Question about Toshiba 57H81 57" Rear Projection Television

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Blank Screen I have power, sound but no picture

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Welcome to Fixya! You need a new HV transformer. Usually you can just buy the transformer itself. It's a little black tower on the backside of the tv. If it's not that, it's the convergence ic's. There's two of them, given it's a toshiba, the part number is more than likely stk392-110. Please Rate My Response! Thanks!

Posted on Jan 30, 2009

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There is a fuse on the main power board which may have blown. you need to check your schematic manual which will usually be located somewhere on the rear of the TV,for the exact location in your case.
Be very careful when operating near these electrical components because even if the TV is unplugged it can give you a nasty shock from stored voltage.

Posted on Jan 30, 2009

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Hi and welcome to Fixya,

In most instances, there would be a blinking LED light. The sequence and number of blinks actually represent a particular error code. With the number/sequence known, then what section or general area to begin the diagnosis would be pointed.

Pls post back number/sequence of blinks. Further, pls confirm if you are considering a DIY (do-it-yourself) amd stage of familiarity with electronic components & circuitry use and availability of a DVM/VOM and a soldering iron.

Good luck and thank you for using FixYa.

Posted on Jan 30, 2009

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Please check CRT Guns at rear of TV heater glows at base ?
This will confirm that Horizontal section is working and problem is in hyper board of TV.
Let me know results to help you further.
Thanks.

Posted on Jan 30, 2009

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I think you'll need to buy a new picture engine, since rear projections degrade over time. Call support and they'll diagnose it for sure and sell you a new picture engine. I estimate it'll cost about $75. I hope this helps. Please rate my solution.

Posted on Jan 30, 2009

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