Question about Mitsubishi VS-45607 45" Rear Projection Television

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Intermittent vertical jitter.

I found this site looking for tips on my VS-50705 Mitsubishi Projection. It has similiar issue as a promblen submitted by Proton1000. He tried resoldereding in the IC-451 but nothing fixed. Quazar posted solution that the PIP was the issue and suggested c7001 and c7036 but if they leaked too much the board dead. Cure elimintate PIP by putting 10 mfd 50v cap from pin 5 to 11 and another from pin 9 to 7 on the VP plug under the main PCB. I can't find c7001 or c7036. I have a c7a01. Maybe due to the different models? And I can't find the VP plug on the main PCB? I have "wire plug ins" with other letters but not that. The only one with 11 connectors is DM. ??? I got another suggestion from the web. It was that they had to resolder some connections in the PCB signal area with the convergence circuit? Or low voltage B+ but I have not been able to get a definition on B+ means? I have a service manual on CD but not sure if it is a complete copy and that is where I've been referencing along with looking at the boards. I have the complete box out and signal PCB out so I guess the only way to test any fixes for this type issue without having test equipment is to reassmble and look?

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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

Posted on Nov 18, 2006

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Start up problem


Bill;

Cause 1
1. VERTICAL ROLLING, VERTICAL BLANKING BAR LOCKING IN THE MIDDLE OF THE PICTURE, ALSO MAY HAVE HORIZONTAL PULLING OR TEARING. CHECK C2C52 10 UFD @ 50 V OFF THE BASE OF Q2C51 ON THE SIGNAL PCB.

2. CHECK C2P05 100 UFD 16 V OFF PIN 3 OF IC2P01 AND IC2P01 PART # 270P466020 (9-VOLT REGULATOR). BOTH ARE ON THE SIGNAL PCB.
Replace all these if they look bad or not. If you can't do it yourself call a service Company and get an estimate, it should cost about $450 if they know what they are doing.
Thanks using FixYa, Big Irish.

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