lg tv mod, 14fkr3b-l2 burns the horizontal,
Good morning friend, God take care of you a lot, the B + brand 134 volt, without the fly back, after 2 or 3 minutes it will protect itself, discharge source filter and repeat the same. but the regulator came cracked, and I don't see its nomenclature well, which is why it was the str w6753f which is the regulator of this tv,
GOOD DAY, friend I measured the B + and it measures 134 volts, without the flay back, the 5volts appear on the push-buttons, after 3 minutes the source filter is unloaded and the process is repeated, that volt, of B + I think it is very high , that I may be uploading it, if I don't have the flay ,,, connected to the card, thank you ,,,, blessings
FRIEND, HPIEDR.Good day, and GOD takes care of you a lot, friend disconnect the flay back and measure the B + and give a value of 134 volt, the voltage of 5volt appears, for the power, after 3 or 5 minutes it turns off and discharge the large filter of the source and the process is repeated several times, I think that volt, of the B + is very high, what should I do, because the damage was caused by a high envelope in the supply network,
GOOD DAY, friend, this TV has damaged a high volt envelope in the home network, I arrive with the broken str, I don't know the reference that this TV uses, in the workshop I mount the str w6753f, but I don't know if this is the one It is giving me 134volt, in the B + that I think is very high, and if that regulator serves me that this voltage will be rising, eye I have the flay back disassembled from the card,
ok, eventually you could assume that the source was damaged because the voltage was raised, it could be due to causes external to the TV or because capacitors were devalued in the hot or hot part, or inside the source, check and also verify the control part of regulation that takes the references to the optocoupler
friend, the voltage I measure in the B + is 134volt, with the flay back removed, the 5volts appear on pushbuttons, the pulse to turn on, after approx. 2o5minutes, it goes off, I unload the source filter, give power and start and so it is repeated several times, that I am raising that B + voltage because the damage was caused by an overvoltage in the 113volt network, FRIEND I do because I am already engaging in that damage