Offical JVC DLA-RS4810 Owners Thread - Page 71 - AVS Forum | Home Theater Discussions And Reviews
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post #2101 of 2113 Old 05-23-2017, 03:55 AM
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Originally Posted by JonFo View Post
I think I'll leave the bulb in for a few more hundred hours with no concerns. Well, other than the 'Lamp replacement' nag that started showing up every time I power up.
Well, not quite, the lamp started to develop a 'flicker' after being powered on for 30 minutes. Going to full bright made that go away, but clearly the bulb was going. So at 3083hrs, I replaced with the spare.
Boy, new one is sure bright! had to re-close the iris and adjust settings. Looks good now.

I hope this bulb lets me ride out the wait until an under $10K laser model comes out (or hit the jackpot and can afford the RS4500K).

Jonathan

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post #2102 of 2113 Old 07-22-2017, 07:54 PM
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My projector had less than 500 hours on it (I rest the lamp, so don't know exactly) when it started flickering. I received a spare bulb when I bought it, so I went ahead and changed it out. The flicker went away (I think), but now is back after being on for about 20 minutes. If I turn motion control off, the flicker is far worse. Is this the lamp, do I need to run it with some bright or high temperature settings, or does it need servicing?
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post #2103 of 2113 Old 09-11-2017, 05:40 PM
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Question Just got the projector and have some questions.

I just got a used RS4810and now, I need to pose my questions here hoping people can hemp out with at least some of them.

The first is that I find the image is quite dim. I think it must be the lamp as it has 2400hrs on it (lamp time). I am looking to get a new lamp and I noticed there are options of buying the bare bulb or together with the housing. Is there any problem in getting the bare bulb and put it in the old housing?

I have also noticed there are cheap third party (Chinese?) bare bulbs or bulb + housing at a fraction of the OEM's price. Has anyone tried these these alternative inexpensive options? Any problem with them?

In the meanwhile, I plan to increase the brightness level. Or is it better to switch to bright mode? Right now, the projector is in Eco mode. When I switch to normal (or bright mode), the picture is quite brighter but the projector is quite louder too. I prefer to increase the brightness in the picture adjustment menu instead of kicking in the fan to high rpm. Any problem with that?

Finally, I plan to do a color calibration of the projector. Is there a not too over-technical online tutorial on how to do this? I have an i1 Display pro color calibrator and I have used it to calibrate my computer monitor which is well very easy since it the software does all the job and save the profile on the computer. However, with the JVC projector I assume I need a third party software which presents different colors and ask me to adjust the extensive color settings in the projector's menu in order to match the standards, right? Which software can do this?

But before I calibrate the projector, can an expert recommend some settings for more accurate color representation. Right now, I feel like some colors are not quite what they must be. Cinema mode seems better but yet, reds/orange/yellow colors seem paled out.

Hope to hear from some people on these questions.

I have to say I am really impressed with the sharpness and contrast of this projector (I am now using an Oppo 103d with Darbee effect too). Compared to my old Sony VPL-VW100, there is so much more punch into the image. However because of the dim image, I feel the shadow details are lost or look too dark.


Last edited by raminolta; 09-12-2017 at 09:14 AM.
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post #2104 of 2113 Old 09-11-2017, 07:09 PM
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Quote:
Originally Posted by raminolta View Post
The first is that I find the image is quite dim. I think it must be the lamp as it has 2400hrs on it (lamp time). I am looking to get a new lamp and I noticed there are options of buying the bare bulb or together with the housing. Is there any problem in getting the bare bulb and put it in the old housing?

I have also noticed there are cheap third party (Chinese?) bare bulbs or bulb + housing at a fraction of the OEM's price. Has anyone tried these these alternative inexpensive options? Any problem with them?
The bare bulbs work like the original ones, but you have to get the correct type (Ushio). Installation is fairly simple - 4 screws that clamp down the lamp, and maybe two screws for the electrical connections. I haven't come across any 3rd party one that work well.

Quote:
In the meanwhile, I plan to increase the brightness level. Or is it better to switch to bright mode? Right now, the projector is in Eco mode. When I switch to normal (or bright mode), the picture is quite brighter but the projector is quite louder too. I prefer to increase the brightness in the picture adjustment menu instead of kicking in the fan to high rpm. Any problem with that?
Have you reset the projector to the factory default?

Increasing the Brightness control will not increase the brightness. Two settings that affect the brightness are:
- Standard vs Super White input range
- The Contrast setting (although you really shouldn't push it beyond 0)
- [EDIT: The Manual Lens Aperture]

I had a 4810 that gets really dim if the 4k mode is turned on. I wasn't able to find out why and turn the 4k mode off.

