Hisense H6750G stumped on this

[Diah]

Re: Hisense H6750G stumped on this

105V by LED tester sound to me not good.... how about when you start the tv did you have any up and down V, u need to put the probe in place then turn on

BTW STB 2.6V very low

so you need to do the first test and second leave the PSU alone with out MB connected and check V on the its socket we want to know STB

[nomoresonys]

Re: Hisense H6750G stumped on this

Check XP901, voltage on the BRI pin, check it in standby then power on tv, what voltage do you get in both situations?

[EazyBone]

Re: Hisense H6750G stumped on this

Also is 75 inch.

As a note w833,832,830,834,835 are all at -5v (checking in DC with chassis ground) and start and -5 and drop all down to zero, if that means anything.

[EazyBone]

Picked up another free one. The original owner replaced power board to try and fix them gave up gave to me

Problem: Red led standby light blinks once every 5 seconds repeatedly for ever.power button does nothing. Nothing turns on.

PSU, 12v are all 12v to main, 18v are all 16.6 stby is 2.6
Disconnect main and 12v is 10.5 and 18v become 14.4.
This is the same for BOTH psus.

Backlight tester turns on backlights at 105v each strand and work properly.

I cannot get ANY voltage to backlights on either power supply. They remain zero always.

I am stumped. I put pictures. Is there any way to jump this on or does anyone have any insight. The main is getting some voltages as it should.

Does the main tell the PSU to turn on backlight voltages? Should I have some sort of voltages at the PSU for LEDs? Help lol

Also thanks everyone whose been helping me! I've fixed many many tvs now and it's going great 👍👍👍💯💯💯