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My 50 inch lg plasma tv is flickering with no picture, we were watching it an u heard a click and then flickers with no picture.

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  • marydraiseu May 28, 2011

    I have tried that, changed all nine capacitors but the picture still flickers have you got any other ideas thanks

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Hi
A common problem for these is bad capacitors in the power supply, Remove the back from your Tv and look at the power supply on the left hand side.

You will see roughly around 9 x capacitors that are bulged / domed shaped on top usually these are valued at 3300uf 10V any that have bulged or leaked a brown like substance should be changed.
This will cure the problem as they overheat being sat next to a heatsink that gets very hot!
Try and change them for the same 3300uf but a higher voltage.If otherwise,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.

Take care in solving the problem....

Posted on May 26, 2011

  • Marydraisey May 26, 2011

    Thankyou very much for ur reply were waiting for the capacitors to come then we will try thankyou again we will let you know if it works.

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connect using the aux /rca connectors to cable box.
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some times the flicker you see is not flicker but ac running through the sides of the picture from an ungrounded cable source.
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