Quote:
Finally, I plan to do a color calibration of the projector. IS there a not too over-technical online tutorial on how to do this? I have an i1 Display pro color calibrator and I have used it to calibrate my computer monitor which is well very easy since it the software does all the job and save thew profile on the computer. However, with the JVC projector I assume I need a third party software which presents different color and ask me to adjust the extensive color settings in the projector's menu in order to match the standards, right? Which software can do this?
If you already have the i1Display Pro, you can take a look at HCFR.

JVC DLA-RS400
HCFR v3.4.x Bug List

Last edited by Dominic Chan; 09-12-2017 at 06:17 AM.
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post #2105 of 2113 Old 09-12-2017, 06:00 AM
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Quote:
Originally Posted by Dominic Chan View Post
The bare bulbs work like the original ones, but you have to get the correct type (Ushio). I haven't come across any 3rd party one that work well.


Have you reset the projector to the factory default?

Increasing the Brightness control will not increase the brightness. Two settings that affect the brightness are:
- Standard vs Super White input range
- The Contrast setting (although you really shouldn't push it beyond 0)

I had a 4810 that gets really dim if the 4k mode is turned on. I wasn't able to find out why and turn the 4k mode off.


If you already have the i1Display Pro, you can take a look at HCFR.
Hmmm. Not sure about the advice to avoid pushing contrast above zero. My 4810 was professionally calibrated after 100 hours with a new bulb and contrast was set at +14. Even at that, there's still a lot of range.

Check the Aperture setting. The 4810 isn't a light cannon, so working with the Lens Aperture and Contrast may result in a brighter looking picture. Some people love to close the aperture way down, but right now you'll probably want to set Lens Aperture between 7 & 4, maybe even 3 if it's really dim. This is only a short-term fix, IMHO. The bulb is ready to be retired. Most people selling bulbs are selling them with the housing. If you want to be sure you are getting an OEM bulb, contact the folks at AVS and buy from them. They run between $200-$300. You can buy one for less, but look for the "genuine JVC" label on the box. When you put in the new bulb, wait for the 100 hour burn in, then calibrate.

Good Viewing,John G  JVC DLA-RS4810 Projector, Vutec 110" (16x9) Bright White Screen, Oppo UDP-203 disc player, Darbee Darblet, Onkyo TX-NR708 Receiver/Processor, Toshiba 1250 NTSC-PAL Region Free BR Player, 7 Paradigm Reference spkrs w Dual Subs,  Adcom & Yamaha Amps
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post #2106 of 2113 Old 09-12-2017, 06:19 AM
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Quote:
Originally Posted by johng View Post
Hmmm. Not sure about the advice to avoid pushing contrast above zero. My 4810 was professionally calibrated after 100 hours with a new bulb and contrast was set at +14. Even at that, there's still a lot of range.
Are you using the Standard or Super White setting?

JVC DLA-RS400
HCFR v3.4.x Bug List
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post #2107 of 2113 Old 09-12-2017, 06:43 AM
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Quote:
Originally Posted by Dominic Chan View Post
The bare bulbs work like the original ones, but you have to get the correct type (Ushio). Installation is fairly simple - 4 screws that clamp down the lamp, and maybe two screws for the electrical connections. I haven't come across any 3rd party one that work well.


Have you reset the projector to the factory default?

Increasing the Brightness control will not increase the brightness. Two settings that affect the brightness are:
- Standard vs Super White input range
- The Contrast setting (although you really shouldn't push it beyond 0)
- [EDIT: The Manual Lens Aperture]

I had a 4810 that gets really dim if the 4k mode is turned on. I wasn't able to find out why and turn the 4k mode off.


If you already have the i1Display Pro, you can take a look at HCFR.
Quote:
Originally Posted by Dominic Chan View Post
Are you using the Standard or Super White setting?

Standard. The 4K mode looks good, and I don't notice dimming. If you use 3D content, that's when things get really dim...until you engage the 3D mode. That kicks it into High Power mode with increased fan noise, but not too objectionable.

Good Viewing,John G  JVC DLA-RS4810 Projector, Vutec 110" (16x9) Bright White Screen, Oppo UDP-203 disc player, Darbee Darblet, Onkyo TX-NR708 Receiver/Processor, Toshiba 1250 NTSC-PAL Region Free BR Player, 7 Paradigm Reference spkrs w Dual Subs,  Adcom & Yamaha Amps
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post #2108 of 2113 Old 09-12-2017, 08:15 PM
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Quote:
Originally Posted by johng View Post
Hmmm. Not sure about the advice to avoid pushing contrast above zero. My 4810 was professionally calibrated after 100 hours with a new bulb and contrast was set at +14. Even at that, there's still a lot of range.
I've just made some measurements on my RS400. Even with just a modest push in Contrast (+2), there is significant clipping beyond 90%, and the luminance at 100% does not go up with Contrast control. See attached graph where the dotted line is for Contrast 0 and solid line for Contrast +2.
All the JVC projectors I've had behave similarly (X35, RS4810, RS4910, RS400); i.e., there is no "reserve headroom". Many users are actually setting the contrast to -1 or -2 to further improve the linearity.
YMMV.
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JVC DLA-RS400
HCFR v3.4.x Bug List

