Chosen Solution
Hello, my Samsung LED TV stopped working, when i try to turn it on the relais just clicks on and off and after about 15 seconds clicks on and off again and again. I read about bulged capacitors on the power supply board but mine looked fine. Standby voltages on the power board were at 9V which was written on the board so that is fine. When i unplugged the T-con and mainboard and connected the tv to power the backlight came on. When i did this with a connected t-con but disconnected mainboard there was just one click and nothing else happened, when I then reconnected the mainboard the clicking on and off started again. So I think it is a mainboard Issue. My manboard numer is BN94-07833B (BN41-2356B) and i can not find any plans for that. I read about the hdmi switching IC going bad on some other mainboards, but there were no shorts that i could measure on the IC. I tried a EEPROM reset but nothing happened when i connected the SDA pin to VCC. Does anyone have a clue where i could start? Is there any common issue? Or at least some kind of service manual for the tv? thank you
So you are talking about the Silicon Image chip in QFP package ?
@paddz123 yes it could be a main board error but you still need to give us the other voltages you measured on the board. errors like this can also be coming from the T-con board. Check the power on it as well. Also, post some pictures of all of your boards with your question. That way we can see what you see. Adding images to an existing question
Hi, I know this thread is old, but I have the same TV with the same symptoms and was wondering, how this thread continued.
Hi Paddy, thanks for getting back this quickly. When you say HDMI chip, do you mean the main SOC below the black heat sink ? If so, where did you get the replacement Chip ?
And one more question: How did you know it was that IC ? Did you observe any shorts, e.g. on the power supply lines ?
