Samsung TV model CT-5066VBC does not turn on and with a hum
Hello, notice that in the 125V line where you changed the capacitor if I am not wrong that it is the one that goes to the fly back pin 9 is the diode D406 I think it is R2KN that is not short.
I eat them friends, check what the friend Carlos Quiroga remembers me, and the diode is fine. Then choose to reconnect the TV the TV began to hum and turn on the bulb in series, start measuring voltages at the source using the large filter negative and start with pin 1 of the SMR4000C, moving to pin 2 when placing the tip of the test I noticed that the bulb was beginning to decrease the intensity, I gave several touches with the tip and somehow removed the buzzer and turned off the bulb, measured the voltage on pin 3 and got around 59 volt on pin 5 I got -9volt in others
Note that pin2 joins the 6 of HC801 which is the control of the SMR, note the source capacitors that may be causing the problem.
ok carlos, check that line and ok, but you mentioned me the HC801, look for information about it and found that it has an 8.2volt zener internally between legs 2 and 3 of it, if it is short it causes many problems (http: //www.guiatecnica.webs.com/BOLETIN%2014%20-%20COMO%20SE%20REPARA%20EL%20MODULO%20HC801%20DE%20SAMSUNG.pdf) on this page, and it is actually among those pins a short, here already the stores selling parts closed, I had to wait until Monday to buy a zener diode to place it on the outside, if you have another accessory let me know
HIS-0169C.pdf [209.15kb]