Question about Vizio P50HDTV10A 50 in. Plasma HDTV

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Video Inputs Not Working AGAIN

The Video 1 and Video 2 inputs on my P50 are no longer working. The S video inputs that are tied to these inputs no loger work either. However all other Component inputs work. Not sure about the HDMI inputs because I don't have anything plugged in there. Could it be that section is bad?? If so where could I get parts/info to make the repairs. I live in a remote area and Service is always a nightmare. This is the second time I've had this exact problem with a Vizio P50. The first time it was under warranty and repair man on the phone said it happend to this model all the time, but it was going to take him 3 weeks to get here so we just returned it to the vendor as defective and purchased a new one,(Bad idea) Now out of warranty what next?

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  • jajames Aug 25, 2008

    After about a year, the Digital HD1 input quit working. I switched to Digital HD2. It worked fine for about a year then it quit working. I have now switched to Analog HD1. It is working but I want to use the HDMI inputs.

    In both cases, the screen showed the "NO SIGNAL" message. When the second HD1 input quit working, I reset the TV via the maintenace menu. This seemed to work for 3-4 hours then it quit working again.

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The video input boards are some what of a nightmare to try and fix and or diagnose.. Lots of memory, video scalers and processors that are next to impossible trace without schematics.

The component working dosent suprise me as everything gets converted to seperate syncs eventually and your past that point. So you can rule out your scalers and processors.

The good news is that this is all low voltage stuff. I would suggest testing the boards voltage regulators, will be 2.5v, 3.3 or 5v. If you find a burnt out reg, the problem is somewhere around that area.. But check ebay as there are tons of people with cracked screens selling there boards for parts.

Posted on Aug 13, 2008

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