Hello I have a Samsung UN55MU630DF television. I have tested the power supply and getting good reading on my voltages. 12.2 and 3.34. I replaced the main board because initially it would not even come on. Now the back lights flash on and off in a cycle. No T-Con but did replace ribbons from main to panel.
Un55mu630df
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Re: Un55mu630df
Can you give the voltage readings on the 12 way connector CNM803 (blurry so hard to read) and the legend name alongside it.Willing to help but I'm no expert.Comment
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Re: Un55mu630df
CNM803
Pin 1 - .01V
Pin 2 - 3.21V
Pin 3 - 12.67V
Pin 4 - 3.47V
Pin 5 - 12.67V
Pin 6 - 3.15V
Pin 7 - 12.67V
Pin 8 - 4.41V
Pin 9 - 12.67V
Pin 10 - .01V
Pin 11 - .01V
Pin 12 - .01VComment
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Re: Un55mu630df
Can we please get the name of each pin?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: Un55mu630df
So ALL the control signals are all stable while the Backlights are flashing?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: Un55mu630df
Try these readings again, need them with tv plugged in and then with power switch activated, see if any change value when you hit power button, report findings.Comment
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Re: Un55mu630df
Looks and acts like mainboard but seeing how bad these samasungs are, I think it's the powersupply.Last edited by nomoresonys; 05-09-2018, 09:22 PM.Comment
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Re: Un55mu630df
But as I asked in post #9, are your sure that the control Voltages (not the A13V) are stable?Last edited by budm; 05-09-2018, 09:48 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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