Jvc RS35 and similar models cleaning - AVS Forum | Home Theater Discussions And Reviews
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post #1 of 6 Old 02-11-2020, 09:30 AM - Thread Starter
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Jvc RS35 and similar models cleaning

Hi everyone I would like to ask you for a help about how to clean the lamp and prisms of the old 35 and similar RS/HD models to get some more brightness. I was reading about that in an old discussion but I am not able to retrieve it anymore. I would really appreciate if you could guide me to the right procedure. Thank you very much.
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post #2 of 6 Old 02-11-2020, 09:44 AM
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The thread showing cleaning might still be there, I saw it a few weeks ago, but cannot find it at the moment. However, a Google search for "JVC projector clean mirror" might be a good start.

Here is a snippet from another thread

"In order to get to the inner bits (without breaking anything!) you need to fully remove the optical block. You then need to take the grounding tape off so you can get the drive circuit boards off the optical block, only then can you get to a long piece of screwed on plastic cover that allows you to get to where I got. I still wonder whether I should clean the D-ILA chips. No specialist tools are required however to get to the 3 screws holding the optical block in you need a long no2 philips screwdriver, I ended up buying a 250mm one as I could get to it easily."

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post #3 of 6 Old 02-11-2020, 09:50 AM
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Quote:
Originally Posted by jimmyp1974 View Post
Hi everyone I would like to ask you for a help about how to clean the lamp and prisms of the old 35 and similar RS/HD models to get some more brightness. I was reading about that in an old discussion but I am not able to retrieve it anymore. I would really appreciate if you could guide me to the right procedure. Thank you very much.
here is a photo of my old RS55. the lamps were known to overheat a bit in these causing gassing of the plastic material which would leave a residue on the front prism lens. This wasn't an issue any more starting with the RS46/X35 and newer models.

unless the glass elements are very dirty, you won't likely gain back any noticeable brightness. I measured this projector before I cleaned it and after and there was no change in measured brightness.



you can use these to safely clean the glass.

https://www.amazon.com/PEC-PAD-Lint-...dp/B0001M6K24/
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post #4 of 6 Old 02-11-2020, 10:05 AM - Thread Starter
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Thank you very much. I am a little scared about to remove the optical block! I think it’s beyond my ability ! I hoped it could be a little easier 😞
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post #5 of 6 Old Yesterday, 05:36 PM
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Quote:
Originally Posted by jimmyp1974 View Post
Thank you very much. I am a little scared about to remove the optical block! I think it’s beyond my ability ! I hoped it could be a little easier 😞
The procedure to clean the lens near the lamp as mentioned by @zombie10k is fairly simple. Going inside the optical block all the way to the prism is a whole different story, and I wouldn't do it unless the projector was VERY dusty inside. JVC projectors never had very good air filtering (has this changed on those huge models from 2019?...), but dust rarely gets on the LCoS panels and the prism, and I think that if either had dust it would actually be visible on dark scenes. The series of mirrors that sit before can get a little more dusty. I've opened the optical block of an RS20, but not all the way to the prism, and I don't recommend doing it, because you'll have to disassemble a lot more than the optical block. My suggestion is always this: remove the plastic and the metal covers of the projector and, if you don't see much dust in there, it means there's probably not much dust inside the optical block either. I've noticed here on the forums you've been struggling a bit with these older models, and I don't think that this tiresome and delicate task of cleaning the optical block will give you the brightness you wish to obtain. I really suggest you sell that RS35 and try to get what's usually recommended around here: at least an RS49.

4,3 x 2,8m semi-blacked out media room | 2010 MacMini > Pioneer VSX-520-K > JVC RS50 (X7) > 107", 1.1 gain, white screen | JVC X30 (RS45)
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post #6 of 6 Old Today, 04:28 AM - Thread Starter
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Thank you very much. I will try to sell both my 35 and 25 and switch to a newer model. Although after seeing a4910 I still prefer the 35 as to 1080p playback. Maybe it’s only my taste. I will try some even newer models.
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