TV Repair Questions? Ask a TV Technician
Ok, the part number you need to replace is TNPH0793AC also numbered TXN/A1DWUUS
Right now, I'm not finding any in stock. That board is the board with all the Input jacks on it.
You should Google that part number every 3 Days and get one.
If you have any questions, just ask
Tips are greatly appreciated !
let me tell you this the power supply after the reley clic on ther is i noise coming out from the power supply i am not sure from where .
If you have 5 volts on P25, then the A board has power to the 3.3 Volt regulator and it's not producing 3.3 Volts. That's what the 3 blink fail code tells us, no 3.3 Volts. You check the 5 volt line before calling the 3.3 volt supply bad.
Check PIN 5 and 6 on Plug 25 with the TV powered up, follow my previous picture.
MODEL -- TC-P50G10
Chassis -- GPH12DU
are you 100% sure because like i said the power supply make a buzzing noise after the relays click on an than go to stand by
This is what I KEYED in on when I told you to replace the board I listed above --
We know we're getting 15 Volts to drive Both the 3.3 Volt and 15 Volt lines, PLUS we have our standby 5 that I had you test.
Now, since the 3.3 Volt regulator is not working, but the 15 Volt is, we get 3 Blink fail code instead of the 2 blink code.
We know the micro is functioning because we GET a code in the first place !
We KNOW the A-Board is bad....and it's likely shutting down the power supply board, which could certainly affect relay operation on the power supply board.
So....you want to FORCE the power supply ON??
Let me show you how that's done --
First, we pre-stage the power supply so we don't take out any other boards --
Once that's done, then we force the Power supply ON -- PLUG P25 Pin 11.
Unplug A25, find pin 11 (marked) and connect it to PIN 9, the 5 Volt standby supply.
And hope it doesn't smoke the power supply.....if it does, then you were right to be concerned that the power supply was also bad......
As for me...I'll trust the TV set to tell me the A board is what is bad.
Hmm, that has got to be the A-Board
MODEL -- TC-P50G10
3 BLINKS -- 3.3 Volts SOS. 15V (P) line is monitored as is the 3.3, yet the 2 Blink code never shows up. Something using 3.3 Volts has got to be pulling the 3.3 Volts down
A31 Ribbon Cable on the A board does deliver 3.3V (P) to the C2 board.
In this PICTURE, check out the 15 Volt and 3.3 Volt power supplies -- 15 is Blue, 3.3 Volt is Yellow --
The Green box is something I found that wasn't mentioned -- The 3.3 is supplied to the Data Driver board at the bottom of the TV set in the middle.
To test that...You make sure you DISCONNECT BOTH cables noted in the above picture.
THEN it's ok to turn it on and see if the 3 Blink Code is NOT showing up anymore !
So, do that. Disconnect the VDA line to power down those boards, then disconnect the Ribbon cable noted. That's the only other line I could find that uses that 3.3 Volt power regulator, and the Service manual didn't list that at all in the Fail codes.