Question about Toshiba 42H81 42" Rear Projection Television
My Tv currently has no picture. To get a tech out is proving to be difficult. Can I open up the front and see if it is something as simple as a burned out bulb? Where would I go to buy parts?
It won't be a bulb or something simple from the front. My guess is that the convergence cirsuit is having a problem.. Several pico fuses you could check are F850 F851 which are 5 amp p/n # 23144842 and F852 is a 2 Amp p/n #23144841... This will indicate that the convergence amps are probably defective and/or some ring cracked joints are causing some problems, like jumper 010 in front of L7711... You really need a tech to repair this unless you have some hidden electronics talent. Tracing you'll need a dmm and scope at the least, not to mention soldering station and all the obvious other equipement.
You might try the NESDA site to locate a tech near you if you live in the states. http://www.nesda.com/locator/state_search.php
That way you can be assured of getting a reliable, highly trained technician for the job.
William Rayburn, CET
PO Box 442
Long Beach, WA. 98631
Posted on Nov 04, 2008
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Posted on Jan 02, 2017
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