Hi
i have the above tv, that i got as spares/repairs, yes it boots find but no back lights, can see pic with bright light,
so i knew some of the LED's have blown, stripped it down and found 7 LED's out, replaced and now all working, but the power board now seams at fault, only getting 79 volts for each set of LED's, that is not enough for a set of 3 strips that shows needing 92 volts. there are 2 sets of 3 strips in the set.
thinking it was a board issue, i ordered another from EBAY, and tryed that, but still no back light and only 79 volts for each channel, same as my board, so i now need help. board is 17IPS20, and yes i know there is so many versions of this board, and can't seem to find any info for pin outs and volts.
took some pics, but they are not great, will see if i can get better latter.
by the way, the pic with the board number and the LED connector plug, you will notice that a black neg wire is missing, i have used ground of the chaise as could not get a reading from it when testing the POS conection next to it, but grounding the black wire gives me a reading of volts.
i have the above tv, that i got as spares/repairs, yes it boots find but no back lights, can see pic with bright light,
so i knew some of the LED's have blown, stripped it down and found 7 LED's out, replaced and now all working, but the power board now seams at fault, only getting 79 volts for each set of LED's, that is not enough for a set of 3 strips that shows needing 92 volts. there are 2 sets of 3 strips in the set.
thinking it was a board issue, i ordered another from EBAY, and tryed that, but still no back light and only 79 volts for each channel, same as my board, so i now need help. board is 17IPS20, and yes i know there is so many versions of this board, and can't seem to find any info for pin outs and volts.
took some pics, but they are not great, will see if i can get better latter.
by the way, the pic with the board number and the LED connector plug, you will notice that a black neg wire is missing, i have used ground of the chaise as could not get a reading from it when testing the POS conection next to it, but grounding the black wire gives me a reading of volts.
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