Hi
I noticed some other posts on here about APC UPS and it seems that some posters have good knowledge of this kit.
I was extending my (working) UPS to use a larger external 12v battery with long cables and had to put it back together again with the battery in. I had turned it upside down to solder the last croccy clip on using my Helping Hands stand when I accidentally shorted the + terminal to the metal case through the stand I was using. ( Doh!). Checking the PCB I found an open circuit 5A Fuse 4 on the board clearly blown. I soldered in a new fuse wire thinking that would sort it but the unit still won't fire up when offline although it charges the battery OK. Fuses 1, 2 and 5 test out OK and I can't see a Fuse 3 anywhere!
The board carries the number 640-0214E Rev 05.
Without a circuit diagram I am struggling to diagnose the second fault. Can anyone give a steer what to check please or find a circuit diagram for the unit?
Any help appreciated
Thanks in advance
Andrew