APC Back-UPS Pro 1500 Watt Teardown

[Mads Barnkob]

A teardown of a desktop "PRO" UPS, the APC Back-UPS PRO 1500, a run down of the controller and power electronics of the system. I also compare it to the APC Smart-UPS 1500 VA, that I did a teardown of, some months ago.

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I forgot to take pictures

[Mr.Cas]

Hello, I have the same UPS but American version 110v BR1500G. I had a problem that was using batteries (disconnected from the mains) a relative connected it from the output directly to the electric current. and it gives error f02 and does not change batteries, it gives that error that is short in the battery output. I took it to a technician and one of the output mosfets that you show was shorted (one of the four that are alone below, not the three towers aligned above but the only one below). He changed it for another (he changed the two that were in the upper heatsink because one was shorted and the other was not but he says that both should be changed) and when he turned it on he burned them. My question is if you can give me some information about it. He put 50v mosfets because he says that those there are 30v and I don't know what to do. What suggestion can you give me? Thank you very much and from now on I am a follower of yours because your videos have helped me a lot. I am from Cuba.