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Rod
Rod, TV & Communications Sys Repair
Category: TV
Satisfied Customers: 4501
Experience:  FCC Commercial License, Previous owner of Electronics Repair shop, 40+ years in electronic systems.
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My plasma tv has sound but no picture. Is this fixable? Is

Customer Question

My plasma tv has sound but no picture. Is this fixable? Is there a bulb that needs to be replaced?
Submitted: 5 years ago.
Category: TV
Expert:  Rod replied 5 years ago.
Hi,

What is the complete model number of the TV? There will be a tag on the back with the model number.

Thanks,
Rod
Customer: replied 5 years ago.
PN58B550T2F
Expert:  Rod replied 5 years ago.
Hi,

I do not have the service manual for your specific model, but it can be repaired. The most common problem with Plasma TVs, from the symptoms you have, is one of the Y-boards has failed. There are three Y-boards, two Y-driver boards (an upper and lower) and the Y-sustain board, which provides signal and control to the Y-driver boards.

The Y-boards are what provides the horizontal signal and high voltage to the Plasma display. Normally one of the Y-drivers fails and will shut down the entire high voltage circuit. The board is replaced. A replacement board runs about $125, plus labor for repair. It is possible the Y-sustain has failed, they are a little more to replace (about $250), plus labor.

The TV will need to be diagnosed to determine which has failed, and the power supply for the Vs and Va voltages should be checked.

A service estimate will run about $100-$125, depending on your location. The estimate charge will apply towards labor for repairs, should you decide to have it repaired.

Thanks,
Rod
Rod and 2 other TV Specialists are ready to help you
Customer: replied 5 years ago.
Will i be able to purchase the parts myself and do it myself?
Expert:  Rod replied 5 years ago.
Hi,

You will will need some test equipment to isolate the board. And check the voltage on the power supply - do you have a digital VOM?

Thanks,
Rod