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Hitachi P50H401 led flashes 3 times.

119546 Views 320 Replies 37 Participants Last post by  georugby
I just picked this tv up today 50 dollars. In the power supply the two caps are swollen like my p50s601. One of the driver chips on the lower sdr board is burnt. If i unhook the sdr board then the tv powers up with the top half working. I am going to replace the two caps in the power supply and look into ordering the lower sdr board. in my p50s601 It was the top sdr that was bad now this one its the lower one. everything looks the same as the p50s601.

If you have this model check out my other tread with info about this model. http://www.hometheatershack.com/forums/hitachi/30302-p50s601-blue-power-light-flashing-3-times.html

click this link to see about the sdr boards and how to test the chips if you dont see burnt ones. http://ww2.justanswer.com/uploads/OriginalSeadog/2009-11-26_232005_DW3BufferICs.pdf

click this link for the trouble shooting flow chart. http://ww2.justanswer.com/uploads/O...55402_P50H401_Trouble_Shooting_Flow_Chart.pdf

another link showing you how to trouble shoot the sdr http://ww2.justanswer.com/uploads/O..._Trouble_Shooting_DW3-no-pix-troubleshoot.pdf


This wont let me update the title. I forgot the H in P50H401
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Got the same tv P50H401, same problems. Anyone had problems from the YSYS board? Even if you changed the two capacitors, did you still had a problem elsewere that pointed to the YSUS board? I followed a failura analysys chart that led me to the CN32 connector, where they ask to check four pairs of pins and I did so. Three of the pairs on the connector gave me an ifinit reading, and one pair gave me 505/1704 reading.
Does that mean my YSUS board is out too?
Anyone tried this part before and where does it lead for a repair?

Thanks in advance

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