TV will not power up. no picture red light blinks
SOURCE: samsung tv wont turn on
I got a manual for this set, pulled the power supply board to find the STK-X6545 regulator. After reading another post - to look for the -20 DC on the convergence board, reinstalled the power supply, and pulled the 20 volt supply off of the convergence board. It then came on, without convergence of course. So I got brave and reconnected the convergence - and now FM ! the set is working. I hate when this happens. I do notice that the convergence IC'c run very hot. I have a feeling this is going to go out again, and I will replace the convergence board if it does. Thanks for your suggestions. Samsung must have changed the part number several times on this part, as I cannot cross reference the number that is currently installed. I must assume that the Parts Depot number is a direct replacement ? Thanks !
SOURCE: tv wont work
A VERY COMUN PROBLEM WITH THIS TV IS THE CONVERGENCE IC STK392-040 AND 2 RESISTOR 2.2 OHM
SOURCE: tv red light blinks off and on. Unplugged for an
Replace Both of your convergence ICs one is bad ,but replace both STKs big black ICs also CK two resistors in same circuit 2.7ohms
SOURCE: no video TX-R3079WH
I wish I knew the Answer mine does the same thing and it started happing just after the warrannty went out. Please I need help and direction.
SOURCE: No picture no sound. All three lights blinking off
Hello,
The issue you describe is consistent with a power supply board issue. This is the board where the AC goes to.
I do not think it needs replacement, rather some defective capacitors are causing this issue.
Open
unit up and take a look at the power supply board.You will probably see
one or more electrolytic filter capacitors that are bulged up in the
top-not perfectly flat like the others.
The value of these
capacitors will be different, most likely they will be somewhere
around-820 to 2200uF/25 V( or /10V sometimes)
You
can replace them with same values but I would recommend the voltage
rating to be higher(like 35V for an original 25V) for reliability
purposes.
What happens is,these bulged top capacitors will cause a
low and unfiltered DC voltage=main board will malfunction(the relay
will keep clicking until the caps are holding enough charge to bring the
voltage up over a threshold point).
You can buy these capacitors
at any Fry's or Radioshack store or you can order them online at vendors
like "mcmelectronics.com"(look for electrolytic capacitors).
After replacing these capacitor(capacitors) most likely the normal operation will be restored.
Note: There
may be also some other causes for this symptom ,like a defective T con
board ,or main board,but the bulged top capacitors are the most common
cause for this issue.
If you don't know about TV repairers, take
the TV to the nearest repairman to fix the fault for you. Also, note
that TV stores a lot of current, so wait a while before opening the TV
back cover.
I hope this helps.
Good luck.
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