Dec 5, 2014, 10:25 AM
Post #1 of 1
I'm trying to fault find down to component level on an LG 50PC1 JO12B power board.
LG50 PC1- psu keeps blowing fets
The fuse blows on the board and also trips the house breaker on start up. I've removed 2 banks of fet's and changed 1 fet which had blown. Refitted and tested but now all fets in 1 bank have blown. I've tested all major components around the fets on the board without finding any faulty components.
I've connected to a series lamp test before connecting to mains on both occasions and the lamps come on and off with the relay operation exactly like a working psu.
Any help or advice would be much appreciated.