Re: Vizio E7-E3 Black Screen
Hi Bud, on your points.
1) When I looked at the E70-E3 LED replacement video on youtube, what I saw, correct me if I am wrong, was 6 rows with two strips per row.
1 Full row/ 2 strips = 18 LEDs with 9 per strip 9x2. If as you say VF = 3.1v x 18 =55.8v per row.
Maybe I am not thinking correctly. As you mentioned 1 red per row and one black per strip.
As for the black wires, I am not familiar with how an LED circuit works but if I understand correctly, there SHOULD be in this case of 57v per red, 28.5v(57v/2) on each black wire?
2) With both of those being low, would that indicate a faulty PSB in addition and irregardless to whatever else is going on with the LEDs? Replacement/ repair PSB?
3) I will have to ask my brother on this. He asked me about the "half black" some time ago but never addressed it at that time until it went full black as it is now. Answer later today after I ask him and I will try disconnecting the T-Con ribbons from the panel.
4) I will get the part number for IC U400 later today.
Thanks again. You are teaching an old dog new tricks.
Originally posted by budm
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1) When I looked at the E70-E3 LED replacement video on youtube, what I saw, correct me if I am wrong, was 6 rows with two strips per row.
1 Full row/ 2 strips = 18 LEDs with 9 per strip 9x2. If as you say VF = 3.1v x 18 =55.8v per row.
Maybe I am not thinking correctly. As you mentioned 1 red per row and one black per strip.
As for the black wires, I am not familiar with how an LED circuit works but if I understand correctly, there SHOULD be in this case of 57v per red, 28.5v(57v/2) on each black wire?
2) With both of those being low, would that indicate a faulty PSB in addition and irregardless to whatever else is going on with the LEDs? Replacement/ repair PSB?
3) I will have to ask my brother on this. He asked me about the "half black" some time ago but never addressed it at that time until it went full black as it is now. Answer later today after I ask him and I will try disconnecting the T-Con ribbons from the panel.
4) I will get the part number for IC U400 later today.
Thanks again. You are teaching an old dog new tricks.
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