Re: PSLF201501B BN96-03057A Blown Capacitor

UPDATE: Replaced the thermistor and fuse. There was 6V on the standby. Installed the board in the TV. When I turned it on, the MOSFET shorted and caused a bit of smoke and blew the fuse. I have replaced the MOSFET and fuse. Confirmed there is 6V on the standby. Installed the board back in the TV.

Now the standby light comes on but immediately goes off. Pushing the power button does nothing.

On the bench, the 6V is constant. I am concerned that it may be something in the main board now.

If I...

Re: PSLF201501B BN96-03057A Blown Capacitor

You were spot on with the 5D-13. Ordered a couple from mouser. Should be here in a couple of days.

Re: BN96-03057A Blown Capacitor



Thanks RJ. FS802S is ok. I pulled QP801S out of the circuit and tested it with my component tester, which shows it is good. I did the multimeter test and it checked out good. I also pulled out RP819 - it is not open but has 0.3 ohms resistance. Is that good?

I looked at the datasheet for QP801S to learn more about it. I found some test circuits I am going to breadboard up to learn a little more before I stick it back in the board.

One thing I could not find information on is that the drain(2) is shorted...

Re: BN96-03057A Blown Capacitor



Thank you, but I did not change NT811S. Pretty sure it is a nonpolarized cap....

My TV uses the board BN96-03057A, model PSLF201501B.

The original issue was the standby light would go on then immediately turn off - TV would not turn on. Pulled the board to found 3 caps bulging so I replaced them.

After replacing the caps and confirming the fuse was good, I plugged the board into the wall. At that point the board was not generating power. Checked the fuse and it was blown.

I replaced the fuse a second time, plugged it in, and poof - cap NT811S made quite a pop! In hindsight, I had read somewhere that you can use a 40 watt bulb in...

Re: New Members - please post your introductions here

Hello. I am fascinated with the challenge of fixing things. Especially things with schematics. When I was a younger lad, I did board level repairs before getting into software development. Now I am tinkering with some Monitors that no longer work and having fun learning new stuff. Here is the challenge I am working on now......