ISOLATED GROUND, HOSPITAL GRADE)

12. Have you tried a 2 prong adapter and was it effective? NO

13. Have you tried an Isolation Transformer and was it effective? NO
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post #23 of 25
4/29/10 at 10:35am
1. Have you ever noticed HB when watching your projector's image?
Yes. Original and replacement unit, both new. Second one more noticeable.

1a) What sort of scenes do you notice HB most often in?
Light Colors, Pure white backgrounds, grays, skin tones

1b) Is there anything that seems to make the HB less noticeable?
Low lamp mode

1c) Is there anything that seems to make the HB more noticeable?
Standard lamp mode. Brighter image tuning.

1d) How many hours were on your unit when you started noticing HB?
Immediately

1e) Have you notified Viewsonic of your HB?
Yes, but they claim it's not a known issue.

1f) If you've had a HB effected projector replaced by VS, did the replacement also have HB (if yes, how many have you had)?
Replaced by TigerDirect.com, both have issue

2. What is your build date?
Not sure. Firmware 2.1, 2.5 no change in visibility of issue

3. What is your seating distance from the screen?
10'

4. What is your screen size, gain?
100", white matte painted wall

5. Are your settings optimized for the blackest blacks or for a brighter image?
Brighter image

6. Have you tried using a 2nd party power cord?
Yes

7. Have you modified your projector at all? eg. new filter, shielding etc.
No

8. Are there any large appliances connected to the same circuit as your projector?
Connected to surge protector with a computer, PS3, modem, router, Wii, external HDD; Receiver connected to same 1 gang wall plate as surge protector. Any combination of them being on/off doesn't affect issue.

9. What sort of cables (and their length) are connected to your projector?
(2) 6' HDMI, 6' component, 6' power

10. Is your projector ceiling or shelf mounted?
Shelf

11. How is your projector plugged in?
Surge Protector

12. Have you tried a 2 prong adapter and was it effective?
Have not tried

13. Have you tried an Isolation Transformer and was it effective?
Have not tried
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post #24 of 25
5/22/10 at 10:31pm
1. Have you ever noticed HB when watching your projector's image? (yes or no. If no, skip to question 2)NO

1a) What sort of scenes do you notice HB most often in?
1b) Is there anything that seems to make the HB less noticeable?
1c) Is there anything that seems to make the HB more noticeable?
1d) How many hours were on your unit when you started noticing HB?
1e) Have you notified Viewsonic of your HB?
1f) If you've had a HB effected projector replaced by VS, did the replacement also have HB (if yes, how many have you had)?

2. What is your build date? Jan 2010
3. What is your seating distance from the screen? 10'
4. What is your screen size, gain? 100"

5. Are your settings optimized for the blackest blacks or for a brighter image?Neither

6. Have you tried using a 2nd party power cord? no, but will (need longer)
7. Have you modified your projector at all? eg. new filter, shielding etc. No

8. Are there any large appliances connected to the same circuit as your projector? Lamp, psp

9. What sort of cables (and their length) are connected to your projector? 35' hdmi
10. Is your projector ceiling or shelf mounted? Shelf
11. How is your projector plugged in? (eg directly to outlet, surge protector)surge protector

12. Have you tried a 2 prong adapter and was it effective? no need

13. Have you tried an Isolation Transformer and was it effective? no need
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post #25 of 25
5/24/10 at 8:07am
Quote:
Originally Posted by Keopele View Post

This is a questionnaire for the owners of the Viewsonic Pro8100 only. It is meant to try and understand how prevalent the horizontal banding problem is on this projector and to try and understand what might make some projector's horizontal banding (HB) worse than others. Please take the time to fill it out. Please let me know if there are questions that I should add/remove. Thank you.

1. Have you ever noticed HB when watching your projector's image? (yes or no. If no, skip to question 2)

1a) What sort of scenes do you notice HB most often in?
1b) Is there anything that seems to make the HB less noticeable?
1c) Is there anything that seems to make the HB more noticeable?
1d) How many hours were on your unit when you started noticing HB?
1e) Have you notified Viewsonic of your HB?
1f) If you've had a HB effected projector replaced by VS, did the replacement also have HB (if yes, how many have you had)?

Saw what looked like HB only once - in a light green underwater scene of Das Boot. Could have been the movie or transfer - this one dates back to 1981. I've never seen it on any other movie.

2. What is your build date?

Jan 2010

3. What is your seating distance from the screen?

About 14'

4. What is your screen size, gain?

108"; unity gain (1.0) or less less (using blackout fabric stretched on a frame for screen)

5. Are your settings optimized for the blackest blacks or for a brighter image?

Neither - Calibrated using pluge signal so it should be reference level (or as close to it as I can get w/o a meter). Iris setting 3.

6. Have you tried using a 2nd party power cord?

No

7. Have you modified your projector at all? eg. new filter, shielding etc.

New filter (Endust from Wal-Mart).

8. Are there any large appliances connected to the same circuit as your projector?

No appliances but lots of audio gear

9. What sort of cables (and their length) are connected to your projector?

25' Wirelogic HD 505 HDMI cable from Costco.

10. Is your projector ceiling or shelf mounted?

Still sitting on the box it came in.

11. How is your projector plugged in? (eg directly to outlet, surge protector)

Belkin PF 60 power console (surge supressor / power conditioner)

12. Have you tried a 2 prong adapter and was it effective?

Not needed

13. Have you tried an Isolation Transformer and was it effective?

Not needed

Maybe about 60 hours on projector now, lamp in eco mode.
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