I have a few of these UPS from CyberPower and they're around 2yrs old. Model number is PF850PFCLCD or PF1000PFCLCD.
http://www.cyberpowersystems.com/pro...850PFCLCD.html
http://www.cyberpowersystems.com/pro...000PFCLCD.html
Had one trigger the alarm and discharge the battery. Would no longer power-up or charge after that. Tore it down and did not see any drama until I pulled the main board. Cold-soldering was apparent on all the had-worked joints (transformer / power) and two of them were visibly loose.
Cleaned, re-soldered and now it works fine again. My question is this, all the caps on the board are from Suscon with one from Taicon, as preventative maintenance should I swap these out?
There's 10 small ones filtering on the control side and four larger ones for power.
I'm also considering relocating the cooling fan as it doesn't seem to be effective where it is. Whatever work I do to this one will be replicated on the other units.
http://www.cyberpowersystems.com/pro...850PFCLCD.html
http://www.cyberpowersystems.com/pro...000PFCLCD.html
Had one trigger the alarm and discharge the battery. Would no longer power-up or charge after that. Tore it down and did not see any drama until I pulled the main board. Cold-soldering was apparent on all the had-worked joints (transformer / power) and two of them were visibly loose.
Cleaned, re-soldered and now it works fine again. My question is this, all the caps on the board are from Suscon with one from Taicon, as preventative maintenance should I swap these out?
There's 10 small ones filtering on the control side and four larger ones for power.
I'm also considering relocating the cooling fan as it doesn't seem to be effective where it is. Whatever work I do to this one will be replicated on the other units.
Attached Files
But today, I’m making an exception here. Why? No idea. Perhaps only because the repair details are still “fresh” in my head… which is ironic, given this is a 16 year old monitor that hardly anyone will care about today. It is new to me, though. 
I picked it up last November from someone on my local Craigslist. It wasn’t very close to where I live, but was close to a family friend that I had to go visit anyways. So after watching the posting on Craigslist for a few weeks and seeing it getting...
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