Posted on Nov 16, 2009

My hitachi P50H401 will not turn on. No sound no

My hitachi P50H401 was watching then a loud snap and black screen and not sound. will not turn on. No sound no video. LED blinking blue flashs 4 times. replaced Main PWB based upon repair manual troubleshooting guide with no change.

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Anonymous

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Posted on Feb 22, 2011

Anonymous

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Check your sdr boards. you can test them with a multi meter. they are known for going bad. what happens is the two caps by the output go bad on the power supply and they make the sdr boards burn out. you can replace the two caps and save lots of money. then please check out this web page http://www.hometheatershack.com/forums/hitachi/38229-hitachi-p50h401-led-flashes-3-times.html

This web page has info about repairing these. The 4 flashing lights maybe the x sus or the y sus but it's still a good idea to check the sdr boards since its a common failer. I had one tv with a bad sdr board flash 3 time and another set it was flashing 4 times.

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