So I have had this m550nv led tv for a while. I can't figure out what's goin on here. So plug it in vizio logo flashes for a little bit then solid orange. Press power button and tv turns on. The backlight kicks on and stays on. But I get no picture. T con is getting 12v on each side of the fuse and 5v on each side of the fuse. They don't have a service manual for this that I know of. I really need some guidance.
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Re: Vizio m550nv really need some help.
I checked all voltages on power connector on power supply. I'm getting 12v and 5v and 18v where its labeled. One question is what does pwm stand for. Cause I get a reading of 2.958v dc. -
Re: Vizio m550nv really need some help.
PWM will be for backlight.
Have you tried running T-con with only one ribbon at a time?
Tried getting sound by fiddling with buttons?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 m550nv really need some help.
I tried to get sound it only had one button that rotates. No sound. I unplugged one of the ribbons that went to the panel and no change. I'm still wondering if it is the t con though from this. http://www.tomshardware.com/answers/...und-image.html.Comment
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Re: Vizio m550nv really need some help.
Question. On one of the regulators that's on the t con. It's got the one big tab and then a leg on the left labeled adj for adjustment pin and the middle is not connected to the pad and then the right leg is connected to the pad on the pcb. Is normal for the right pad to read 3.28v and the middle pad reads like 1.28v and te adj reads nothing 0v. Those are not exact readings but very close. I can get actual readings later tonight an post a pict of it.Comment
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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... -
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... -
Bug looks like hardware so thought I posted it here. Exact same behavior on 2 different model 4K Vizio TVs running their SmartCast smarttv software. After launching youtube app, press vizio button on remote to return to the smarttv menu, once in awhile, a column of bad pixels will show for few seconds on the left hand side.
It seems the vizio software is reinitializing hardware when returning to the smarttv menu. In general, SmartCast software isn't very good. Also will randomly (relatively infrequent) get no network connection when on wifi and require reboot.... -
Hello everyone, I'm trying to find some service manuals or schematics for a vizio e55u-d2 55 inch tv that just conked out the other night. It has no power whatsoever.
Have tried all the reset process that vizio had.
Any Insight to this would be great and appreciated. If you all think it's not cost prohibited to fix let me know. known thank you and have a wonderful day.
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