hello, my Vizio e420vl gets stand by voltage and i tested PS-on and it reads 1.1v, I unhooked PS/on from the main board with all other wires connected and PS/on reads 3.3v on main board. when i gave PS/on 3,3v with a resistor from 5v, i can hear the PS start but same 1.1v. I checked all Vregs and all seem good, except the one by the LG chip(driver I assume) but it has no input. all fuses are okay. thanks in advance if anyone can help
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Re: vizio e420vl orange light, nothing else
here are picsAttached Files -
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Re: vizio e420vl orange light, nothing else
okay i was doing some probing with my scope and dmm and after a little bit i tested my PS/on and I had 3.3v so I put it back together ran it for a few hours it was fine. now after being off it has the same problem. any suggestions?Comment
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Re: vizio e420vl orange light, nothing else
You may have a cracked solder joint or a short between pins on the power supply or main board, check them carefully for contamination or cracks.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: vizio e420vl orange light, nothing else
that is kind of what i suspected, thanks for the reply. i will report back after further testingComment
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Re: vizio e420vl orange light, nothing else
I had the same thing on the same tv model It was the eeprom on the main board. Search for a thread on it. I got a new one off shop jimmy for 20 bucks or so. From what i read this model is known for that. Might not be what you have but something to look into.Comment
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Re: vizio e420vl orange light, nothing else
okay i will check the eeprom, its on the bottom of the main board ? right? I cant read the numbers because there is black marker writing on it. now is it an eeprom or a flash chip? I guess Ill have to get my buspirate out to sniff the spi lines.Comment
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Re: vizio e420vl orange light, nothing else
alright I changed out the eeprom which is actually a flash chip and no luck. it seems like something is loading down the ps on line, when ps-on is disconnected from the header I get 3.3v on main board but as soon as I connect it to power board it drops to 1.1vComment
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Re: vizio e420vl orange light, nothing else
Where did you get the flash chip? It needs to be programmed with the correct Vizio firmware for your model.Comment
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Re: vizio e420vl orange light, nothing else
i ordered it from ebay, from a suggested seller on this forumComment
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Vizio e601i-A3 - Has Sound and Display, But No Backlight - Bad Power Supply Board or Bad LED Bulbs ?I was given this TV from my great uncle. He said it just wouldn't turn on one day out of nowhere, replaced the TV, and gave it to me to possibly fix and use for myself.
Upon bringing it home and plugging it up, it showed a standby light.
I powered it on and without a flashlight, the display showed the "V" but the lighting is very dim, but visible.
The screen seems to blackout and stay black, but with a flashlight I can see the display.
With my Playstation 4 connected via HDMI, and running a game I can hear sound.
Assuming... -
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... -
Hi.
picked up another TV. This time is a Vizio M65-C1. TV does not turn on. I had repaired another 60 inch vizio , Bad main board.
When power button is pressed, the Power led indicator on the bottom right, turns for a few seconds and then it fades away. No backlight or Vizio logo on screen. Removed back cover and repeated test.
This is the TV This TV is a little different from the Samsung I have worked on. Power supply is on the Left side, Main Bd is on the right side, T-CON , not in the picture is on the bottom. I am assuming that the boards in the middle are the LED... -
Hello Everyone!
I have an Acer Aspire A315-42 laptop. I generally leave it on for long time by closing down its lid (so it enters the sleep mode). Recently, it rained quite heavily in out area. And the humidity and moisture seem to be high. So one late evening, after I opened the lid and turned on the laptop, it did power on as the blue light turned on but after it booted to the desktop screen, just 5-10 seconds after both the screen and blue light went out and laptop shut down (the blue power light turned orange). And after 2-4 seconds that orange light went off and the laptop died....06-28-2025, 02:57 PM -
Failure Symptom
No picture, just red vertical stripes. Google search shows quite common problem for these recent Vizio M series although red vertical stripe pattern may differ. Some call it "Netflix" boot screen haha.
Where is the short?
Panel has 4x buffer boards. Quickly found the 1/4 panel buffer board with the problem by selectively disconnecting buffer board flex cables.
Having recently fixed another Vizio with similar symptoms that was a shorted ESD diode array ( link ) Probed the ESD diode array but...
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