It's been a while since i tried to fix a TV and im feeling a bit rusty. bear with me. i didnt see this tv listed anywhere in the forum so i figured id start a thread for it.
what it does:
when you first plug in the power cord the white standby light lights up for a few seconds then fades away to off.
pressing power brings the light back on full bright but there is no backlight and i cant see any image on the screen. the light fades a little but stays lit.
after about 10 seconds of being on, pressing power again turns it off just fine, with the standby light glowing brighter for a second before turning off
checking the voltage on the PSU, everything seems to be there in the ON state. 24v, 12v, 5v, are all there.
looking at the LED driver board i see 42v on the two LED+ pins and 11v on all the others (i dont understand how this LED board works. used to seeing vled+ and vled- on other boards)
but the board is getting the right power (24v) from the psu....
i looked around and of course cant seem to find the service manual or schematic for this board.
im leaning toward LED strip failure as a gut impulse, and i have LED tester but since im not sure how to use it here since i dont see vled+ and vled-
just two vled+ and then fb1-9 for the other 9 pins.
any help would be greatly appreciated.
what it does:
when you first plug in the power cord the white standby light lights up for a few seconds then fades away to off.
pressing power brings the light back on full bright but there is no backlight and i cant see any image on the screen. the light fades a little but stays lit.
after about 10 seconds of being on, pressing power again turns it off just fine, with the standby light glowing brighter for a second before turning off
checking the voltage on the PSU, everything seems to be there in the ON state. 24v, 12v, 5v, are all there.
looking at the LED driver board i see 42v on the two LED+ pins and 11v on all the others (i dont understand how this LED board works. used to seeing vled+ and vled- on other boards)
but the board is getting the right power (24v) from the psu....
i looked around and of course cant seem to find the service manual or schematic for this board.
im leaning toward LED strip failure as a gut impulse, and i have LED tester but since im not sure how to use it here since i dont see vled+ and vled-
just two vled+ and then fb1-9 for the other 9 pins.
any help would be greatly appreciated.
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