Hello,
So, I got this UPS that stopped working on the battery powered side. There are 3 outlets on the battery side and 3 other outlets that are normal, non battery supplied.
So I have a relatively small amount of electronic knowledge, so opened the thing up to look for something simple... hmmm.
So I found something! When the UPS is under tension, there is a relay that should be powered up to get the power up to the battery supplied outlets, this relay doesn't get activated.
It is a 12v dc N/O relay, I tried it and it works when I put 12v dc to it's coil and I get continuity from the wall prong to the battery supplied outlets when the relay is activated, so something between the power cord and the relay's coil is wrong, but what?
I here post a few pics to make this a bit clearer. (sorry for my cheapo cam)
1-the resetable fuse at the beginning of the circuit, I get no resistance so I guess it's ok
2-power comes through the 2 bottom clips and I can follow it up to the 2 upper clips. See next pic to see the other side of the board)
3-these 2 resistors are the + and - power lines, from here, they split in many directions, so I don't know how to follow the circuit from here.
4- the 2 clips are connected to the coil of the relay. The pencil shows 1 of the 2 pins of a contact, the other pin of that same contact is above it. There are 3 contacts (one for each outlet) the 2 other ones are right beside the first one, on its right side.
5- the pencil point to the relay that stays mute.
If anybody thinks it would be possible to guide me through some sort of troubleshooting, I would greatly appreciate to learn how to see through these always breaking things!
thanks
P
So, I got this UPS that stopped working on the battery powered side. There are 3 outlets on the battery side and 3 other outlets that are normal, non battery supplied.
So I have a relatively small amount of electronic knowledge, so opened the thing up to look for something simple... hmmm.
So I found something! When the UPS is under tension, there is a relay that should be powered up to get the power up to the battery supplied outlets, this relay doesn't get activated.
It is a 12v dc N/O relay, I tried it and it works when I put 12v dc to it's coil and I get continuity from the wall prong to the battery supplied outlets when the relay is activated, so something between the power cord and the relay's coil is wrong, but what?
I here post a few pics to make this a bit clearer. (sorry for my cheapo cam)
1-the resetable fuse at the beginning of the circuit, I get no resistance so I guess it's ok
2-power comes through the 2 bottom clips and I can follow it up to the 2 upper clips. See next pic to see the other side of the board)
3-these 2 resistors are the + and - power lines, from here, they split in many directions, so I don't know how to follow the circuit from here.
4- the 2 clips are connected to the coil of the relay. The pencil shows 1 of the 2 pins of a contact, the other pin of that same contact is above it. There are 3 contacts (one for each outlet) the 2 other ones are right beside the first one, on its right side.
5- the pencil point to the relay that stays mute.
If anybody thinks it would be possible to guide me through some sort of troubleshooting, I would greatly appreciate to learn how to see through these always breaking things!
thanks
P