got this model and am trying to figure out what is going on. im thinking ysus?
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Re: vizio plasma help? p50hdm
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Re: vizio plasma help? p50hdm
This is a very common buffer fault on these model. There is mosfets that short on the buffer board. If you search this forum you will find many others with the same fault.Comment
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Re: vizio plasma help? p50hdm
You talking about the buffer boards connected to the ysus?Comment
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Re: vizio plasma help? p50hdm
I checked the buffers they seem fineComment
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Re: vizio plasma help? p50hdm
I second the buffer opinion. And from the picture and personal experience, I'm guessing on the lower buffer. Double check the fets on that one. All three will show shorted because they are connected in parallel. You'll have to lift a leg on each to figure out which one it is.Comment
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Re: vizio plasma help? p50hdm
You can also try disconnecting the jumper between the two buffers to start. Power up the TV with only the upper connected. If the lower is bad, you should get a picture on the top half of the screen.Comment
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Re: vizio plasma help? p50hdm
It is definitely a buffer fault and usually pretty easy to fix by replacing those six surface mounted FETs on the buffer board.
But don't delay as leaving it like this can eventually kill the IPM which is NOT an easy fix.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 plasma help? p50hdm
tom can you show me how to test them i followed another link on coppeal tv repair blog on how to test the buffer boards and they seemed fine tested 2 waysComment
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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.
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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... -
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....
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