My parents have a WD52527 and the picture has gotten darker over time. They are relatively heavy smokers and that's likely the problem. We've cleaned the mirror and the lens (the one immediately before the mirror) several times and it helps but the picture has gotten progressively darker. A new bulb didn't make a difference.
Does anyone know if the light engine is sealed to prevent smoke from entering?
If it's not sealed, its optics are probably coated with smoke. Does anyone know if it's possible to disassemble and clean the lenses, mirrors and LCD panels?
Is the light engine available as a replacement part? I haven't been able to find it on the net. The part number is: 938P015010
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Re: Optical Engine in a Mits WD-52527
You have to be careful when replacing the projection bulb assembly. Don't aways look for the cheapest as they are rip-offs that do not last long and are not as bright. Dont buy OEM "compatible" only OEM originals. Call Mits Customer Service for advice
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Clean the small mirror in front that projects the image onto the rear mirror. The Rear mirror always stays good but the front small mirror gets dusty and the colors and bright levels get affected and appear dim.
There is only one lamp need. If you keep your user's manual refer to ...how to replace the lamp. (I recommend to use an original mitsubishi lamp) process is kind or smooth path to the user, But if you are not feeling comfortable replacing it a serviceman can give you an estimate on it.
This is a common fault on these sets. The problem is the format board (takes all the stuff you send in via the input connectors and translates it into stuff the TV can actually display) has crappy capacitors that fail after a few years. The solution is to have the chassis rebuilt either by a very competent servicer or have them ship it off to Mitsubishi for rebuild (6-8 weeks). Your local Mits servicer can handle the shipping back and forth as Mits will provide them a special shipping container. It's also fairly difficult to remove and reinstall the chassis.
Sorry, I have no idea about what this might cost. Mine was rebuilt under an extended warranty. I doubt that it's cheap, though.
those are going to be dust spots on the LCD panels internal to the optical engine. i suggest that you take the screen off and take off the panel i nthe middle of the tv with 2 screws in it and there will be an area that has 3 metal fins covering thin orange ribbon cables. the 3 square objects at the end of those ribbon cables will be the LCD panels spray wiht air compressor unitl clean and that should greatly help your problem.
I finally broke down and took it to the shop. They said they think I had some loose connections internal to the engine. They reset all the the connections and resoldered the joints. Seems to be woking okay so far. The fix cost me $310.