Re: Samsung Syncmaster 931BF - full white screen

Check the solder joints on the rectifying diodes and capacitors. If a joint goes bad, you may still get the proper voltage on your meter but then you are putting a load on your filtering capacitors - hence one of the reasons the caps go bad! Recently fixed a 931bf and a force feedback joystick - both had bad solder joints. I'm anticipating a future cap job for the 931bf.

Duke7213

Re: Samsung 931BF, the infamous "two seconds to black" problem.

My monitor would stay on at first for about 20 minutes then shut off. The problem gradually got worse and the monitor would no longer stay on for more than a few seconds. I thought for sure it needed new caps so I bought a cap kit. I removed the power supply and visually inspected the capacitors and they appeared to be fine. I figured one must still be bad but I took a closer look (with a magnifying glass) at the board looking for weak solder joints. Sure enough, I counted 12 joints that had the infamous solder...

Re: Samsung 931BF

My monitor would stay on at first for about 20 minutes then shut off. The problem gradually got worse and the monitor would no longer stay on for more than a few seconds. I thought for sure it needed new caps so I bought a cap kit. I removed the power supply and visually inspected the capacitors and they appeared to be fine. I figured one must still be bad but I decided to take took a closer look (with a magnifying glass) at the board looking for weak solder joints. Sure enough, I counted 12 joints that had the infamous solder "ring" indicating the joints...