Hello,
I have a 100-240ac to 24v ~5a power supply that is around 78mm square. Evidently this is hard to do because I cannot find a replacement.
Trying to fix the one I have, wound up replacing every part on the board except some small resistors and 2 MBR20200's. The replacements I got are MBR20200CT.. Different, right?
Anyway, it works now, which is cool, but it does not put out the power it once did, or it cuts off at about 3.5 amps.
Is this something with the power sense circuit? Can I change a part to allow more load, closer to the 5 amps?
I do have a couple working one's that I am using to set the 'bar', this is why I feel it is not performing as it should.
Also need 3 additional one's, and being through this board several times, I think I could draw it in a program.
Although there are values stamped on the board, the actual parts are different.
I will upload some pics, ah they are too big.
I posted them on my server -
http://www.usbjunk.com/24v5aps1.jpg
http://www.usbjunk.com/24v5aps2.jpg
http://www.usbjunk.com/24v5aps3.jpg
http://www.usbjunk.com/24v5aps4.jpg
http://www.usbjunk.com/24v5aps5.jpg
http://www.usbjunk.com/24v5aps6.jpg
http://www.usbjunk.com/24v5aps7.jpg
http://www.usbjunk.com/24v5aps8.jpg
http://www.usbjunk.com/24v5aps9.jpg
Common / key Parts used:
MBR20200
OB2269AP
FQPF5N60C
Transformer - G65-2S12V12 ??
One more note: Even though there is a 3A slo blow fuse on the board (AC feed), there was an in-line fuse at the power feed that was 2AMPs. After working on this power supply I had to upgrade the 2A fuse to 3A. Strange? It will blow a 2 amp fuse.
How to fix? Make it perform like the others?
Thanks
Eddiie
I have a 100-240ac to 24v ~5a power supply that is around 78mm square. Evidently this is hard to do because I cannot find a replacement.
Trying to fix the one I have, wound up replacing every part on the board except some small resistors and 2 MBR20200's. The replacements I got are MBR20200CT.. Different, right?
Anyway, it works now, which is cool, but it does not put out the power it once did, or it cuts off at about 3.5 amps.
Is this something with the power sense circuit? Can I change a part to allow more load, closer to the 5 amps?
I do have a couple working one's that I am using to set the 'bar', this is why I feel it is not performing as it should.
Also need 3 additional one's, and being through this board several times, I think I could draw it in a program.
Although there are values stamped on the board, the actual parts are different.
I will upload some pics, ah they are too big.
I posted them on my server -
http://www.usbjunk.com/24v5aps1.jpg
http://www.usbjunk.com/24v5aps2.jpg
http://www.usbjunk.com/24v5aps3.jpg
http://www.usbjunk.com/24v5aps4.jpg
http://www.usbjunk.com/24v5aps5.jpg
http://www.usbjunk.com/24v5aps6.jpg
http://www.usbjunk.com/24v5aps7.jpg
http://www.usbjunk.com/24v5aps8.jpg
http://www.usbjunk.com/24v5aps9.jpg
Common / key Parts used:
MBR20200
OB2269AP
FQPF5N60C
Transformer - G65-2S12V12 ??
One more note: Even though there is a 3A slo blow fuse on the board (AC feed), there was an in-line fuse at the power feed that was 2AMPs. After working on this power supply I had to upgrade the 2A fuse to 3A. Strange? It will blow a 2 amp fuse.
How to fix? Make it perform like the others?
Thanks
Eddiie