No power, No power led
Philips 55PUS7272
Hey, today a 55 inch uhd tv rolled in my door and i proceeded with some diagnostics in my attempt to try to learn this kind of stuff. i’m very new but i want to learn hehe.
So, to my tests and findings.
I plugged in the power, tried powering on with controller and button on the tv. Nothing.
I opened it up, unplugged the power cable to the motherboard from the PSU to see if the backlight would turn on. Nothing.
I then checked the voltages of said cable compared with the stamped pinout on the board and everything is wrong. Every 5v shows 3.6v and every 12v shows 3.4v.
Now, i can replace the PSU, but are my findings a definitive PSU board issue? Also how do i go about finding the exact culprit?
Cette question est-elle utile ?
2 commentaires
@sikator it always helps if you let people know where you measured, what you measure and when you measured. All of that makes a difference. We would need to know which connector, what point on the connector and was the TV on or off when you measured. Did you still have the power board and main board disconnected? All those things are important when diagnosing. Also, I do not believe that Philipps TV's turn the backlight on when your disconnected the main board from the power board.
Yes, from what you are describing, this could be a power board issue. Measure the board correctly and see what voltages you get.
par oldturkey03
My tv has no power supply caming in the tv
par Ravitesh Chand