Viewsonic Pro8100 1080p Projector - Page 309 - AVS Forum
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post #9241 of 9260 Old 10-10-2014, 02:41 PM
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I see that the thermostat connects directly to the power supply.

Would a faulty or disconnected thermostat cause a no-power condition?
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post #9242 of 9260 Old 10-10-2014, 03:29 PM
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I would think any tech that works on this type of hardware could determine if it's the power supply or components surrounding it.

They should be able to determine if it's the thermostat or not.
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post #9243 of 9260 Old 10-10-2014, 06:00 PM
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Heh... just realized that the bulb (original) outlasted the power supply. He even bought a spare lamp. Should have bought a spare PSU.

Let's hope my 8100 doesn't suffer the same fate any time soon. I've only put 800hrs on mine over the last 4.5 years.
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post #9244 of 9260 Old 11-15-2014, 03:19 PM
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hi guys

I had to change my basement setup and now have to hang my precious viewsonic 8100 from the ceiling

Any good recommendations for a ceiling mount that you are currently using

thanks

J
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post #9245 of 9260 Old 11-16-2014, 11:18 PM
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Quote:
Originally Posted by jtheman View Post
hi guys

I had to change my basement setup and now have to hang my precious viewsonic 8100 from the ceiling

Any good recommendations for a ceiling mount that you are currently using

thanks

J
I got mine from Mounts and More on-line but I don't remember the part number for it. I doubt they carry it anymore anyway.
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post #9246 of 9260 Old 11-17-2014, 07:46 AM
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Originally Posted by jtheman View Post
hi guys

I had to change my basement setup and now have to hang my precious viewsonic 8100 from the ceiling

Any good recommendations for a ceiling mount that you are currently using

thanks

J
My first choice would be an RPMA217. My second choice would be an RPA217 and my third choice would be an RPAU. If we can help you, give us a call.

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post #9247 of 9260 Old 11-17-2014, 02:59 PM
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Quote:
Originally Posted by jtheman View Post
hi guys

I had to change my basement setup and now have to hang my precious viewsonic 8100 from the ceiling

Any good recommendations for a ceiling mount that you are currently using

thanks

J
MonoPrice has a good selection of inexpensive mounts ...


http://www.monoprice.com/Search/Inde...rojector+mount


Myself, I'd just fabricate one since it's pretty easy ..

Uncle Willie


Oddball: Why don't you knock it off with them negative waves? Why don't you dig how beautiful it is out here? Why don't you say something righteous and hopeful for a change?
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post #9248 of 9260 Old 11-19-2014, 10:37 AM
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Quote:
Originally Posted by sebberry View Post
I see that the thermostat connects directly to the power supply.

Would a faulty or disconnected thermostat cause a no-power condition?
Just make a test wire and wire around the thermostat/high temp limiter. That way you can determine if the thermostat is the source of the problem. If you are not comfortable doing it yourself most any electronic tech could try it for you. I still like my Pro8100. I have around 3000 hours on the original bulb, but about 500 hours or so ago I had to bump the bulb settings off of "Eco" and set it to "Normal". The fan runs a little harder and make a little more noise, but the image quality is just as good. I will however, have some decision making to do if it needs a new bulb. My friend has a new Optoma entry-level 1080p machine and it sure looks nice for what he paid for it. What do you guess it will cost to get a top quality bulb, OEM or not, to replace in the Viewsonic? Thanks and hope your projector can be repaired and enjoyed!
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post #9249 of 9260 Old 11-19-2014, 10:51 AM
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The first repair shop wanted to replace the PSU - part not available from VS.
The second shop didn't want to probe the PSU and test it at all.
The third shop pulled some diodes and transistors out of circuit but they all tested OK.
The fourth shop suspects one of the ICs and has a part on order I think and will let me know in a day or two if it can be fixed. If anyone can fix it, this guy can. He's an older Chinese fellow and his shop is stacked to the nines with electronics. I have to turn sideways to walk through the place.

Oh the effort I go to to ensure I have happy customers
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post #9250 of 9260 Old 11-19-2014, 11:20 AM
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Quote:
Originally Posted by sebberry View Post
The first repair shop wanted to replace the PSU - part not available from VS.
The second shop didn't want to probe the PSU and test it at all.
The third shop pulled some diodes and transistors out of circuit but they all tested OK.
The fourth shop suspects one of the ICs and has a part on order I think and will let me know in a day or two if it can be fixed. If anyone can fix it, this guy can. He's an older Chinese fellow and his shop is stacked to the nines with electronics. I have to turn sideways to walk through the place.

