We were watching TV last night with it made a click sound, just as it does as it turns on and off, however we lost the picture and can not get it back. We have the sound, but no picture at all, not even a blue screen. Does this spell the end of our TV? Is there something that can be can? Thank you
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Re: No Picture on Magnavox 42" Plasma TV
Plasma displays use a fairly high voltage and the supply for it has failed.
If you want to check on your own, remove the back panel and look for one or two boards with far fewer and larger than average components on it or them.
If two boards are present, the one most obviously related to the incoming AC cord will be the main supply but in some sets, the main and HV supplies may share a board.
Locate the part # and email the manufacturer for a price on repair or replacement.
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Hi it sounds like it has had an elctric fault like a resistor failing. The click you heard would be a internal switch that cuts off the elctric supply to the screen to stop furthe damage hapening. It could even be something simple like a bad solder and in that case will need locating and resoldering. How old is the telly and how often is it used. When you switch it off leave it off for about an hour then try again if you have allready done this then it probably is a blown resistor are you sure nothing has been pressed on controll have you tried seeing if you can acess the menu screen via the remote and see if that comes up on the screen let me know ok
Sounds like a capacitor blew on one of the boards. Can you detect any burnt electronic smell? If the Cap blew on the Power Supply, you can either replace the Capacitor or replace the power supply board. The boards are between $79 and $149 depending where you get it. Some of the other boards, Y or Z Sus, are between $179 and $300. If you can't do it yourself, and with many 42" models selling for $649 to $899, it might be too expensive to fix.
You can find the boards on ebay or shopjimmy, youtube has videos showing how to replace them. Hope that helps.
Most likely what happened is one of the capacitors went bad. When a capacitors goes bad it produces a popping sound. This could be an easy and cheap fix if you find the bad capacitor or capacitors. The bad capacitor will have a bulging top most likely on the power board but could be anywhere.
Hi , I recently had the same problem which I was determined to fix . So I did a few weeks of research to find that it was the Y SUS board which burns out. I'm sure you realized that the TV gets hot. Personally I think this is why. circuit boards don't like heat and I've learned that the cooling fans are a joke. I replaced the board and got my picture back. I proved the fan theory because after the screen started to act up. I placed a cooling fan near the vent holes on top and the problem cleared right up,It also helps if you lower the brightness which helps out on the heat situation.I will soon be adding a fan with a temp. sensor. This shoud help if your screen has lines when you initially turn the cool TV on.then I have Some other costless solutions. Hope this helped these are great TV's and like our cars we maintain them not throw them away..................................Mr Wiseman