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Old 05-04-2021, 09:09 AM   #1
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Join Date: Dec 2016
City & State: Chennai
My Country: India
Line Voltage: 230VAC 50Hz
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Posts: 15
Default Samsung UN40F6400 No Picture Bad T-Con or Panel!!!

Dear all,
I have Samsung TV, which reboots continuously and I opened the TV and checked for loose connection - disconnect and reconnect all cables.
When I power ON and noticed that its entered into Burn mode (RED/GREEN/BLUE) screen and I turned off and checked the cables again but this time it turned into white screen only. No matter how many times I restart the TV the result is same. But Sound is OK.

Needed your help and expert advise, whether it is the TCON faulty or Total Panel Failure??

TV Model: UA40F6400
T-Con Model: BN41-01939B

Below are the Voltage measurement.

TCON LED status: All 3 Blue LEDs are ON.
Panel: 12.7v
VoffE: -9.5v
Vss: -7.5v
Attached Images
File Type: jpg LED_status.jpg (1.04 MB, 4 views)
File Type: jpg Samsung_UA40F6400_TCon.jpg (935.2 KB, 3 views)
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Old 05-04-2021, 12:12 PM   #2
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Join Date: Aug 2015
City & State: Cardiff
My Country: Wales
Line Voltage: 230V AC, 50Hz
I'm a: Hobbyist Tech
Posts: 6,273
Default Re: Samsung UN40F6400 No Picture Bad T-Con or Panel!!!

What voltage do you have at the Panel_12V point?
Willing to help but I'm no expert.
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