Tripp lite 1400 UPS with no power

[flinx]

Got a tripp lite UPS. Not sure of the exact model, possibly an Omnismart 1400 (it does not say anywhere on it). Was given to me because it would not power on. After prying out the 3 12 volt 7 amp batteries (quite swollen and dead), I opened it up and checked it for bad caps, scorching, blown chips, cold solder joints, blown surface mounted fuses, etc. The board is clean of all that. Checked it for voltage from the circuit breaker on the back (check). Started checking for fuses on the only Circuit board, found 2 - 25 amp, 1 - 7.5 amp, and 1 - 2 amp fuse All soldered into the board. All checked good except the 2 amp. Had to go down to the local auto parts store to get a replacement. Installed the fuse. Powered it on and..... Nothing, no power.

Can post pics but they may not help much with the mess of wires coming off the top of it.

Also I never finished my electronics class in high school so...

Any Ideas?

[Toasty]

Re: Tripp lite 1400 UPS with no power

Probably must have batteries in it to work. Similar to APC units of that size.

[flinx]

Re: Tripp lite 1400 UPS with no power

No, these can be turned on with or without batteries. I get no lights on the front panel. Even without batteries I should get a light for line voltage.

[kc8adu]

Re: Tripp lite 1400 UPS with no power

most will not fire up without good batteries.

[flinx]

Re: Tripp lite 1400 UPS with no power

Well.... Problem solved. I decided to re-seat everything on the board that could be unplugged. Plugged the batteries in again. This time there was a loud snap and spark from the battery terminal, where before there was not. The ups came up immediately. Must have been a blown fuse and a bad connection somewhere.