Hi Guys,
I was helping out my mate to deal with some CCTV repair jobs, i came across faulty camera which i discovered had blown fuse in its PCB circuit, however the power source supplying 27AC was live. While power connected to the camera, I removed faulty 1.6amps glass cartridge type and replaced it by 4amps (the lowest i had) then next second some micro component on the PCB set itself on fire and blew up with smoke, it of course blew my 4amps fuse too - i was shocked by what just happened. Nothing to loose i disconnected power from the camera, installed another 4 amps fuse, connected power and cameras worked like new.
My friend suggested that the blow was due to oversized amperage fuse used which probably upset that particular part of PCB.
So my question, is that possible? If so, can you explain it to me? Please educate!
I was helping out my mate to deal with some CCTV repair jobs, i came across faulty camera which i discovered had blown fuse in its PCB circuit, however the power source supplying 27AC was live. While power connected to the camera, I removed faulty 1.6amps glass cartridge type and replaced it by 4amps (the lowest i had) then next second some micro component on the PCB set itself on fire and blew up with smoke, it of course blew my 4amps fuse too - i was shocked by what just happened. Nothing to loose i disconnected power from the camera, installed another 4 amps fuse, connected power and cameras worked like new.
My friend suggested that the blow was due to oversized amperage fuse used which probably upset that particular part of PCB.
So my question, is that possible? If so, can you explain it to me? Please educate!