Question about Maxent MX-42HPM20 42 in. Plasma HDTV

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My screen went black but I still have sound. This seems to be a common problem with this tv. Is there a way to fix this.. if so, how much will it cost??

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  • 40 Answers

This panel was most likely made by LG. Most likely cause is a faulty Y-SUS board. If your serial number falls in the range of XXX7F3XXXXX then the part# is 6871QYH053B which is listed at Andrews Electronics for $184.30 with a $50 core charge. It is also possible that when this failure occured that one or both of the Y drive boards were also damaged. However, they only list the upper Y drive.

Posted on Oct 08, 2010

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Posted on Jan 02, 2017

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If the screen is black and stays black, no sign of life at all, you may have one of many tv's with faulty capacitors on the Power Supply Board. Capacitors are responsible for distributing specific amounts of power to a tv's components. That would explain why you have sound but no picture. Most likely, capacitors that send power to the screen have failed.

You have a few options. The first and most obvious is to have it fixed by a pro. The second would be to replace the faulty PSB. The third option would be to replace individual capacitors.

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