Picked up a 19" Murphy LCD tv today, turns on and produces just sound. Checked for 2 seconds to black but it appeared that the CCFLs weren't lighting at all.
Checked power going to inverter (pcb used is a FLY-IV190411 REV:1.0) found 12vdc and 4.3vdc so assumed power was getting there (this set uses a 12v brick type PSU)
Looked closely at the inverter and found a SMD fuse, this was blown. Checked every semiconductor on the board, also checked transformers all showed ok - no shorts so I fitted a replacement fuse (very fine piece of wire, approx half as thick as 1A fuse wire) and the set it now working.
My question is, there is no rating marked on the PCB - what value of fuse would be a sensible choice? I'd like to put a proper fuse in the inverter before I sell it on.
(stock photo attached)
SMD fuse is at 1 o'clock of the electrolytic cap beside the power connector.
Checked power going to inverter (pcb used is a FLY-IV190411 REV:1.0) found 12vdc and 4.3vdc so assumed power was getting there (this set uses a 12v brick type PSU)
Looked closely at the inverter and found a SMD fuse, this was blown. Checked every semiconductor on the board, also checked transformers all showed ok - no shorts so I fitted a replacement fuse (very fine piece of wire, approx half as thick as 1A fuse wire) and the set it now working.
My question is, there is no rating marked on the PCB - what value of fuse would be a sensible choice? I'd like to put a proper fuse in the inverter before I sell it on.
(stock photo attached)
SMD fuse is at 1 o'clock of the electrolytic cap beside the power connector.
Attached Files
Comment