Question about Televison & Video
The TV will turn off in about 3 sec - seems like a power supply issue; I have replaced I-901 (STA-X6456) with no luck. Something is making the overload protection turn off the power supply, correct? What is the best way to isolate the problem? Any help is highly appreciated :-)
On most Hitachi circuit boards there are small green lights in the circuitry that show if a section of the set is working. Also,there are small protection fuses that look like resistors on the board around the power supply transformer. Check to see if any of those are open and it will lead you to the trouble spot. More than likely on that set it is convergence, vertical, Cold solder in horizontal (FBT or H.Drive xfmr.), cold solder at vert. output, regulator i.c., or audio out. Make sure you check the fuses that go to the convergence amps and look for discoloration on resistors surrounding conv. STKs. These are prone to change in value or burn up. Hope you have some luck solving this, Russmann.
Posted on Jun 24, 2008
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Posted on Jan 02, 2017
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