Question about Toshiba TheaterWide 46HM94 46" Rear Projection HDTV
I replaced the lamp in it with a Toshiba unit ($199.00) about 6 months ago and it's seen very little use since then, but now the TV is showing an error code when I go to turn it on. It tries to turn on 8 times, then flashes both the green and red LED together. If I keep trying for a few hours, eventually the TV will come on and it'll stay on indefinetely, but once you turn it off it may take hours to get it to turn back on again. So, as far as I know the lamp is still good. I pulled it out and there are no signs of a blown lamp or anything like that. Any ideas what coud be wrong and will it be expensive to fix?
The reason the set is not coming on is because the shutdow circuit is doing what it is supposed to do. The TV might be experiencing some sort of current overload which disappears after a time. However if this is the case here is a possible way of troubleshooting this problem. get a schematic and turn to the power supply section turn on the TV and measure the output voltages of the power supply then measuer the voltages in the horizontal section to determine if the HV section which is part of the horizontal section is working properly. I believe that your problem lies somewhere between the low voltage power supply (switching transformer based) and the high voltage power supply (IHVT based). Make sure to check your fuses. Now this is a start, the point is you need to find out if the problem is or is not a power supply issue.
Posted on Oct 04, 2007
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Posted on Jan 02, 2017
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