Last edited by Dominic Chan; 09-13-2017 at 06:41 AM.
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post #2109 of 2113 Old 09-13-2017, 05:42 PM
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Arrow

Thanks for the information. I hadn't reset the projector though I went through all the settings and set them all to the default values (or zero). I will reset the projector next time. I wouldn't want to turn off the 4k mode (I assume this is the e-shift which can only be turned off through service menu, right?) since this is a main reason I bought this projector (until native 4k projectors become affordable). Otherwise, I could have had an older JVC model for much less.


I have installed the HFCR. Hopefully, it's not too complicated (JVC numerous color settings are already over-whelming, lol).

Quote:
Originally Posted by Dominic Chan View Post
The bare bulbs work like the original ones, but you have to get the correct type (Ushio). Installation is fairly simple - 4 screws that clamp down the lamp, and maybe two screws for the electrical connections. I haven't come across any 3rd party one that work well.


Have you reset the projector to the factory default?

Increasing the Brightness control will not increase the brightness. Two settings that affect the brightness are:
- Standard vs Super White input range
- The Contrast setting (although you really shouldn't push it beyond 0)
- [EDIT: The Manual Lens Aperture]

I had a 4810 that gets really dim if the 4k mode is turned on. I wasn't able to find out why and turn the 4k mode off.


If you already have the i1Display Pro, you can take a look at HCFR.

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post #2110 of 2113 Old 09-13-2017, 05:49 PM
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Quote:
Originally Posted by raminolta View Post
I wouldn't want to turn off the 4k mode (I assume this is the e-shift which can only be turned off through service menu, right?) since this is a main reason I bought this projector.
I wasn't suggesting you run your projector with 4k turned off; that was only for trouble-shooting based on the one I had.

Also, turning on eShift should not cause the dimness, but mine did.

JVC DLA-RS400
HCFR v3.4.x Bug List

Last edited by Dominic Chan; 09-13-2017 at 06:45 PM.
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post #2111 of 2113 Old 09-13-2017, 06:38 PM
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Quote:
Originally Posted by raminolta View Post
Thanks for the information. I hadn't reset the projector though I went through all the settings and set them all to the default values (or zero). I will reset the projector next time. I wouldn't want to turn off the 4k mode (I assume this is the e-shift which can only be turned off through service menu, right?) since this is a main reason I bought this projector (until native 4k projectors become affordable). Otherwise, I could have had an older JVC model for much less.


I have installed the HFCR. Hopefully, it's not too complicated (JVC numerous color settings are already over-whelming, lol).
Turning MPC (i.e. "4K eshift") off, on, or varying degrees is a simple adjustment in the "Advanced" tab of the picture controls menu, or "MPC" on the remote control.

Good Viewing,John G  JVC DLA-RS4810 Projector, Vutec 110" (16x9) Bright White Screen, Oppo UDP-203 disc player, Darbee Darblet, Onkyo TX-NR708 Receiver/Processor, Toshiba 1250 NTSC-PAL Region Free BR Player, 7 Paradigm Reference spkrs w Dual Subs,  Adcom & Yamaha Amps
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post #2112 of 2113 Old 09-19-2017, 04:05 PM
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Question

Quote:
Originally Posted by johng View Post
Turning MPC (i.e. "4K e-shift") off, on, or varying degrees is a simple adjustment in the "Advanced" tab of the picture controls menu, or "MPC" on the remote control.
That helped; thanks otherwise I would have kept looking for e-shift term elsewhere.

To everyone: may I know know what your preferred e-shift mode and settings are?

So far, I find all modes except the 'film' one being overcooked and not to my preference. They all look like an over-sharpened image far from natural. The film mode looks natural to me though. While turning it one and off make a subtle difference in enhancing the details (in film mode), I am not sure if I notice much of a difference by increasing the enhance level to the maximum. I need to look more into this. My sitting distance is about 1.5:1 (screen width).


Last edited by raminolta; 09-19-2017 at 04:17 PM.
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post #2113 of 2113 Old 10-12-2017, 12:55 AM
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I bought a used X55 w/i lamp hour over 1400hrs. Which is dim on normal lamp power then I turn to high .
After several time calibrations , finally got a good result of this projector.
The calibration tool is colormunki photo w/i HCFR.
Color profile use animation which green is closet to color gamut target.
Shoot two Gamma target for 2.2 and 2.4,after compare I'd prefer 2.4 is good for black level in my room.
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Last edited by Edward Chen; 10-14-2017 at 07:21 AM.
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