TV was fine last night, woke up this morning and turned it on and got this. Someone told me it needs a TCON board however it looks to me like it doesn't have a TCON board, ribbons go right to mainboard, thoughts?
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Re: UN55KU6500FXZA White screen
Is the TCON built into the mainboard? -
Re: UN55KU6500FXZA White screen
can you show us the whole boards at the back side of the tv.. to be sure there are no t-con.Comment
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Re: UN55KU6500FXZA White screen
Here it isAttached FilesComment
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Re: UN55KU6500FXZA White screen
put LVDS back be sure of them not damage.. then try hard rest from service menu... not from normal installation menuComment
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Re: UN55KU6500FXZA White screen
Not sure how to do a hard reset from service menu? LVDS Low Voltage ? ?Comment
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Re: UN55KU6500FXZA White screen
I had the same problem on one of the TV's i fixed .. IT was the Gamma controller chip , TCON is probably soldered directly on TV , or maybe its part of the main board, not sure.. I would check for VGH test points, there should be descending/rising voltage in order of pins depending from which way you test...Also 1 thing that you can try is ,when the tv is turned on , go with the back of your hand over the mainboard( NOT PSU
) and check to see if anything is burning hot. if not, i would dissasemble the TV completely to get to the driver board and see if there is anything wrong there
Last edited by sigmeyer; 11-20-2020, 04:50 PM.Comment
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Re: UN55KU6500FXZA White screen
I haven't done anything yet, I am still a newbie at this stuff so please cut me some slack if I don't understand.Comment
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Re: UN55KU6500FXZA White screen
There was an update available, completed a hard reset per instructions online for this particular TV. Completed update as well. There is only 2 boards in this TV, mainboard and power supply so I can only assume main is bad. I'm just doing process of elimination, all the LED's are lit up, it powers on and off like it should, main/tcon combo sounds like the only realistic path to take.Attached FilesLast edited by zukdj; 11-20-2020, 07:10 PM.Comment
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Re: UN55KU6500FXZA White screen
This is the new age Samsung s*itty mainboards with tcon integrated, it is probably broken the chip that stores the gamma values, since a reprogramming of this is almost unpossible due to lack of skill and datasheet, so the only way is to.change mainboard. bye.Comment
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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... -
To ask here... I have few devices with white screen problem, actualy nokia 2220 and some fuji? camera, and try to understand what is common problem to cause that issue.
Yes, both devices work everything else probably ok, I mean, I hear intro melody and keypress click sound, DTMF tone, power on off... all ok.
On desk is nokia 2220 slide, and I check all screen connectors and components arround it, measure voltage drop, but all looks ok. I suspect on slide flex cable, but it look ok and white screen is not interupt while flexing board, pushing conectors, and sliding up down. In attachment... -
Hello everybody! Posting this in hopes somebody has some expertise that leads to a clear path of troubleshooting that saves me a lot of time!
My macbook has the flex cable problem, the one that prevents the screen turning on. Ive been dealing with this for the last 3 years. Last year it went dead and I managed to fix it following youtube tutorials. But my fix wasnt the best, the problem returned a month later. This week, it went dead again. I again tried to fix it.
This time the original cable broke too close to the screen, it can't be fixed without tearing the screen... -
Just bought this for 10 bucks yesterday hoping to fix it. The guy said water dropped inside from a dehumidifier hose and it started showing black and white vertical bars then went blank. When I got it home and turned it on it came on fine and displayed correctly but I was noticing faint vertical bars in the image. After a little bit I turned it off and back on and it was a black screen again. I opened it up to check for water damage and corrosion but didn't find anything of the sort. I cleaned the ribbons anyway and reconnected them but still got a blank screen. If I disconnect the right side... -
Hi,
i have a 65 Panasonic TX-65HX710E using vestel 17MB170 main and Lg tcon.
Few drops of water fell probably near COF and have no display. Tried removing tabs but no.part of display present as if tcon fuse open. However 12v is present and tcon can be felt warm enough that supplies are present. Backlight and sound ok.
Anyone knows if this TCon 6870c-0805A has any special test pins for rgb test?
Appreciate your help....
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