Hitachi P50S601 blinking 3 times

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talmorin
talmorin's picture
Hitachi P50S601 blinking 3 times

We had several short power outages in succession a few days ago.  Afterwards my Hitachi P50S601 stopped working.  If I cycle power to it, it comes on in standby with the red light illuminated.  When I turn it on with the remote, the blue power light comes on, there is a flash of something on the screen, then the screen goes blank and the blue light slowly blinks 3 times, then pauses, then repeats the cycle. 

I have tried unplugging the TV for several hrs, and tried cycling power several time, but the same results everytime.  Any ideas? 

Randomlynot
Randomlynot's picture
Did you ever get an answer? I

Did you ever get an answer? I am having the same problem.

slinteriors
slinteriors's picture
Heres how to determine if the

Heres how to determine if the Power supply is the problem. First unplug connector CN68 which goes from the power board to the Logic Power board. Press the power button on the set and check for 3.3 at pin3 of CN68 if its missing or incorrect then the power supply board needs replacement if the supply is correct then the logic board would be suspect. If you need further assistance let me know as I am a registered Hitachi servicer and have access to all parts and t-shooting procedures.

evil
evil's picture
http://www.techlore.com
nickguitarguy
nickguitarguy's picture
slinteriors - I just wanted

slinteriors - I just wanted to thank you for the diagnostic advice you gave on here. I haven't checked this yet on mine, but with the same problem, I feel this is a helpful place to start.

slinteriors
slinteriors's picture
you're welcome. Let me know

you're welcome. Let me know if you need further assistance.

nickguitarguy
nickguitarguy's picture
well checked my voltage. It

well checked my voltage. It was not there. I am a little poor college student right now, so buying a new power supply is out of the question. I ordered all the capacitors on the board to replace them and try rebuilding this power supply. We'll see. I've worked on other brands before and had luck with fixing power supplies. If worst comes to worst I can hold off and order a new board later. We will keep you posted.

nickguitarguy
nickguitarguy's picture
So, I got my 3 Blinking

So, I got my 3 Blinking Hitachi P50S601 fixed!!! Turns out it was one of the buffer boards was bad. In my case the SDR-D board. The way to test it that I found was unhooking one SDR board at a time, and see if half of your screen comes on properly. For me the SDR-D board was bad, and so the bottom half of the screen didn't come on when I removed the board. I have now sent that board off for repair (found that to be less expensive then buying a replacement board). Hope this helps someone else out. Thank you all for your help!

evil
evil's picture
Thank you for keeping us

Thank you for keeping us updated on the progress. Glad to hear you got a diagonosis.

9990shane
9990shane's picture
So I'm having same issue.

So I'm having same issue. What is a buffer board? And how do I find it to unplug?

slinteriors
slinteriors's picture
the two boards on the far

the two boards on the far left theres an upper and lower ones that are thin and attach to the flex cables coming from the panel.

 

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