Dirty hacks: Power supply for catalyst switch

[darkdub]

Ok... I'm looking at a dirty hack for a power supply to a Cisco catalyst switch. The existing PS is definitely broken (when disconnected from the switch motherboard, the PS trips the circuit breaker when plugged in almost immediately).

Inside the case, the power supply connects to the motherboard with what appears to be a standard 24-pin ATX power connector... the connector from a regular power supply fits. =)

Will a standard PC ATX power supply work to power the switch in this manner? I know in the past (ancient history perhaps) Cisco gear was basically built on old Intel hardware. I'd love to test before buying a power supply specific for the switch.

 

[cactus]

I have not had a PSU open, but I would say no. I know with our 6509s some have 24v power for fans and such which makes me think it is not going to be a normal ATX PSU.

 

[darkdub]

I'm tempted to try, regardless.... going to pick up a cheap ATX PSU at lunch and see what happens. If you don't hear from me, it probably went horribly, horribly wrong. =)

The pinouts for the RPS connectors have some odd voltages going on, but it seems odd that the connector on the motherboard itself is exactly that of a 24-pin ATX connector. I have a sneaking suspicion that it will work. Will report back later.

 

[dashpuppy]

I bet it will work, you don't really have much to loose do you ? Its a older unit ?

What is the model # ?

See this ? a 6 year old sonicwall, the psu on ebay was 110$ i plugged a normal computer psu into it and it worked 100%

If you want, and if you are close, you can ship the psu that is dead to me and ill fix it for you.

 

[darkdub]

I bet it will work, you don't really have much to loose do you ? Its a older unit ?

Heh... yeah, that was my thinking. I tried it.. sparks flew, but thankfully only from the power supply. It looks like the pinout is different, despite using the same ATX 24-pin connector.

What is the model # ?

See this ? a 6 year old sonicwall, the psu on ebay was 110$ i plugged a normal computer psu into it and it worked 100%

---IMG removed---

If you want, and if you are close, you can ship the psu that is dead to me and ill fix it for you.

I appreciate the offer. By chance, I found the exact power supply being sold for $10.95.

http://www.cablesandkits.com/cisco-2948g-power-supply-34091501-p-852.html

If it weren't for that, I'd have been interested in taking you up on your offer. It should be here in a few days. I'll find out then if it was just the PS or something more.

 

[darkdub]

Got the new power supply, installed it, and it powered on! At least, the first time. After it was powered off, it refused to power on again. The new power supply is now tripping the surge protector every time I plug it in. I'm a bit suspicious that something is wrong with the switch at this point...

 

[dashpuppy]

Got the new power supply, installed it, and it powered on! At least, the first time. After it was powered off, it refused to power on again. The new power supply is now tripping the surge protector every time I plug it in. I'm a bit suspicious that something is wrong with the switch at this point...

post pictures of inside the switch ? sounds like a bad cap..