Official Vizio P50HD Thread ( part 2): NO PRICING: Technical Issues ONLY! - Page 149

Replacing parts on printed circuit boards that you want to work properly when done, is not the best way to go when you are also to trying to learn how to solder. Might be a good idea to find some kind of junk printed circuit boards, to practice removing and replacing parts on first. Unsolder some parts on them, and then solder them back on. Either that, or pay someone you may know that is experienced at soldering parts on circuit boards to do it for you.

Replacing the big can electrolytic caps is just about the easiest work that can be done on the circuit board. IMO not out of the capabilites of a beginner even with the most basic soldering iron as they arent too terribly sensitive to heat in comparison to other components. Ceramic and other types are a different story though.

Solder braid would work, though is best used to remove/clean old solder after the component is removed. I would use even a cheap solder pump(vac) rather than braid by itself. If the pads are corroded from leaking electrolyte, clean them up with a toothbrush and iso alcohol. Make sure your caps are being replaced at the same polarity, use a clean, sponged and tinned solder tip, rosin core solder or separate flux.

As per the above post advice it would be a good idea to practice desolder / solder on and old pcb if possible.

Im just a tinkerer, not an expert so keep that in mind if you use my advice.

The bad news is that for all those caps to fail it would seem likely that there is some other component with a short causing the problem. Caps are cheap so I'd probably replace them with hope, however stand clear when powering keeping safety in mind as they could fail again violently spreading corrosive electrolyte.

** I dont know what other's situations were with bad capacitors on the PS board (that you referred to) and if replacing them fixed the problem or not, but after seeing your picture of the AC supply combined with the large number of swelled caps, I'd be REALLY be leaning towards the opinion that is just the byproduct of a different problem. Again, however, caps are cheap so its worth a shot.

My p50 just got the POD. I bought mine from Costco back in late 2005. I went to the original place of purchase since I should be "covered" under the old policy and the store manager was unwilling to offer anything except whatever justified excuses to cover his back; a simpleton. I contacted another Costco and talked to the supervisor and he was readily to accept the defect TV as long as there's a problem with it. I bought in the TV (no box) and told the return lady that the supervisor confirmed the return and 10 mins later, I got back about 3k in cash.

It sucks that this P50 has such a defect but I am glad based from reading the comments that Vizio is willing to help fix the problem. I hope everyone that has this defect has good available options to choose from in dealing with this issue.

i've got a JV50P model that has died. i've read as many posts as i can and it appears this is a troublesome model. i don't think i had the PoD. It was fine one day and then not the next. It will power up and the "vizio" turns white like usual. when it tries to access a signal the "vizio" starts to blink or pulsate. it stays white and never turn back amber. i can call up the menu, change inputs, etc, just keeps saying no signal.

i tried to unplug it and hold the power button for 30sec but no luck.

1. am i in the right thread?
2. if so, any ideas before i dig into it and start playing with the voltmeter?

The HDM50 that we talk about here was a very early model plasma display and didn't even have a tuner. The JV50 was a generation or 2 later and probably doesn't suffer the same problems as the HDM50.

Does your set proclaim "no signal" when you have it connected to a video source like a DVD player or does it only do so when you're trying to receive a signal directly from an antenna or cable source (without a separate cable box)? If the problem occurs with all sources, then the problem is probably with the input board. If it only does so for TV stations, then it's the tuner.

I'd check with Vizio and see if they have authorized repair in your area. They might fix it for a reasonable price, or you might be able to replace the affected board yourself. Just remember, a 50" 720p plasma like the JV50 only costs about $600 now.

thanks for the reply. i pulled the cover last night and all the capacitors looked ok to the naked eye. i pulled out the voltmeter and figured i'd work my way around looking for anything suspicious. with the power on and the meter set to Volts AC, i tested the first wires coming off the power cord just off a little box that states it is a noise suppressor. i got a spark and heard a pop. not sure what i did wrong. should i be testing all power internally DC? i figured, that close to the power cord was AC.

to answer your question, it says no signal in every mode except tuner which just gives a blank screen.

thanks.

You need to be VERY careful poking around inside of a Television set. Unlike other electronics there's things that could potentially kill you inside and you're not too far from them with what you're working on.

agreed, thats why i stopped. but shouldn't i be able to test each board for power?

My daughter fell asleep with the Netflix login over night. I now how red burn in on my screen. I have had my PD50HD for 5 years and I haven't had any problems. I ran the screen image cleaner and it helped, but after a few days it comes back. Does anyone have any suggestions?

This works well for me:

http://www.avsforum.com/avs-vb/showt...81#post6230381

Styln

I have a VP50HDTV20A that powers on, speakers click, and no picture. I opened it up and see a green led on the power board that blinks 3 times. Anyone know what that code indicates? I've called Vizio and they will not answer any technical questions and I looked at a service manual but I can't figure it out. Thanks!

My tv turned off and now there is no picture or sound but the light turns from amber to green and i hear 2 clicks there is a occassional splotch of white after i turn it on but thats it any help would be greatly appreciated?