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My 42" plasma TV suddenly produces no picture but there is sound

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  • drakemn Sep 19, 2008

    The video goes black but full sound. Happens anytime, just turn on or if been on for some time. Sometimes not at all. I have had someone look at it but was told nothing was wrong. Let me know what you have found out also. drakemn@aim.com

  • cvahle Nov 25, 2008

    Just had the same problem with the 40 inch TV from Samsung. I've seen a lot of similar posts. Had a tech guy come out and he said it was the screen. Just curious what other people have been able to get out of Samsung to resolve this. We are beyond the warranty....



    thanks.

  • Larry May 11, 2010

    need to know more what brand .... model

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Most likely there it's the Y buffer upper and lower and the Y Main board. There is a guy on ebay who will rebuild these three boards for $190. A good way to test if this is the problem is to pull the back off the screen and find the Ybuffers on the far left side. Turn the set up but becareful not to touch anything inside except for the 8 aluminum heatsinks on the board. If after a minute they are hot to the touch (can't keep your finger on them) Then the buffer is bad. There is an actual way to test this with an Ohm meter but so far with these symptoms this is the cause. Do all three boards at once, because the buffer damages the Y main and vise versa.

Posted on Apr 11, 2011

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Samsung model HPR4252X/XAAthanks for any help

Posted on Sep 20, 2008

Same problem hp4260

Posted on Sep 19, 2008

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This sounds like a voltage problem .... I bet it is in a busy circuit ... do oyu have a long extension cord? try to plug it into a different plug far from other electrical use ... or next time it goes black look to see what all you have turned on near it. 2 cures buy a power conditioner (furman) or a battery backup that will manage the voltage.

LegendLB

Posted on Sep 21, 2008

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SOURCE: 42 inch LG Plasma TV - Lost picture

ysus pcb that supplies voltage to the panel is faulty

Posted on Dec 15, 2007

  • 3 Answers

SOURCE: 42 inch LG Plasma TV - Lost picture

Our LG 50" plasma tv screen went black after a popping noise but still had sound, after great diliberations decided to take the back off and have a peek!
We unplugged the tv and tested the fuses (there were three we could see) one had blown, the one on the left as you look at the back of the tv it also has one above it. We wrote the code/seriel number down and took the fuse to the electrical wholesalers Maplin and bought a pack of 10 fuses for £1.29 replaced the fuse in the tv and everything now fine!!!!!!
Hope this might be of use to anyone whose lost the picture after a loud popping/snacking noise but still has sound.

Posted on Jan 17, 2008

  • 7 Answers

SOURCE: Vizio P42HDe Plasma TV - Audio, but no picture

check the backlight inverter and the Y-sus board the one to your left. if those are fine check the bottom right buffer board

Posted on Apr 20, 2009

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Posted on Jan 02, 2017

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