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Old 01-26-2022, 11:42 AM   #1
Xristakis795
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Default Samsung UE40C6600 problem with power supply

Hi to all
i have the above model of tv
It has power supply bn44-00355a
the problem is it burns the two mosfet TK8A50 page 5 of service manual
I change the two mosfets after measurements I made without being able to find any other problem and again burns the new 2 mosfet
can any of you help me figure out where these two components can burn?
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Old 01-26-2022, 01:10 PM   #2
nomoresonys
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Default Re: Samsung UE40C6600 problem with power supply

Can you post the service manual so we can see what you are seeing?
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Old 01-26-2022, 01:20 PM   #3
R_J
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Default Re: Samsung UE40C6600 problem with power supply

You likely have damaged gate drive components, check the DT1 to be sure the drive windings are not open, then check the resistors and diodes DM804 & DM805, you may need to lift one end to check them accurately
You should also check the diodes on the TM801S secondary as one might have shorted.
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Old 01-26-2022, 01:55 PM   #4
Xristakis795
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Default Re: Samsung UE40C6600 problem with power supply

thanks sir i will check it and i will tell you about
as about as service manual downloaded free from electrotanya

Last edited by Xristakis795; 01-26-2022 at 02:18 PM..
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