Searching shows this model suffers from failing AS15 gamma IC chips. My TV shows 14 blinks. I disconnected the LVDS connector and the TV powers up with a green front LED and backlight coming on. I checked the Tcon board for fuses but couldn't find any. Would a bad AS15 chip produce this error code? There are a few sellers on ebay with a repair service but it looks like all they do is replace the AS15 chip.
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Re: Sony KDL-40Z4100 14 Blinks Tcon Error
Don't think bad as15 would cause not to start unless shorted. Problem probably elsewhere on the boardI assume no responsibility for any stupid suggestions I might post. -
Re: Sony KDL-40Z4100 14 Blinks Tcon Error
The shopjimmy repair kit shows a fuse as well as the AS15. Will look for it.
http://www.shopjimmy.com/sony-55-40t...repair-kit.htmComment
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Re: Sony KDL-40Z4100 14 Blinks Tcon Error
What does it do when you leave lvds connected but remove ribbon cables between t-con and panel?Proud owner of dozens of broken TV's and many,many,many boards.
Our website and passion:http://hollenhundshepherds.com/Comment
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Re: Sony KDL-40Z4100 14 Blinks Tcon Error
Gotten a little further since I found the service manual online. There is no troubleshooting guide or legend for the blink codes but schematics of the main board. Nice to be able to search net names and reference designators on both the schematic and component layout diagram.
I found the fuse F101 which is located on the far side of the Tcon opposite the connector. It tested good but only measured about 1.9VDC on both sides. I got the same voltage on pins 47-50 of the LVDS connector. I should be getting 12V. REG12V on pin 7 from the PS board measured good and goes through an onboard fuse F1422 and is switched with a FET Q1423 on the main board by a control line on the processor. With the LVDS connector unplugged, I got 0V at the TCON supply voltage.
Will check F1422 and Q1423 as next step. Wondering if the fuse in Shopjimmy kit is for the main board instead of the TCON. Stay tuned.Last edited by neilc6; 01-14-2018, 11:39 PM.Comment
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Re: Sony KDL-40Z4100 14 Blinks Tcon Error
F1422 was open and I replaced it with a fuse from a KDL-40XBR6 board which had a 14 flash code as well. TV now powers up but has gamma issues so the AS15 chip needs to be replaced as well. Appears the shopjimmy repair kit has the right parts.
Found this thread which applies https://www.badcaps.net/forum/showthread.php?t=13751Last edited by neilc6; 01-15-2018, 12:12 PM.Comment
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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... -
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... -
The TV shows a black screen with no image.
TCON ribbon connectors were disconnected individually for image and there was no half image even.
Later both ribbons were disconnected and TCON voltages were tested.
12V, 3.3V, 1.8V were seen present but VONE signal reads 0V.
There is also a short to ground in this circled inductor.
Is this a TCON issue or something else ?... -
Hi everyone. First post on Badcaps!
I am trying to fix a Sony 940E from 2017 that either starts normally (and works perfectly until turned off) or goes straight to the 6 blinks error code without showing anything on the screen. It is frustrating to know that it can still work perfectly but is barely usable because of the difficulty starting it up. I am willing to try to short the BL_ERR but I would like to avoid that if possible. Does anyone have a view on this? Thanks a lot.... -
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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