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Hitachi 60sx12b power problem

 
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PostPosted: Wed Jun 20, 2007 12:00 am    Post subject: Hitachi 60sx12b power problem Reply with quote

Ive got a 60sx12b that when i puch the power button it turns on then off right away. Ive looked in the back and i remember seeing leds light up then turn off. Any suggestions where to start?
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mustang_52
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PostPosted: Wed Jun 20, 2007 9:52 pm    Post subject: Reply with quote

ok, i observed the 5 green leds when i plug the tv in and this is what happends. They all come on right away, then the +27 and -27 leds go off first at the same time. The rest of the leds follow. Does this help out?
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minnie



Joined: 18 Aug 2005
Posts: 2880
Location: Hell

PostPosted: Wed Jun 20, 2007 10:52 pm    Post subject: Reply with quote

Check F903 and see if it's open.
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mustang_52
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PostPosted: Thu Jun 21, 2007 12:42 am    Post subject: Reply with quote

minnie wrote:
Check F903 and see if it's open.


sorry, ive been away from electronics class a long time. Embarassed how do I do that?
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mustang_52
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PostPosted: Fri Jun 22, 2007 6:55 pm    Post subject: Reply with quote

F903 is good. now what? The other fuses appear good too.
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kuhurdler



Joined: 30 Jun 2007
Posts: 3
Location: Olathe, KS

PostPosted: Sat Jun 30, 2007 2:28 pm    Post subject: Reply with quote

those +/- 27V power supplies feed the convergence circuit. You probably need to replace your convergence STKs
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minnie



Joined: 18 Aug 2005
Posts: 2880
Location: Hell

PostPosted: Sat Jun 30, 2007 7:30 pm    Post subject: Reply with quote

Other common failures Q912,Q913,I901.
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