dlp fuzzy picture down the center

[troyhq]

I have a Mitsubishi wd-65731 that has a fuzzy or blurred picture down the center of the screen. The problem is slowly spreading twords the edges. It occurs all the time it doesn't matter if viewing videos, watching tv, or playing games. Any help is greatly appreciated.

[Evil Lurker]

Re: dlp fuzzy picture down the center

I got one of these sets someone junked and I'm getting ready to give it a thorough overhaul. From what I understand, these things eat expensive metal halide light bulbs and the color engine likes to go kaput. Try using the search engine... there is a whole big long thread on this one particular model.

[PlainBill]

Re: dlp fuzzy picture down the center

I have a Mitsubishi wd-65731 that has a fuzzy or blurred picture down the center of the screen. The problem is slowly spreading twords the edges. It occurs all the time it doesn't matter if viewing videos, watching tv, or playing games. Any help is greatly appreciated.

Here is an extensive thread with pictures. The problem is a coating has accumulated on the lens of the optical engine. The fix involves pulling the optical engine and cleaning the lenses. There is also a mirror or two behind the screen that should be cleaned. The improvement will be astounding.

PlainBill

[bigdozer]

Re: dlp fuzzy picture down the center

I had a tiny bug get into my old jvc 61" dlp. Landed right in the middle of the lens. It looked huge on the screen. I took the screen of and cleaned it and it looked brand new. Make sure there are no smudges, dust or lint left when you clean the mirrors and lens or it will look like crap. So far with my mitsubishi 60 wd735 ive only had to clean the fans and heat sinks on the back of the light engine. It was getting hot and turning off by itself.

[troyhq]

Re: dlp fuzzy picture down the center

I tore the whole thing apart and cleaned it really good and put it back together. It is better but not good I cleaned it with a dry lent free cloth. (the light engine and bulb). I'm thinking of trying it again with some kind of wet lens cloth. Other than that the light engine may need replaced unless I can come up with another idea.

[PlainBill]

Re: dlp fuzzy picture down the center

I tore the whole thing apart and cleaned it really good and put it back together. It is better but not good I cleaned it with a dry lent free cloth. (the light engine and bulb). I'm thinking of trying it again with some kind of wet lens cloth. Other than that the light engine may need replaced unless I can come up with another idea.

Did you clean the lens inside the light engine? That's where the majority of the crud accumulates.

PlainBill

[troyhq]

Re: dlp fuzzy picture down the center

yes.

[cashkennedy]

Re: dlp fuzzy picture down the center

The way he described the problem made it sound like its a perfectly straight gradient starting in the middle. I doubt a crud / dirt build up would be perfectly consistent. So perhaps his problem is something else.

I dont understand a whole lot about DLP's so the following is just a totaly made up explanation for how you might get a even blur in the center ... You have a bad voltage source that is drooping in the middle of the dlp chip with the mirrors and so either the mirrors arent getting enough voltage to stay angled properly so are casting the image in crazy places or the default state is for the mirrors to cast all light towards the screen and so you dont have enough voltage to get the mirrors to move at all in the center and all colors get send out in the center causing a white light in the center of the screen.

Or you could have a bad fan, and the dlp chip is getting too hot and warping, but id assume they would have thought about this possibility and made the tv turn off from being too hot.

Again this is a totaly made up explanation, but then again who really understands DLP? But perhaps you can describe if its a almost perfectly even gradient of blur, and is the blur a white overbright section, or is it just overlap of colors, or a dark blur area in the center. Crud on the lenses should be uneven and be a dark blur id assume.

[Village Electronics]

Re: dlp fuzzy picture down the center

I have a Mitsubishi wd-65731 that has a fuzzy or blurred picture down the center of the screen. The problem is slowly spreading twords the edges. It occurs all the time it doesn't matter if viewing videos, watching tv, or playing games. Any help is greatly appreciated.

Almost all picture problems are related to the optical engine on Mitsubishi DLP. Some models will show improvement with cleaning and some merely have an obstruction on the lens.

A picture speaks a thousand words.