Preamble: (skip if TL/DR)
This project started with a complete LED strips replacement because 6 of the 12 total strips were dim.
We replaced all 12 strips - then we put the TV back together and it will not turn on. As I said, I have standby voltage but no LED voltage anywhere in the TV.
I noticed the Power On button on the back of the TV was mashed down by the back cover, now one side of the button has broken off, It's just a piece of plastic that presses a metal button. All I could do was take that button off all-together and will use a pencil eraser if I ever need it.
NOTE: MY TV has only 4 LED voltage contact points on the power supply board. There are 12 LED strips total, but they fit together to go across the entire TV, so it is like 6 long strips. The dead strips (X) were arranged on screen like this. (We were hoping to fix this)
xxxxxxxxx000000000
xxxxxxxxx000000000
xxxxxxxxx000000000
000000000xxxxxxxxx
000000000xxxxxxxxx
000000000xxxxxxxxx
E70-E3 WON'T POWER UP
I also have a Vizio E70-E3 and I have a similar issue to Bobby G but different voltage issues.
On my Power Supply board, I have the correct standby voltage - 16V. But I have NO voltage going to the LED strips on this board and hence none on the mainboard. I tried disconnecting the main-board and remeasuring, but it made no difference in LED V.
With power connected my PSB V. are
LED OUT -- 00
LED OUT -- 00
LED OUT -- 00
LED OUT -- 00
gnd - 00
gnd - 00
gnd - 00
gnd - 00
+16VS = 16vs
AC-DET = 3.94v
PS-ON = -3.1 mv
+16VS= 16v
+16VS = 16v
I do have 110 V on hot side.
This is my power board: (plus my actual pictures are attached.
https://www.tvpartshome.com/wp-conte...9/01/57-23.jpg
This project started with a complete LED strips replacement because 6 of the 12 total strips were dim.
We replaced all 12 strips - then we put the TV back together and it will not turn on. As I said, I have standby voltage but no LED voltage anywhere in the TV.
I noticed the Power On button on the back of the TV was mashed down by the back cover, now one side of the button has broken off, It's just a piece of plastic that presses a metal button. All I could do was take that button off all-together and will use a pencil eraser if I ever need it.
NOTE: MY TV has only 4 LED voltage contact points on the power supply board. There are 12 LED strips total, but they fit together to go across the entire TV, so it is like 6 long strips. The dead strips (X) were arranged on screen like this. (We were hoping to fix this)
xxxxxxxxx000000000
xxxxxxxxx000000000
xxxxxxxxx000000000
000000000xxxxxxxxx
000000000xxxxxxxxx
000000000xxxxxxxxx
E70-E3 WON'T POWER UP
I also have a Vizio E70-E3 and I have a similar issue to Bobby G but different voltage issues.
On my Power Supply board, I have the correct standby voltage - 16V. But I have NO voltage going to the LED strips on this board and hence none on the mainboard. I tried disconnecting the main-board and remeasuring, but it made no difference in LED V.
With power connected my PSB V. are
LED OUT -- 00
LED OUT -- 00
LED OUT -- 00
LED OUT -- 00
gnd - 00
gnd - 00
gnd - 00
gnd - 00
+16VS = 16vs
AC-DET = 3.94v
PS-ON = -3.1 mv
+16VS= 16v
+16VS = 16v
I do have 110 V on hot side.
This is my power board: (plus my actual pictures are attached.
https://www.tvpartshome.com/wp-conte...9/01/57-23.jpg
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