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Pete, Electronic Engineer
Category: TV
Satisfied Customers: 17322
Experience:  Over 16 years of experience installing and repairing electronics.
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I HAVE A PROSCAN 55'' TV Model PLED5529A- Stand by indicator

Customer Question

I HAVE A PROSCAN 55'' TV Model PLED5529A-B Stand by indicator light is on but tv will not power up. no picture no sound . was told it is probally the main board ?main board has 2 stickers 1 says PWM other was says SMT120659-1382 have searched and googled this number with no luck at all ? might possibly help if I knew what the pvm stood for ? can anybody Help
Submitted: 1 year ago.
Category: TV
Expert:  Pete replied 1 year ago.

Hi Henry,

Expert:  Pete replied 1 year ago.

PWM just stands for Pulse Width Modulation, a technical term used in some TVs.

Expert:  Pete replied 1 year ago.

You can occasionally get these Main boards on eBay, but they are not readily available.

Customer: replied 1 year ago.
can I make any test to insure that the main board is indeed the problem ?
Expert:  Pete replied 1 year ago.

The only tests that can be done are to either swap it into a known working TV set and test it there, or swap a known good main board into your TV set and check if it resolves the problem.