All voltages on the PSU seem fine. i have 12v and 24v going to the Driver board and Mainboard. strangely this PSU does not have a wire where the 5V should be. also theres some other unused pins that are labeled for 3D stuff.
never worked on a tv where the PSU didnt have 5v...
the tv responds to the power button, increasing the PFC from 170 or so to 400 and staying there, plus all output voltages seem fine and stable. another press of the power button followed by a long press will result in the tv shutting off (as these models with only one button do)
on the driver board CN806, is the cable coming from the PSU, and it reads 24v for pins 1-4 and 0v for pins 5-8
also on the driver board, CN805 is the cable coming from the Mainboard and reads as follows:
1-0
2-0
3-3.03
4-0
5-0
6-0
7-0
8-4.87
9-0.03
10-12
11-NC
of course i have no idea what the voltages should be on this connector...
because none are marked, on the top or the bottom, or on the mb.
and also there are no voltage markings for the cables that go to the LED's
but at the end of the day, i have 0v on all pins of all 4 connectors that go to the LED's
because PSU seems to be outputting correct voltage, and MB is responding to pwr button to turn on and off, i lean towards the problem being with this driver board.
only thing has me worried is i think i should be able to see image with a bright flashlight but i cannot.
i would like to test for sound but its hard to change the inputs blind...
i find a lot of LED driver boards on ebay for pretty cheap, but i'd like to be a little more sure before just throwing parts at it.
thanks for any input!
never worked on a tv where the PSU didnt have 5v...
the tv responds to the power button, increasing the PFC from 170 or so to 400 and staying there, plus all output voltages seem fine and stable. another press of the power button followed by a long press will result in the tv shutting off (as these models with only one button do)
on the driver board CN806, is the cable coming from the PSU, and it reads 24v for pins 1-4 and 0v for pins 5-8
also on the driver board, CN805 is the cable coming from the Mainboard and reads as follows:
1-0
2-0
3-3.03
4-0
5-0
6-0
7-0
8-4.87
9-0.03
10-12
11-NC
of course i have no idea what the voltages should be on this connector...
because none are marked, on the top or the bottom, or on the mb.
and also there are no voltage markings for the cables that go to the LED's
but at the end of the day, i have 0v on all pins of all 4 connectors that go to the LED's
because PSU seems to be outputting correct voltage, and MB is responding to pwr button to turn on and off, i lean towards the problem being with this driver board.
only thing has me worried is i think i should be able to see image with a bright flashlight but i cannot.
i would like to test for sound but its hard to change the inputs blind...
i find a lot of LED driver boards on ebay for pretty cheap, but i'd like to be a little more sure before just throwing parts at it.
thanks for any input!
Comment