This unit has a red line and a blue line vertically on left side of screen. Both lines are about 1/2 inch wide. Do you guys think it is a bad panel or left bottom driver?
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Re: Vizio P42HD (Plasma) 2 Vertical Lines
It is most likely a bad panel.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
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Re: Vizio P42HD (Plasma) 2 Vertical Lines
On the bottom of the plasma panel there are some chip on flex ICs responsible for driving the vertical electrodes. These ICs are bonded to flex which is stuck between the two glass layers.
When one of the chips on the flex fails the flex can't be replaced as it's stuck to the panel, so the plasma panel itself is considered failed.
Unfortunately they have to do it this way: as much as I'd like to see removable column drivers, the technology would require 0.1mm pitch connectors for a 720p, 42" display (and even smaller for a 1080p display), which isn't feasible at the moment.
If you post a picture of the fault then I can confirm it. Sometimes bars can be a problem with the X-distribution boards.Last edited by tom66; 01-20-2013, 05:05 AM.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
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Re: Vizio P42HD (Plasma) 2 Vertical Lines
Yes, except with LCD panels in very rare cases it is possible to fix the bonding on the LCD. And lines in both directions are bad, whereas plasma can sometimes be fixed with lines going left to right, though it can still be a bad plasma panel.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
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Re: Vizio P42HD (Plasma) 2 Vertical Lines
Attempting to fix the same issue on the same Vizio set. Came onto this post searching for a solution and wondered if the set is beyond fixing like indicated above. There are 2 vertical red bars,one to the right slightly off center, and near the left most red bar are green and yellow bars.Comment
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Re: Vizio P42HD (Plasma) 2 Vertical Lines
Can we see a picture?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 P42HD (Plasma) 2 Vertical Lines
yes, I will take and upload one now.Last edited by XeoNexus; 02-05-2013, 04:14 PM.Comment
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Re: Vizio P42HD (Plasma) 2 Vertical Lines
Hmm, I have not seen that before. Could you move it to an attachment on the post? It's taking a long time to load. To me, it looks like it could be a y-buffer problem, repairable. Have you tried it with an actual video source?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 P42HD (Plasma) 2 Vertical Lines
original and with a system plugged in.Attached FilesComment
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Re: Vizio P42HD (Plasma) 2 Vertical Lines
I see the red line got bigger. Does this return to how it was if you remove the source?Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
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Re: Vizio P42HD (Plasma) 2 Vertical Lines
The bars change whenever I bump or move the set. No change when using the inputs.Comment
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Re: Vizio P42HD (Plasma) 2 Vertical Lines
In which case, unplug the set (all power off, make sure screen is out, etc.) Look at the bottom of the plasma panel. You'll see some connectors going to the plasma glass, chip on film -- these drive the columns. Unplug each of the connections and re-insert them. May take some tries to get it perfect. Looks like it may just be a loose connector on the buffer connections.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 P42HD (Plasma) 2 Vertical Lines
Ok thanks for the help, I will try that now.Comment
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Re: Vizio P42HD (Plasma) 2 Vertical Lines
No change re-inserting the connections. I might be in the wrong area, but I didn't' see what you described on the bottom. The only thing similar to that were about 10 ribbon connections on the far left side. I tried what I could find, besides the connections from the PSU.Comment
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Re: Vizio P42HD (Plasma) 2 Vertical Lines
Can I get a picture of the chassis? Also, who made the plasma panel in this model? Samsung, LG, Panasonic, ...?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 P42HD (Plasma) 2 Vertical Lines
LG made the plasma panel (PDP42x21000). Sharpest picture I can get with my cell phone.Attached FilesComment
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Re: Vizio P42HD (Plasma) 2 Vertical Lines
OK, the ribbons on this model are hidden behind those heatsinks on the bottom.
You will unfortunately have to remove all of the main board and framing. Then remove the lower heatsinks and reseat every connector. DO NOT power up the set with those heatsinks removed -- doing so will destroy the plasma panel drivers in short order, which are not replaceable (without swapping the panel itself.)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 P42HD (Plasma) 2 Vertical Lines
I'll try that tomorrow and post the results. Thanks again for the assistance.Comment
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Hello, I have a screen in where sometimes when I open it pop-up vertical multicolor lines (I would say the most of them are green). If I tun off and turn on the screen the lines dissapear or if I leave open the screen after approximately five minutes the lines gone. I measured the below voltages on the main PCB and on the T-CON board and the voltages are the same when it doesn’t display the vertical lines and when it displays the vertical lines. Also, I cleaned all the connectors very good with IPA. I moved back and forth the connectors and the COF tabs but the vertical lines didn't displayed... -
I picked up a Vizio E70-E3 for free that shows Vizio logo and then goes to a black screen. Original owner said he started having wifi issues and then he tried to reset the TV and that's when it wouldn't boot up any longer after his reset attempt. I picked up a replacement main board from eBay that matches the same model # board as the original from the TV.
Original main board - Shows Vizio logo when TV powers on, then goes to black screen. Doesn't boot up. No screen issues with any lines on start up Vizio logo.
Replacement main board - Boots up fine, but starting... -
I recently replaced the led backlights with LB65041 LED Backlight Strips and after putting it back together the backlights work but there are only colored vertical lines only in the center of the tv. I can see the Netflix logo (jumbled) after a minute or less the screen went dark. When I turned it on again the lines were back. Then I replaced the t-con board but the same vertical lines in the picture. My question is what is my next step? Could it be a source tab bond issue? A buffer board issue? Could I have loosened a connection to the panel when replacing the backlights? Should I replace the... -
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... -
This is my 2nd broken TV I'm trying to fix and haven't been able to figure out... currently going without any working TVs so am hoping to be able to fix one..
This Samsung PN50B430P2D Plasma has this big block of vertical lines which will fade in shortly after turning the TV on. The lines will sometimes flicker a bit or fade in/out and sometimes it just stays present. The length of time it takes them to appear varies, sometimes its a few minutes and other times it appears immediately after powering on.
I have attached an image of the TV with these bars displaying....
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