LG 50PH670S no video only audio

[xblood88]

Re: LG 50PH670S no video only audio

because if I let the current pass I hear a noise and when I remove it I find it interrupted. he also has oxide. I wanted to change it but I don't know what values it has. looking on the internet I can't find the number written above

[dick_barton]

Re: LG 50PH670S no video only audio

You can use you meter set to ohms and check the primary and the secondary winding resistance.
Use you multimeter and check the diodes in the area of the transformer. There may also be a bridge rectifier close to the transformer you could check

[xblood88]

Re: LG 50PH670S no video only audio

You can use you meter set to ohms and check the primary and the secondary winding resistance.
Use you multimeter and check the diodes in the area of the transformer. There may also be a bridge rectifier close to the transformer you could check

are the transformer interrupted how do i measure the resistance? and if I measure the ohms then how do I understand how many volts it is?

[dick_barton]

Re: LG 50PH670S no video only audio

Resistance measurements are taken with the set powered off and meter set to ohms.
There should be at least two sets of the transformer pins connected together by the windings.