Question about Mitsubishi VS-50705 50" Rear Projection Television

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Main screen color seems overmodulating. PIP subfeed color fine. White like under black light.

My Mitsubishi VS-50705 had some issues. I created a problem under the VS-40605. But Proton1000 gave me the fix right on by replacing some capacitors around the PIP part of the signal board that connects to the main board. I have the service manual and attempted to adjust using the service menu data the main picture/feed. But I can't get the color to come out correct. The red seems overpowering. The white is like being under a black light. It is overpowering. When the picture starts to fade out in a program to go to another frame the white and colors look better right before the frame changes. Again the PIP picture looks great. Now this set has the split screen. But it won't allow the same feed so the subfeed is black. I switch to the main with 3 little subfeeds scanning channels and they look great. I switch to the main with an adjustable size PIP subfeed and it looks great. I enter service menu adjustment and when I get to the VCJ sub function that brings up the split PIP screen then the subfeed seems fine. Do you think there is still other capacitors in the area I already serviced could still be bad. Or do I need to look into the PIP circuitry to see if the path of the IC is bad? Also any help on focus adjustment would be nice. I don't have a monochrome input so a lot of the service manual adjustments I can't do at this point. LOVE THIS SITE!!!!!

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  • Jeff Thomas Dec 09, 2006

    The PIP portion on my VS7+ chassis is not a little board that connects to the "main board". You are thinking of the other models. Mine has the PIP IC chip built right into the "signal board" So I can't just do the easy "bypass". I've seen this advise twice now.

    Does anybody else have any solutions for the correct board and circuit type?



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Rule number one about all vs chassis with vertical can pip boards take them out and throw them away i could fix one but you couldnt beleive me and it wouldnt be worth your while do a search on your modle number until you come up with instructions on how to add two caps to the pip board connector to bypass it until you do this you are wasting your time Mitsubishi ... we're still building Zeros

Posted on Dec 09, 2006


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SOURCE: Mistubishi VS-50705 can't get color set and white overpowering.

Do you still have this problem?

Posted on Mar 10, 2008

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What I've found is that not all models have a PIP module that is removable. Some of the models have a PIP IC (IC6P01). It's built into the signal board. You can't see it unless you remove the shield cover. There is also a plate cover on the underside of the signal board. It's soldered on. This information will help identify your particular model. I also have a built in PIP circuit. I repaired my set by replacing the following electrolytic capacitors. (C2P02 47mf 35v), (C2P03 100mf 16v), (C2P04 47mf 50v) (C2P05 100mf 16v) and (C2P08 100mf 16v). These capacitors are located on the right side of the signal board, where the signal board connects to the main board. They are located next to heat sinked voltage regulators, one of them being IC2P01 (9v IC regulator). I'm not sure which capacitor was the actual culprit, however it's been said that C2P05 fails a lot in these sets. Anyway, good luck with the repair. proton1000

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