Question about Toshiba 50HX81 50" Rear Projection Television
You should test a couple of things. If you have a fairly good dmm (digital multi-meter) or like analog meter set it for continuity. Test F860 a small 5 amp pico fuse for open. If open suspect Q801, Toshiba p/n# 23906253. Replace it and the pico fuse.
If nothing open there next test F470 a 3 amp pico for open. If open replace it and the horizontal output transistor 2sd2553, Toshiba p/n# 23314955 and Z450, your voltage divider, Toshiba p/n# 24082877 or its generic equivilent Tpa5007bh. Also replace D478 off the base of Q470 for good measure. D478 is a 30v zener diode.
If you have any trouble with what I've written here print it out and find a good shop. They'll easily understand what I've outlined here and it will better help them in testing and determining the problem.
Posted on Nov 05, 2007
SOURCE: Toshiba TZ50V51
First step is to use an ohmmeter and check all fuses including
small,soldered in kind called micro-fuses.....F850,F851,F852 etc
Posted on Mar 15, 2008
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