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Hitachi 57F59A convergence and power down    
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TomB



Joined: 25 Jun 2012
Posts: 1
Location: Florida

PostPosted: Mon Jun 25, 2012 6:53 pm    Post subject: Hitachi 57F59A convergence and power down Reply with quote

Hello - I have a rear projection Hitachi 57F59A which has had the convergence problem for quite a few months, although still watchable. The other night, the TV suddenly powered down, when I press the power button the relay clicks, the power light comes on for about 3 seconds, and then powers off - no picture.
I opened up the back of the TV and all the LEDs on the power PCB are green and lit, and all the fuses check out.
I was thinking of doing the IC replacement, or just replacing the entire Signal PWB, since the difference in price is only about 100 bucks and replacing the entire PCB would be simpler than soldering the new ICs into place (my soldering skills aren't what they used to be).
My concern is: before I buy and replace this board, is it possible that the problem could go beyond this board to the power PWB, or am I most likely headed in the right direction by replacing the signal PWB? Im figuring since the conversion was already off anyway (warped), the board needs to be replaced regardless - but Im not sure if the sudden issue with the set not powering up and staying on may be a seperate problem.
Would appreciate any advice...if I can do a simple replacement of the Signal PWB, its a lot cheaper than calling a repair tech out.
Thx!
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JTS1957



Joined: 21 Jan 2009
Posts: 2340
Location: Far, Far Away

PostPosted: Tue Jun 26, 2012 1:52 pm    Post subject: Reply with quote

If you believe that one of the convergence ICs is keeping the set from turning on - remove them and see if symptom changes.
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