Have a p50h401. In last week a few times, power

Hello williams6590,

Welcome, and thank you for using FixYa!

Your problem is the X-Sustain Board. There are a large number of componants and connections on this board. I recommend purchasing it from eBay! and then having a TV Repair Professional install it.

Here is a link to purchase the part:

X-Sustain Board

http://www.ebay.com/itm/HITACHI-P50H401-X-SUSTAIN-BOARD-JP54571-/200646905177?pt=LH_DefaultDomain_0&hash=item2eb77ccd59

Have a great day!

I had the exact same problem as some one else! We had the tv about 14 months, was coming do
wn the stairs and heard a loud pop. Now we have no audio or video and the blue power light is blinking 4 times which is supposed to be some kind of code, however when i called hitachi, they were not able to tell me what was wrong and as was said by the other person who had the same problem, conveniant for hitachi, the manufacturers warrenty had just ran out!! I will never buy another Hitachi product again!!!There seems to be a re-occuring problem here that requires a class action law suit!

I believe the power supply is bad. Will replace soon and try.

unplug the unit for a while like one hour or so.

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.

sound like mine,the two power clips have gone,midle panel to left,need to be replaced,if still no good,need new mother board with the clips.

Ur power board inverter is dead.
U need a new board.

I think you have problems with the digital main PWB.

If the power PWB failed, turn off and change the pilot ligth to red.

I am having the same problem, what was the solution to this problem? And how much did it cost to fix it?