Question about Toshiba 42H83 42" Rear Projection HDTV-Ready Television

Toshiba Rear Projection TV 42WT29B

When i turn the tv on nothing comes on irrespective of the input selected. sometimes i leave it on for hours and the picture comes up but withing a short time the picture start rolling then i will have to turn it off, if i am lucky i turn it on again and it comes up but again the pictures start rolling even if it does not roll when i change the channel it will not stay long then it will start rolling this is driving mad.... any help will be very much appreciated thanks

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3,130 Answers

This is a problem with the low voltage condition in the main power supply or the sweep supply, or there is bad capacitors in the vertical driver circuit, or the PIP circuit if there is one. the best way to troubleshoot this would be with a schematic, measure all the voltages and see if there are any lower then normal levels. In the vertical and PIP circuits, you will need an ESR type capacitor meter. if you dont own this equipment, or have had no experience working on solid state electronics, play it safe and call in a tech to assist you in this repair. Good Luck Please dont forget to rate this thread.

Posted on Dec 12, 2006

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