Question about Toshiba 55H70 55" Rear Projection Television
I have sound and I hear the bulbs click as if they are starting up, but no picture. Usually after a period of 2 minutes or so, with the power disconnected, it will start up. I have noticed, when it is working, that the picture takes longer than normal to get fully bright, howerver, everything else is as normal. I assumed it was getting hot, so I cleaned out the dust, but this morning it wouldn't light up at all, so temperature doesn't seem to be the reason. Also, when the power is on with no picture, I can turn the power button off and I get a bright flash from all three bulbs as it urns off. If I try to turn the power on again from the button I get a flashing light from the power button indicator on the front of the tv. Disconnecting the power seems to be the only way to reset this. Any help on this would be greatly appreciated.
The deflection board in failing, eventually it will not come on at all, disconnecting power is only reseting the HV shutdown protection circuit which is the reason your set if failing. Have a technician replace the Horizonal Output Transistor and the flyback transformer.
Please comment if you need futher assitance.
Posted on Sep 29, 2009
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Posted on Jan 02, 2017
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