Looking for some advice on a TV I have. I can power up the TV and shut it down no problem. Audio and blacklight work just fine. But no video is displayed until it's warmed up completely. There will be partial picture displayed, but it's a "frozen" picture. And sometimes only partially complete with random horizontal lines. After about 5-10 minutes everything is fine with the TV. I've pulled the case off it, visual inspection doesn't show any failed parts. Just wondering what direction I should take? I was thinking t-com board. But I've read that you'll never have horizontal line issues from one?
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Re: VIZIO VO370M needs to "warm up"
You've almost certainly got a tab bond issue on the panel. Very common on this model. You can do a search for LCD tab bond repair on youtube and watch some videos on possible fixes. I've had great success on this particular model with 'fixing' the problem by applying pressure to the offending tab with tape and/or a thermal pad. It does take some doing to get access to the tabs though. Complete disassembly of the panel frame. -
Re: VIZIO VO370M needs to "warm up"
Pulled the panel down to see the ribbons. Didn't see anything wrong. Touching the tabs made no difference. Warmed up the ribbons and boards and the screen warmed up faster and starting working correctly. So it's likely the panel I guess. No point in spending more money on a 10 year old TV. So I'll just let it keep on limping along until it fails completely then replace it.Comment
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Re: VIZIO VO370M needs to "warm up"
Hi,
You can also try slightly heating or cooling the cof (chip on film) that is bonded to ribbon cables between the panel and the driver board.
I've seen a couple that develop intermittent connections - unfortunately, I don't know of a way to fix it.
MikeComment
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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... -
I have this Vizio VO370M TV that I'd like to save because it has very low input lag (as good as the most expensive TVs sold today!, https://alantechreview.blogspot.com/...input-lag.html), but it has a very annoying issue: sometimes the backlight flickers (or is just kind of dim). The flicker is slower than 60hz, so we aren't just talking some kind of motion compensation).
I was hoping maybe it was a power board issue (aka failing caps) but I opened it up and I don't see any that look bad. I have a budget capacitance/ESR meter if it's worth checking those... -
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... -
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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