Hello!
I have a Samsung 75" UN75F6300AF TV. This thread shows good photos of the various parts, I'll post my photos of my issues which are:
1) Identify what this 'yellow nub' is on the back side of my power supply circuit board. Is it important? where do I get a replacement?
2) find a source / replacement part for this 15D050 thermistor.
3) What is this little black chip? does it look ok? how do I test it/replace it?
4) how else would I troubleshoot a short in the board?
Back story:
Months ago, an LED strip seemed to have gone bad (took a while to understand what the issue was). Then one evening, the TV was on, working fine and then "Pop, Pop, POP! zap" the TV went off. Took out the power supply (BN44-00621C) and discovered an obvious capacitor had blown.
I figured out a good replacement for that, soldered it, and now the fuse keeps blowing, i.e. a short somewhere (replacement fuse is the correct rating and time-delay type). I have visually inspected the board in more detail and discovered a little nub on the back side of the board was also popped off at the solder joint. I am pretty sure it was popped off when I first had the issue. I've included photos of 'good ones' on the back of the board. There are four in total (SP1, SP2, SP3, SP4). SP3 is the one that was popped off. It is located under the TS801CS transformer(?) roughly where the red dot is, but on the other side of the board.
I also noticed later on that the WTR 15D050 thermistor is cracked. Personally I think this may have happened later on e.g. after I swapped out the fuse twice. I think if this was there from the beginning, I would have seen the crack. Where can I buy these? can't seem to find an identical replacement (green, etc) and want to be sure I get the correct one.
The only other thing that visually looked weird was this "chip". Again, on the back side of the circuit board. I have no clue what it is or how to test it. Markings seem to say "YC" and "312". I say it's weird because the solder looks rough, like it was melted and refroze.
So once I replace these/test these, anything else I should do to test for shorts. I've already bought a new power supply and TV is working again. Also testing was done with just the power supply, so I'm pretty certain the short is in the power supply board.
I have a Samsung 75" UN75F6300AF TV. This thread shows good photos of the various parts, I'll post my photos of my issues which are:
1) Identify what this 'yellow nub' is on the back side of my power supply circuit board. Is it important? where do I get a replacement?
2) find a source / replacement part for this 15D050 thermistor.
3) What is this little black chip? does it look ok? how do I test it/replace it?
4) how else would I troubleshoot a short in the board?
Back story:
Months ago, an LED strip seemed to have gone bad (took a while to understand what the issue was). Then one evening, the TV was on, working fine and then "Pop, Pop, POP! zap" the TV went off. Took out the power supply (BN44-00621C) and discovered an obvious capacitor had blown.
I figured out a good replacement for that, soldered it, and now the fuse keeps blowing, i.e. a short somewhere (replacement fuse is the correct rating and time-delay type). I have visually inspected the board in more detail and discovered a little nub on the back side of the board was also popped off at the solder joint. I am pretty sure it was popped off when I first had the issue. I've included photos of 'good ones' on the back of the board. There are four in total (SP1, SP2, SP3, SP4). SP3 is the one that was popped off. It is located under the TS801CS transformer(?) roughly where the red dot is, but on the other side of the board.
I also noticed later on that the WTR 15D050 thermistor is cracked. Personally I think this may have happened later on e.g. after I swapped out the fuse twice. I think if this was there from the beginning, I would have seen the crack. Where can I buy these? can't seem to find an identical replacement (green, etc) and want to be sure I get the correct one.
The only other thing that visually looked weird was this "chip". Again, on the back side of the circuit board. I have no clue what it is or how to test it. Markings seem to say "YC" and "312". I say it's weird because the solder looks rough, like it was melted and refroze.
So once I replace these/test these, anything else I should do to test for shorts. I've already bought a new power supply and TV is working again. Also testing was done with just the power supply, so I'm pretty certain the short is in the power supply board.
Attached Files
). I didn't see any indications of arching on any connectors. I will say when plugged in the TV to see the LEDs that were out (three rows) some of the bad rows had LEDs that were dimly lighting up intermittently (e.g. low voltage?). I really think the issue with having the LED row out for so long caused my power supply to eventually fail, but that's just my theory. 
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