Dell PowerConnect 2716 dead PSU

[rs4847]

Wouldn't you know it I smell something burning and it turns out to be the PSU in one of my switches.

A quick google reveals it's a common problem with the Delta ADP-40VP PSU, link.

I've tested the fuse on the PCB and it hasn't popped however the PCB around the failed cap and lower MOSFET looked burnt so I'm wondering if it's worth attempting to repair or just replace the PSU and hope for the best?

Some pics:

[rs4847]

Well I decided to replace the PSU.

Ordered an Artesyn NLP40-7605J PSU from Farnell (PN:1516423) for £40.98 delivered also available from RS (PN:629-5721).

Side by side (Delta ADP-40VP top, Artesyn NLP40-7605J bottom):



Now looking at it the Artesyn PSU has the input power polarity reversed, however I doubled checked the polarity with the IEC C13/C14 connectors and cables and it's the Delta that's reversed, black is live and beige is neutral at least on my 2716 so no rewiring was necessary, I always like to observe polarity even if it's not required. The Artesyn also has a easily replaceable fuse and a few Rubycon caps so I would expect it to last longer than the Delta.

I checked the output from the Artesyn and it was a stable 5.00v DC then rebuilt my switch.

Working again:



If this was an 10/100 fast ethernet switch then I probably wouldn't of bothered repairing it, however the Delta ADP-40VP PSU powers quite a few gigabit 16/24 port switches as well and considered my 2716 worth saving from the scrapheap. My 2708 doesn't share the same PSU unfortunately though it's another Delta this time a ADP-30JP, I just hope it's as easily replaceable if or when the time comes.

[FatalSaviour]

Nice thread rs - very inspiring. Fortunately I've not had a PSU die on any of our Dell switches, but it's good to see someone not prepared to simply chuck them or send them off for repair!

[Jonatron]

Had a Dell PowerConnect 2716 die yesterday, replaced capacitor C3, and it works again!

[rs4847]

Nice thread rs - very inspiring. Fortunately I've not had a PSU die on any of our Dell switches, but it's good to see someone not prepared to simply chuck them or send them off for repair!

Thanks!

Had a Dell PowerConnect 2716 die yesterday, replaced capacitor C3, and it works again!

Glad the C3 replacement worked for you, my PSU looked too far gone to considering it.

[tucker8235]

I had a power supply go bad in my Dell Power Connect 2808 and it had a ADP-30JP in it. I was able to find a power supply from Jameco electronics that had the same specs and was mostly a plug in replacement though the screw holes did not all line up. $24 shipped, was way less than any other replacement ps I could find and I didn't want to try my hand at soldering . I used the open frame Mean Well PS-35-5 part number 1918972. Hopefully that will help someone out there.