Re: Samsung power board BN96-03775A




Thanks for your reply, Lota. At Pin VCC 8 of TDA4863 there are 9.48v, as in the emitter of QS802: Do you recommend me to check QS802? Ok to try all the resistances you indicated in the diagram....

Hi guys, I'm trying to fix a Samsung LCD TV board.
Power Board is Model BN96-03775A.
When I connect to the 220v mains, the blue light flashes.
I tried to measure the voltages: 24v, 13v, 12v and 5v are missing but 5.8v standby is present.
I removed the card from the TV and connected a 1000 ohm resistor between STBY and PS / On to simulate switching on with load.
On the CP812 terminals there are 309v so the PFC is not working.
There are 396v on the cathode of DS801.
On the cathode of DS803 there are 33v and on DS802 12v.
I checked diode...

Re: New Members - please post your introductions here

Hi everyone, my name is Nicola, I am 50 years old and I write from Italy (Florence). I am passionate as a hobby to repair TVs, cards and VCRs. I am very happy to add myself to your community.