Question about Toshiba 57HX81 57" Rear Projection Television
Originally my power led would simply flash. After taking a look, I found fuse F850 open. Replacing this fuse worked for a while, but they kept blowing (usually after long periods of operation). Rather than trying to troubleshoot it further I replaced it with a bigger fuse thinking the component that caused the fuse to blow would eventually smoke (I know, probably not a good strategy). Something failed alright, although not visibly. At this point both F850 and F852 had opened. After replacing the two fuses, the relay clicks but the set doesn't power up. The power LED functions normally (the protection circuit NOT active) and I get nothing on the low voltage side or on the input side of the low voltage transformer. I'm thinking now I have two problems. The orignal problem that caused F850 to blow (perhaps convergence IC related) and now a new problem. Does anyone have any experience with failed low voltage regulator ICs going bad? Specifically I'm looking at Q801 (STR-Z4369). TIA
Check for bad solder connections then check all fuses the ones that look like resistors too get back to me
Posted on Nov 02, 2007
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