APC SMT-750 turns off for no reason
Well guy's and gal's, after 6 years of flawless service, my APC SMT-750 developed a strange behavior. 
This UPS hooked up to my PS3, PS4, a media streamer, a network switch and a 40" LCD TV. My kids reported that the TV or the PS3 turns off, wait a few minutes and then one can go at it again and it works for days fine as kind. As it goes Friday night = movie night. And? Riiight, middle in the friggin movie, I heard a "click" and everything turned off that was connected to the UPS. 
Nothing had any power. My investigation and found out that the UPS itself was still on, but it had all power outlets turned off and there was a warning that there was no batteries inserted. Hmm... so I turned the outlets manually on UPS back on via the front panel. Now the front panel shows that the battery life is over 2hrs, no errors or anything else? So I unplugged it form mains and powered it on through the batteries. Again, no errors, everything is working but the "beep" sound sounded really funky (it does this also when plugged in), but the display is nice and crisp and yet it makes power at the outlets. I yanked out the batteries and had a look. I found two 10v 330uF looking pregnant and puking their guts out. 
I didn't take anything apart yet, in order too see if there are any other caps that need replacing too. Anyone else with a APC SMT series UPS that has bad caps and behaves strangely and replaced caps? Probably my chances to find a schematic for the early SMT series UPS is like nill. 
This UPS hooked up to my PS3, PS4, a media streamer, a network switch and a 40" LCD TV. My kids reported that the TV or the PS3 turns off, wait a few minutes and then one can go at it again and it works for days fine as kind. As it goes Friday night = movie night. And? Riiight, middle in the friggin movie, I heard a "click" and everything turned off that was connected to the UPS. Nothing had any power. My investigation and found out that the UPS itself was still on, but it had all power outlets turned off and there was a warning that there was no batteries inserted. Hmm... so I turned the outlets manually on UPS back on via the front panel. Now the front panel shows that the battery life is over 2hrs, no errors or anything else? So I unplugged it form mains and powered it on through the batteries. Again, no errors, everything is working but the "beep" sound sounded really funky (it does this also when plugged in), but the display is nice and crisp and yet it makes power at the outlets. I yanked out the batteries and had a look. I found two 10v 330uF looking pregnant and puking their guts out. I didn't take anything apart yet, in order too see if there are any other caps that need replacing too. Anyone else with a APC SMT series UPS that has bad caps and behaves strangely and replaced caps? Probably my chances to find a schematic for the early SMT series UPS is like nill.
Half of the computer problems is caused by bad contacts 
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