Oh the effort I go to to ensure I have happy customers
I guess the high temperature cutout was working then. Good luck and hope you can repair the PSU. Like Dragonman said, I would not have thought that the PSU was proprietary to Viewsonic, but I guess so.
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post #9251 of 9260 Old 11-22-2014, 09:47 AM
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I am needing to replace my bulb. Any ideas other than the Viewsonic Lamp Module? I am pretty handy and could swap just the bulbs if I had to.
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post #9252 of 9260 Old 11-22-2014, 10:04 AM
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Quote:
Originally Posted by 257roberts View Post
I am needing to replace my bulb. Any ideas other than the Viewsonic Lamp Module? I am pretty handy and could swap just the bulbs if I had to.

The MWAVE lamps have had mixed reviews here .. although my experience has been good ..


otherwise :
http://www.projectorlampsource.com/V...sYOxoC58_w_wcB


http://www.amazon.com/Viewsonic-Repl.../dp/B00A553PWK


http://www.newegg.com/Product/Produc...9SIA15412S5524


If, at my next lamp change, I don't have a good experience with an inexpensive lamp, I'll probably begin seriously considering moving on, I had the opportunity to check out an LG PF85U and an Optoma HD50, either of which I think I can place in my HT ..

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post #9253 of 9260 Old 11-22-2014, 06:57 PM
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Quote:
Originally Posted by jtheman View Post
hi guys

I had to change my basement setup and now have to hang my precious viewsonic 8100 from the ceiling

Any good recommendations for a ceiling mount that you are currently using

thanks

J
I made a shelf type out of beach plywood. It's been there go about 4 years. I'd like to build a new one but just for a different style.
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post #9254 of 9260 Old 11-22-2014, 08:50 PM
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Thanks Dragonman, I hope an inexpensive bulb will work, I doubt I would put in $350 in the Viewsonic. The LG machine looks nice with LED's and no bulbs, but wouldn't be bright enough for my room. I may try the mwave bulb.
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post #9255 of 9260 Old 12-09-2014, 01:13 PM
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Hello Folks!
Been awhile. Just stopped in to say I've ordered a lamp off amazon.ca (clt imports) and will report back my findings in the coming weeks. $155+shipping. Says it's original Phillips/osram bulb with generic housing.

Over 3500hrs on original bulb and it's gotten dimmer (used mostly on normal), so decided to go for it after holding off last year.

Hope this goes well!!!
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post #9256 of 9260 Old 12-09-2014, 02:01 PM
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Originally Posted by Superman2 View Post
Hello Folks!
Been awhile. Just stopped in to say I've ordered a lamp off amazon.ca (clt imports) and will report back my findings in the coming weeks. $155+shipping. Says it's original Phillips/osram bulb with generic housing.

Over 3500hrs on original bulb and it's gotten dimmer (used mostly on normal), so decided to go for it after holding off last year.

Hope this goes well!!!

Will be looking forward to your review, but I believe the actual original lamp is a Ushio. Good luck!


Ed
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post #9257 of 9260 Old 12-09-2014, 04:42 PM
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Will be looking forward to your review, but I believe the actual original lamp is a Ushio. Good luck!


Ed
Great, starting off well already!
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post #9258 of 9260 Old Today, 05:11 PM
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Quote:
Originally Posted by sebberry View Post
The first repair shop wanted to replace the PSU - part not available from VS.
The second shop didn't want to probe the PSU and test it at all.
The third shop pulled some diodes and transistors out of circuit but they all tested OK.
The fourth shop suspects one of the ICs and has a part on order I think and will let me know in a day or two if it can be fixed. If anyone can fix it, this guy can. He's an older Chinese fellow and his shop is stacked to the nines with electronics. I have to turn sideways to walk through the place.

Oh the effort I go to to ensure I have happy customers
Update:

Two ICs replaced on the under-side of the board, but still no power. The technician says he's getting about 1.2v where there should be 5v standby power.

He says without the schematic diagram there's nothing more he can do Of course, the service manual doesn't have the PSU in it.

Viewsonic's help on this has been nonexistent. Last VS projector I buy or recommend for my clients.
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post #9259 of 9260 Old Today, 07:06 PM
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Assuming the 5V PS is putting out 5V, he needs to find what's dragging it down. Suspect a bad capacitor somewhere.

In space, no one can hear you scream . . .
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post #9260 of 9260 Old Today, 07:37 PM
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He's an older Chinese gentleman and I'm having a little difficulty understanding him sometimes. I can see the solder where he's pulled and tested various components out of the circuit.

The nice thing is that he didn't charge me for anything. I think he saw this as a personal challenge

One thing I just discovered is that the service manual that is floating around here lists one of the connectors in the PS as not used. (This is the page he was working from). Taking a look into the projector I see that the door switch (over the bulb) is wired into this connector and it needs a closed circuit. I tried on my projector and sure enough opening the bulb door took the PJ out of standby.

Maybe I'll take it back to him and tell him that connector needs to be shorted. (He did have the other thermostat connector shorted).

On another note, DigiKey shipped the two ICs we needed from Minnesota to the west coast of BC so quickly I had them in less than 24 hrs of ordering them.
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