I have the above mentioned tv, when plugged in the orange Vizio light illuminates but nothing else via remote or power button. I have 5V stqndy on all respective locations on power board, but nothing else. No bl on, no 12v or 18, naturally since nothing is telling it to turn on. I was able to find 3.3v at the power button, and trace it back via a tiny ribbon cable to main board. Soon as it hits main board and comes out the backside of ribbon connector, its gone. It does respond to pressing jog wheel up to that point. I was able to jump the 5v to the bl on pin and at that point had 12v on all respective pins. 18v pins we're a little high around 20.5v. at the led connections at top of power board I was seeing 180v on both connectors. Still no backlights or any signs of life. Any help would be appreciated. Thanks
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Re: Vizio XVT3D424SV, orange standby light, no other signs of life
Power board 0500-0607-0080 main board 0171-2272-0150 (4c) -
Re: Vizio XVT3D424SV, orange standby light, no other signs of life
Sorry I will add photos when im home, phone giving me troubleComment
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Re: Vizio XVT3D424SV, orange standby light, no other signs of life
Part of original post by mmac1488
I was able to jump the 5v to the bl on pin and at that point had 12v on all respective pins. 18v pins we're a little high around 20.5v. at the led connections at top of power board I was seeing 180v on both connectors. Still no backlights or any signs of life. Any help would be appreciated. Thanks
Normally with the connector to the Main Bd. disconnected,we would, connect a jumper from standby pin to PS-ON pin and test to see if the 12V, etc came up. Then leaving that 1st jumper in place we would put a 2nd jumper from standby pin to BL-ON pin and see if the backlights come ON. So putting a jumper on from 5V pin to BL-ON pin and getting 12V and 18V doesn't make sense to me.Comment
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Re: Vizio XVT3D424SV, orange standby light, no other signs of life
Yep, made no sense to me either.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809Comment
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Re: Vizio XVT3D424SV, orange standby light, no other signs of life
this model vizio have a boot up process, the power LED suppose to flash amber and white, then stop on amber. Then you can power on your TV.
if you are not getting the flashing of the power LED then your main board CPU need to be reball or replace the main boardComment
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Re: Vizio XVT3D424SV, orange standby light, no other signs of life
What I meant was when I apply 5v to the black remember on/off pin 13 on connector cn202 and at that point I had the above mentioned voltages in their respective locations on the power board. 18v on cn203 (actually reading about 20) and 165v on the v-led labled pin (1) on lcn201Comment
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Re: Vizio XVT3D424SV, orange standby light, no other signs of life
I got the labeling wrong when I said I put 5v to the bl on pin. My mistske.Comment
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Re: Vizio XVT3D424SV, orange standby light, no other signs of life
And no, no backlights when I put 2nd jumper to bl_on. It ld on/off pin 15. Not sure what that is honestly.Comment
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Hi. I got a Vizio with no power or standby, and won't turn on with remote or button. I checked the voltages on the connector and all read 0.00V or nearly 0(0.050 ON/OFF pin). None of the pins are labeled STB for standby although I do see some 5V pins. Other than the obvious standby led, which isn't coming on, is there a way to check for standby voltage on this PS. I'm trying to see if my problem is the PS or mainboard. Some Vizios I have fixed with no standby led me to think it was the PS but it turned out being the mainboard. Any experience with this set would be greatly appreciated. -
Have vizio E60u-D3. No standby light. Have searched and read all D??u-D3 posts. posts with same symtoms fixed by new power supply, one guy needed back lights also.
main boards are kinda spendy and, out of stock alot of places. i would like to fix my board.
PS voltages
1 VSNS -2mV
2-5 LED-OUT -2mV
6-10 GND -2mV
11 +16VS 16.29V
12 AC-DET 3.929V
13PS-ON -3mV
14 +16VS 16.29V
15 +16VS 16.29V... -
I have a Vizio E550i-A0 that will not power on. It also does not display the standby light in the corner. I disconnected the main board cable to see if the backlights would light but they did not (maybe this is normal for this set?). I checked the voltages on the plug and they all read in mV or 0, so there's no voltage there. The fuses are ok, and the voltages of the 450v caps read about 160v. I see no visual damage on either the power supply or main board. I have read online that the main board is usually the culprit in this model, but not getting backlights with the main disconnected makes me... -
vizio e650i-a2 (LWJAOZBP Serial) led backlight flashes then turns off, has video (via flashlight) and audio.
panel: au optronics T650HVN05.4
72 led total on 12 strips, 6 led per strip wired in three groups of 24 (led driver board has three anode and three cathode pins)
link to datasheet: https://datasheetspdf.com/pdf-file/8.../T650HVN05.4/1
Vizio 56.04219.641G (liteon PA-3231-01WN-LF) Power Supply Unit
https://www.shopjimmy.com/vizio-56-0...-power-supply/
Vizio 55.75J01.001G (91.75J10.004G) Main Board... -
This is my first attempt at troubleshooting a board like this, I know I could just buy a new board but I'm curious to figure out how this works. I've been testing different components in the evenings this week and I think the problem is with the IC failing to start up for some reason. When the board is plugged in there is no standby voltage.
Then today it randomly sprung to life like a zombie but shortly died thereafter. I have no idea why it would have done that and its the first time I've seen it running. I discharged capacitors on the board last night, then it was sitting today....
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