Re: e701i-a3 no picture but backlights
great... $50 well spent
great... $50 well spent
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Re: e701i-a3 no picture but backlights
Lol good to know that this fix is still holding up! Hi all! I'm back from the dead.
I have to report that original Vizio that I fixed last year when we first found this out is still working fine to this day. This Sony 70 inch however recently died. It looks as if the other ribbon drivers on the opposite side went bad. The very bottom ribbon and driver on that side. Since this is a 3D panel same architecture but just a smidge different could have been a factor.Did I leave the soldering iron on?Comment
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Re: e701i-a3 no picture but backlights
I am not sure if this is a problem with the vizio but watching direc tv I get a lot of what looks like macro blocking on dark scenes. It also has sort of a bluish look to it. I replaced my 70 inch rear projection tv with the vizio. I am going to swap hdmi cables and try a blu ray to see if it is still present. But it was bad enough for my wife to comment on how bad it looked. She wanted me to put the other tv back.Comment
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Re: e701i-a3 no picture but backlights
hmmm... what settings have you adjusted? I think "macro blocking" is a "transmission/decoding issue" not usually associated with the display "work". As for color, the first question needs an answer especially comparing to a rear projection tv. :-)Last edited by budwich; 10-10-2016, 06:45 AM.Comment
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Re: e701i-a3 no picture but backlights
I ran DVE calibration bluray disk on both the "standard & calibrated" presets. On nice bright scenes the picture looks great. I am going to make a few changes. First I had swapped out my DIRECTV Dvr that I had originally hooked up to the Sony and had replaced it with one of the mini genie boxes. Also I changed the hdmi cable to a longer one. I am going to put everything back to the way I had it and test it. I will try and get some pics up.
Thank youComment
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Re: e701i-a3 no picture but backlights
Also could it be a t-con board issue perhaps? Before I had swapped out the one mosfet on the original board I had ordered a "new" spare from EBay which should be here today.Comment
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Re: e701i-a3 no picture but backlights
Here is a picAttached Filesif you find these attachements useful please consider making a small donation to the site
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Re: e701i-a3 no picture but backlights
And another. Swapped out direct tv box and used different HDMI cable.Attached Filesif you find these attachements useful please consider making a small donation to the site
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Re: e701i-a3 no picture but backlights
Tried different HDMI ports and also component and still same issue. Almost like the shadow have a greenish sort of tinge and a lot of noise to them.Attached Filesif you find these attachements useful please consider making a small donation to the site
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Re: e701i-a3 no picture but backlights
Just hooked up PS3 and put the Dark Knight on and was same thing. If I set the black detail to high and gamma all the way up it lessens the noise but still noticeable. I will see if the replacement t-con will fix it. Oh and also I have a few of those small white pin dots on the screen.Comment
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Re: e701i-a3 no picture but backlights
Macroblocking is most likely a problem with the main board. I suppose it could be a t-con board but have you tried resetting all the cables? Also the white pin spots. There's nothing you can do about that is a defect in the polarizer is behind the LCD panel I noticed this model as they age gets worse and worse. That was a sharp failureDid I leave the soldering iron on?Comment
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Re: e701i-a3 no picture but backlights
Thanks for the info. I had ordered a spare t-con just in case the original I could not fix. I will swap it out and see. As for cables I reseated all of them. I wonder if the LVDS cables may cause this as well? I ran across another post about on some vizios there was issues with green tinge in the blacks that was due to bad LVDS cables.
Thank youComment
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Re: e701i-a3 no picture but backlights
Could be lvds cable. They seem to affect black areas more than lighter shades but I'm more suspecting main board or tcon. I'm leaning more towards tcon.Did I leave the soldering iron on?Comment
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Re: e701i-a3 no picture but backlights
Count another one fixed. It was the right side on this one. I bought another card & blew the trans. on it then bought 5 trans. so I have the card & 4 trans. left over if anyone is interested. Thanks to all for the generous input.Comment
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Re: e701i-a3 no picture but backlights
Swapped out the t-con with the spare I got from eBay. Still same issue with the shadow/dark area of the picture with the noise. I did a factory reset from the service menu and went through the setup process.
If I set the gamma to 2.4 and black level to high I can clear it up a bit but I do not like the overall image. Also noticed that where the noise is it has a bluish tinge to it. If I go into the color correction and adjust I can clear it up some as well. I am wondering if this is a panel problem now?Comment
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Re: e701i-a3 no picture but backlights
Here are a few more pics. Also I just noticed one thing. The replacement board is labeled ZH and original is a ZG in the part #. It almost seems like the replacement is worse with the noise.Attached Filesif you find these attachements useful please consider making a small donation to the site
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Re: e701i-a3 no picture but backlights
Here is another pick of Avia calibration DVD that shows more of the issue. If you notice the bar that is suppose to be the darker shade of black has more of the noise as bad.Attached Filesif you find these attachements useful please consider making a small donation to the site
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Re: e701i-a3 no picture but backlights
Going through the thread again I came across this posting at #397.So I thought I would try and fix another 70" as I had success the first time but I have ran into a problem, quick version.
after removing tabs, new t-con tv is now working again but the screen quality isn't very good real pixelated / gassy looking pictures attached. I have tried cleaning all cables changed setting but nothing seems to be helping. 
Thnaks
This is exactly what I have going on. He tried a replacement mainboard and still no change.Last edited by splatee; 10-13-2016, 05:55 PM.Comment
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Re: e701i-a3 no picture but backlights
That's odd the only other thing I could possibly think of is dry cleaning the contacts of the lvds cable with denatured rubbing alcoholDid I leave the soldering iron on?Comment
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All left and right refers to looking from rear of TV (or looking from front with TV upside down)- TV came with vertical bars and no image. Found faulty TVS on left buffer board. Also replaced T-Con (may have damaged the original while hot air removing components, board has slight warp) and have full image but few horizontal lines on the screen. Some of the lines appears to be 2 pixel tall while others are 1 pixel tall.
- Disconnecting left and right buffer board potentially reveals problems on both sides with different signals (unless this T-Con require jumper like Samsung FB_TRDY1&3) Fault
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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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Hi, this is my personal laptop, which the original board (lets call it Board A) blew up PU8700 (TPS51486), making a hole on the board, i had left the laptop at my desk one day with the battery fully charged and didn't touch it for a week, but when i tried to turn it on it didn't
Thought the battery was dead, so i plugged in the charger then tried to power on, the power LED blinked once, charged LED still orange, unplugged the charger, plugged in again and I noticed the "magic smoke" smell, so i unplugged the charger, removed the back cover and saw the blown IC (the "magic... -
Problem
This is an LG edge LED lit LCD Display. The LEDs are on the bottom edge of the display. There are 2 bars (left and right) Each bar has many LEDs and a 6 pin connector. Each pin drive several LEDs thus is the highest current flow / heat junction. The weak lead free solder gradually fails with thermal expansion/contraction cycling and increases resistance. PSU will compensate up to a point, then when the current is too high, PSU just shut down the backlight causing a dark display. I have even seen one which the connector just fell off as solder points became completely detached.... -
Hello all ~
Hope this finds you well. This LG 82UN8570AUD (April 2021 model) 4K UHD television has full audio capabilities but video is compromised / problematic.
When I picked up this large LG tv it had a full black screen upon startup. Previous owner said it just went black one day. No popping sound or anything else of note.
I got the display to work by taping off several traces of the right-hand side ribbon cable on the TCON that leads from TCON to PANEL. However, despite dozens and dozens of attempts to find the right combination / range of traces taped...
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