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Sony LCD with 13 blinks    
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PostPosted: Wed Aug 19, 2009 11:18 am    Post subject: Sony LCD with 13 blinks Reply with quote

Have a Sony LCD model # KDL40V3000, FIX2 chassis in shutdown with 13 red
LED blinks.
The backlights fire off for a second or so and then the shutdown.
I have the service manual and it says balancer (inverter) board, so I
ordered and installed it, but no fix.
When I scope the transformers (hold the probe on top), they all show the
same waveform except for one. The ninth one down has the same frequency as
the rest, but the amplitude is higher. Also, when I have my scope on that
transformer it generates an audible buzz and none of the rest do that. The
new inverter board behaves the same way. I was wondering if that one lamp
is weak or bad, and not drawing the right amount of current, thus the higher
amplitude waveform and probably an error code back to the main board,
however the FB pin (which I presume is feedback) stays low (0V) the whole
Am I on the right track here, or chasing a red herring ? If anyone has
ideas or a training manual I'd surely appreciate it.

PostPost subject: Advertisement

curt wolfe

Joined: 24 Feb 2009
Posts: 51

PostPosted: Thu Aug 20, 2009 1:56 pm    Post subject: Reply with quote

13 blinks is the panel or lamps bad but must replace panel.
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