Model P42h401 Hitachi plasma won't turn on. When shunting fuse slot, can hear grindy transformer hum, bad ps?

IF you got a good board and a lot of replacement boards aren't good the only other thing that would make the set dead is if you have a bad main board, if your able to pull the back off and test the either 3.5 or 5 volt standby voltage if its ok then look at the PSON voltage, it should be at a half volt and go to about 3.5 when the power button is pushed..if you don't have standby you have a bad power board yet, if you have standby but no PSON the main board is bad, if you have PSON its back to the PS as being bad...Good luck!!

Based on what you have tried if a buzz or loud static via the speakers you have something wrong in the audio output circuit of the set--problem here is that circuit may be part of the Main board that processes all signal---a look inside---following the speaker leads back would lead you to that board.

A simple thing to do to narrow it a little (you may have done this) is with sound all the way off put your ear to the internal speaker--hear anything at all like a deep hum?

Depending on age of set and cost of the board likely bad it may or may not be a do it yourself repair.

SD TECH

The Main digital board has problem, part# UX28023 (for P42H401, not P42H401A) , approx $170.

NO POWER LIGHT, NOTHING. IS THERE A RESET FOR THIS HITACHI?

Hello

Thias will help you

http://reviews.pricegrabber.com/plasma-lcd-televisions/m/36216485/


http://www.reviewgist.in/hitachi-p42h401-tv-reviews?sortBy=dateAsc

http://reviews.cnet.com/flat-panel-tvs/hitachi-p42h401/4505-6482_7-32331462.html

Thanks

You can order a replacement stand assembly for this model (P42H401) from a major Hitachi parts distributor at the link below:

Hitachi P42H401 Replacement Part Stand Assembly / Table Top Stand

Yes

I believe there is a Suitable port on the TV for this. Typical VGA (D-SUB) Cable will suffice same as monitor.

main power switch -underneath screen on right side

find and push the "reset button"