Hi everyone
I bought a non-working 50" PG Plasma for real cheap, just for some fun and hopefully some learning. My background is technical IT, and in fact it's the first time troubleshooting a TV.
Problem: Power LED turns on, then off after a second or two.
So I've started with identifying and familiarising myself with the boards. Tested PSU OK. Visual inspection for burnt down components, or bulged caps... all looks fine. TV is however very dirty as it was in a restaurant, so it's difficult to identify burnt components.
Since LED turns off after a second, I thought there must be a short circuit somewhere, so I've started disconnecting boards. Power stayed on as soon as I've eliminated the YSUS (EAX64282201).
I couldn't see any fuse on this board so I started testing the mosfets for short to ground. Since I never did it I am not sure if I'm actually testing them correctly.
First of all I only have a DMM. So my first question for you would be: do I have to remove the mosfets out of the circuit to test properly, or can then be tested in circuit?
Thanks
Photo 1
Photo 2
I bought a non-working 50" PG Plasma for real cheap, just for some fun and hopefully some learning. My background is technical IT, and in fact it's the first time troubleshooting a TV.
Problem: Power LED turns on, then off after a second or two.
So I've started with identifying and familiarising myself with the boards. Tested PSU OK. Visual inspection for burnt down components, or bulged caps... all looks fine. TV is however very dirty as it was in a restaurant, so it's difficult to identify burnt components.
Since LED turns off after a second, I thought there must be a short circuit somewhere, so I've started disconnecting boards. Power stayed on as soon as I've eliminated the YSUS (EAX64282201).
I couldn't see any fuse on this board so I started testing the mosfets for short to ground. Since I never did it I am not sure if I'm actually testing them correctly.
First of all I only have a DMM. So my first question for you would be: do I have to remove the mosfets out of the circuit to test properly, or can then be tested in circuit?
Thanks
Photo 1
Photo 2
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