Question about Toshiba 42HP84 42 in. Plasma HDTV

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Vertical Flashing Lines on Toshiba 42HP84 Plasma 42"

I acquired a Toshiba 42HP84 plasma TV in need of repair. When powering on the TV it produces a row of flashing vertical lines (red / orange / yellow in color against a redish/orange background). A white jagged horzontal line in the middle of the screen also is displayed with the vertical lines. This appears (on/off) at approximately 1 second intervals -- non-stop.

I took the TV to an authorized Toshiba repair shop -- obtained an estimate but declined the service based on the repair cost they quoted. I did ask if they would give me the part number or description of the component needed to fix the TV and he reluctantly gave me the following information: The problem is with the "PCB" ("Power Control Board") -- it has a "BAD POWER LOB+". I obtained a service manual for the unit and found no reference to either of these descriptions.

Can anyone help with this problem?

Thanks

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  • Expert
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Troubleshooting PCB's of certain electronic units require advanced technical skills. no service manual of any source would provide specific solutions. the best you can get are schematic diagrams. if your field of expertise is not related to electronics, i suggest you let the technicians handle the problem for you. every shop have their repair cost qoutations. just be sure to ask for warranty of their repair. goodluck!

Posted on Oct 24, 2008

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This is most likely the whole power board, I would replace it fully or replace faulty component(s)

Posted on Oct 24, 2008

  • Ekse Oct 24, 2008

    you need to locate the power control board, if your not experienced in electronics its best that you replace the whole board, easyest that way. Find the board, where the power goes in, confirm that it is the board the tech ment, find the part number details on it and find a replacement with the details.

  • Ekse Oct 24, 2008

    I can look for a replacement if you post the details or you can look for it yourself, i've seen tv components (hard to find components) sold in ebay www.ebay.com do a search there.

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Posted on Jan 02, 2017

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