Hello all, i just received this led tv with double image, but am confuse on which point to cut, here is the pictures of the T-con and image of the fault, can anyone please show me with picture
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Re: Sony Kdl-55ex721 double image
you don't cut any of those... you use a piece of tape and place it on a set of contacts at the tcon board on a connector going from the tcon to the panel. This basically acts as a "cutoff" of signals that go to the panel which then might help get a better picture. This process is "trial and error" but because you are using a piece of tape, it causes no long term problems and can be repeated as often as necessary. Cutting those cables picture is a permanent one time thing and is a BIG GAMBLE.... don't do it. -
Re: Sony Kdl-55ex721 double image
Cut signals ckv1-ckv2-ckvb1-ckvb2-stvp on lcd boardComment
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Re: Sony Kdl-55ex721 double image
What are you talking about?
How do you know that cutting these signals will fix this TV? Where did you get this information? Not doubting you, but I am curious because I have never heard of this fix for such an issue before.
Please share your information or source.Comment
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Re: Sony Kdl-55ex721 double image
What is the LCD panel model number? T-CON P/N?
The tape off method is to tape off the pin to the COF GATE drive.Last edited by budm; 03-01-2019, 12:31 PM.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809Comment
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Re: Sony Kdl-55ex721 double image
Nice job, did you get a picture of your cuts to show us?
Last edited by nomoresonys; 03-02-2019, 02:18 PM.Comment
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Hello all. 3 years back, with your help, I replaced the LEDs on this TV. It's been working great. Yesterday, I turned it on (garage TV), and it has blurred horiz / vert lines as you see in photos. Definitely no physical hit or damage. Top 1/6th of the screen is perfect. Could it be main / TCON board? No tabs to cut on this model. Thank you...
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Hello everyone,
I've recently been given a Sony 8k Z8H. It's got a white screen with two vertical black bars. At times it's given me the 5 blink Tcon code. Testing voltage on the Tcon I can see some low or missing voltage. I've done a basic visual check of cables and the COF. Not seeing anything obvious. The original Tcon seemed to have good caps until turning it over. On the bottom I found maybe 10 caps with both sides of the caps shorting to ground. I thought ok these caps and likely other components on the Tcon are shorted so let's try a replacement Tcon. I just received the... -
Hello team,
I'm back with another tv and another problem.
I try to improve my knowledge on fixing TV, and all technics used until now are not fixing correctly the problem.
First, reboot issue, I use tape Method to find out the right side that cases the issue.
Then using this it's working for quite 1hour30, then at some point of time the image became double on the bottom for half the screen.
Then double image reduce in height and move to the top.
The image is like folded on around 1cm and the bottom has been moved to the top by 1cm.
When I... -
Hi,
i want to repair a Sony KD-75XF9005 TV that initially only showed a grey picture.
Backlight seems to work, Sound (Setup menu after reset) works.
If i dissconnect the left FFC cable from TCON to panel i have half a screen on the right. If left cable is connected always only the grey screen.
Interchanged the cables, its always only the right side that is working. Always grey if left side is connected.
With my small knowledge i would think at least the cables are good.
Can this happen because of a bad tcon board?
Or is it always a bad/shorted... -
Hi,
I have this problem with my Sony 55' AG9.
It flashes 4x.
I have found the service manual, and seems it is the TCON.
Before I buy a TCON can someone check the vid?
Thanks in advance!...
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