Hi, I'm a keen amateur repairer of electronics, mainly as a hobby since the time I spend certainly wouldn't feed the kids if I was charging. I'm hoping someone out there can help me. I will try to upload pics, the issue is with a burnt resistor where I don't know its value. (R11)
The 'patient' is an Antec SP350p with PFC PSU with bad caps, but which hardly looks used and is very clean. Since it's a hobby, I put more emphasis on getting it fixed as a spare rather than spending a small fortune re-capping and modding, which is above my level anyway. I include a pic of other area, caps look ok?
Anyway, I removed two swollen caps (EC10 & EC11) from what I understand is the 5v live rail (2200uF and 1000uF, both 10v). The pics are with these removed and to the left is a resistor (R11) that's burnt black and has peeled, so no colour code (that's how we spell 'colour' here!)
I notice in others' pics this position is left empty. I'm not knowledgeable enough to know whether these will be different because of the mains voltage, 230v, but I'd expect that was taken care of at the primary stage?
Anyone out there with the same device or a drawing that would take a look and let me know? I'd also like an opinion of whether this might have caused damage to other components in the supply or computer, or is there a fail-safe built in? I'm not sure what the 4 pin chip is from the left of the caps (as pic) – regulator? (Marked L0625 – 817CN). I think the DVD writer is faulty but I can't power up 'til I have a power supply.......I might just fit the caps and a low value resistor and fire it up (I hope not literally!), I hear others have got away with this repair.
Thanks in advance, apologies if I'm in the wrong place and for any other serious infringements of etiquette I've probably made, (first post!)
Alan
PS there's also a small defect on the board below the burnout I can fix with solder.
The 'patient' is an Antec SP350p with PFC PSU with bad caps, but which hardly looks used and is very clean. Since it's a hobby, I put more emphasis on getting it fixed as a spare rather than spending a small fortune re-capping and modding, which is above my level anyway. I include a pic of other area, caps look ok?
Anyway, I removed two swollen caps (EC10 & EC11) from what I understand is the 5v live rail (2200uF and 1000uF, both 10v). The pics are with these removed and to the left is a resistor (R11) that's burnt black and has peeled, so no colour code (that's how we spell 'colour' here!)
I notice in others' pics this position is left empty. I'm not knowledgeable enough to know whether these will be different because of the mains voltage, 230v, but I'd expect that was taken care of at the primary stage?
Anyone out there with the same device or a drawing that would take a look and let me know? I'd also like an opinion of whether this might have caused damage to other components in the supply or computer, or is there a fail-safe built in? I'm not sure what the 4 pin chip is from the left of the caps (as pic) – regulator? (Marked L0625 – 817CN). I think the DVD writer is faulty but I can't power up 'til I have a power supply.......I might just fit the caps and a low value resistor and fire it up (I hope not literally!), I hear others have got away with this repair.
Thanks in advance, apologies if I'm in the wrong place and for any other serious infringements of etiquette I've probably made, (first post!)
Alan
PS there's also a small defect on the board below the burnout I can fix with solder.
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