Re: Phillips 42OFL3704D/F7
Check the capacitors on the inverter board and the 2 fuses. There are also 8 fets you should check.
Check the capacitors on the inverter board and the 2 fuses. There are also 8 fets you should check.
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Hello.
My TV is a QE65Q800TATXXC Samsung TV.
Issue : When you plug the 220V, voltages are OK on the power board and you can hear the click from the relay, but TV is not starting when power button is pressed. Red led is blinking when you press power button. But no images or sound ( Back-light is off )
Then if you disconnect the cable from the main board to the power supply, the TV back-light turns on.
Any ideas to check would be very appreciated 😊
After reading some posts on this forum, I suspect an eeprom issue so I bought a CH341A to dump... -
Hi.
Some weeks ago, my beloved 10 years old PC went belly up
When I press the power button, the video card cooler start spinning, but I hear no POST beep and I see no image on the screen.
The CPU gets mildly warm, but it might overheat if let running more than a few minutes without radiator, so I let the radiator on it (no fan).
There is no chip overheating - I "fingered" all of them
, I looked also through a cheap thermal camera.
Not a single LED lights up.
Power supply
I measured the power on all pins. It is all... -
Hello. I bought a faulty Lenovo ideapad 3, but it turns out the 3Valw buck converter burnt a hole through the board. I was able to clean it up, and remove all the shorts. I now can power the 3.3v rails from a bench power suppy while connecting the laptop to its psu, and I get the additional 5valw, 1.8v, and 1.05v, form what I can tell in the schematics, those are the only 4 voltages I should see before turning on, and they are present. When I hit the power button, the power indicator on the left side turns on (not the one on the power button), stays on for about 12 seconds, then turns off for... -
Hi.
picked up another TV. This time is a Vizio M65-C1. TV does not turn on. I had repaired another 60 inch vizio , Bad main board.
When power button is pressed, the Power led indicator on the bottom right, turns for a few seconds and then it fades away. No backlight or Vizio logo on screen. Removed back cover and repeated test.
This is the TV This TV is a little different from the Samsung I have worked on. Power supply is on the Left side, Main Bd is on the right side, T-CON , not in the picture is on the bottom. I am assuming that the boards in the middle are the LED... -
I finished my work for this year, so I'm free until January 6th.
My last task it's unresolved and I'm looking for ideas for the return in January.
So what's about...
This laptop is booting in 3-4 seconds has no password and every voltage is present. So far so good.
My problem is that it doesn't boot from anything. !...just stays with a blank screen(backlight only)
No USB boot (in fact partially no boot...), no PXE boot nor boot from M2.SATA or NVME...crazy...
The Ventoy USB (EFI) boots in the menu system but after selecting one of the ISO (like a simple...
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