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I have sound but no picture. I found on your sight that it may be the Y or Z Sustain board??? Is this right?? Thanks

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It could be anything try giving the model number of the tv and also if the led is flashing what is the sequence and if they are fast or slow flashes

Posted on Mar 15, 2011

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There is no picture on my tv the sound is ok and the amblights works how can I see the picture on screen


Hello,

Problem is in either power supply or the Y-Sustain board.

The Y-Sustain is a relatively large board out of which go connections to the side of the display; it's therefore closer to either the left or the right side of the display, has at least one rather large heat sink on it and fat power cables connecting it to the main power supply.

Often there are fuses on that board - one or more. Check those.

if they are blown you can try to replace them, but expect them to blow again - usually the whole board needs to be replaced.

Good in luck and Thanks...

May 14, 2011 | Televison & Video

1 Answer

I have a technica lcd42-207.it hasn't picture but the sound is ok.


Hello,
Problem is in either power supply or the Y-Sustain board.but the Y- sustain board is more likely the cause of the the television sound okay but picture isn't

The Y-Sustain is a relatively large board out of which go connections to the side of the display; it's therefore closer to either the left or the right side of the display, has at least one rather large heat sink on it and fat power cables connecting it to the main power supply.

Often there are fuses on that board - one or more. Check those.

if they are blown you can try to replace them, but expect them to blow again - usually the whole board needs to be replaced.


Jul 30, 2010 | Televison & Video

1 Answer

I have a sony kv-30hs420 turn on and no picture but have sound plus red blinking lite on front panel. thanks for any help!


Hello,
you have to open the back cover of the television to check for dry soldering, if found any resolder, but if otherwise,
Problem is in either power supply or the Y-Sustain board.

The Y-Sustain is a relatively large board out of which go connections to the side of the display; it's therefore closer to either the left or the right side of the display, has at least one rather large heat sink on it and fat power cables connecting it to the main power supply.

Often there are fuses on that board - one or more. Check those.

if they are blown you can try to replace them, but expect them to blow again - usually the whole board needs to be replaced.

Good luck

Jul 30, 2010 | Panasonic Viera TH-50PX80U Plasma TV

1 Answer

LG PDP42X3 No Picture - I have sound and blue power button in front but no picture. How do I tell if the ceramic fuse is blown? They are all still pure white. If they are not blown, does that help with...


This condition, sound no picture, is generally a result from a failed y-sustain and/or x-sustain board. You can check the fuse for continuity or resistance using a multimeter. I am helping someone repair their LG 42pc3d, that's why I thought I'd help you out too.

Y sustain board 6871QYH053B
Z sustain board 6871QZH056B

Jan 09, 2010 | LG 42PC3D 42 in. Plasma Television

1 Answer

What happens when your plasma goes pop but there is sound and no picture


The pop you heard was probably the Y-sustain board. The "sound, but no picture" problem is common for plasma tv's. I fixed mine buy replacing both the Y-sustain board and the Z-sustain board. You can find both boards on ebay for around a total of $150.

Nov 12, 2009 | Hitachi 42EDT41 42 in. HD-Ready Plasma...

1 Answer

LG plasma have an amber light when turning on then green then red


After all the research I found out that the IC on the Z board is bad and new board was ordered and replaced. The plasma work fine after that and picture is excellent with the new board. This forum is great, without this I couldn't fix it myself. Thank you.

Sep 30, 2009 | Zenith P42W46X 42 in. Plasma EDTV

1 Answer

42 inch DO42746 no picture or sound


It is still possible the z sustain board is bad. or an x driver board.

Jun 26, 2009 | Sanyo DP42746 42 in. Plasma Television

1 Answer

With no picture but only sound on my Akai PDP 4294


Try replacing the Y-sustain board. Might have to replace buffers attached to it too. Have you had it diagnosed? My picture went out and I replaced the power supply board. Worked for 2 weeks then acted up again. Got a different power supply board. Same thing 2 weeks later. Was told it now was a bad Y-sustain board. Replaced y-sustain board. Worked OK for about 2 hours then started having picture issues. Not the same issues before power supply or y-sustain problem. Was told that you might have to replace buffers attached to y-sustain when you replace y-sustain. Tired of dealing with it and only watch a couple hours a day, so I don't always have the problem unless I watch the TV for a long time. Will eventually replace buffers to see if that works. I would definitely find a place that gives free estimates or close to free to get a technician diagnosis. Then you can decide if you are able to do the work yourself.

Jun 06, 2009 | Akai PDP4294 42 in. EDTV-Ready Plasma...

1 Answer

50lg 50px5d plasma green light goes on, but no sound or picture


Your friend is probably right. It will either be the Y-sustain brd or the Z-sustain brd. I have seen both bad at one time or another, The part numbers are on the boards.

Dec 08, 2008 | LG 50PX5D 50 in. Plasma HDTV

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