Re: More switchmode power supply grief - Cisco IGS router

On Sun, 6 Feb 2022, Peter Coghlan via cctalk wrote: > > NB Mouser has the MAP80-4000G in stock actually, so if all else fails and > > you are determined to get the IGS running, you can pick a brand new one: > > . > > > > Thanks again Mac

Re: More switchmode power supply grief - Cisco IGS router

"Maciej W. Rozycki" wrote: >On Sat, 5 Feb 2022, Peter Coghlan via cctalk wrote: > > > > This PSU seems to have been used across various Cisco devices and I had > > > one fail several years ago in a WS-C1202 Ethernet/FDDI switch, also > > > having > > > suffered from leaking caps. Back then RS

Re: More switchmode power supply grief - Cisco IGS router

On Sat, 5 Feb 2022, Peter Coghlan via cctalk wrote: > > This PSU seems to have been used across various Cisco devices and I had > > one fail several years ago in a WS-C1202 Ethernet/FDDI switch, also having > > suffered from leaking caps. Back then RS still had it in stock at a hefty > > pric

Re: More switchmode power supply grief - Cisco IGS router

Mean-Well is a maker of drop in power supplies. They sell a wide variety of sizes and output configurations. The supplies are (mostly) not expensive, though not as cheap as something you might dig up on e.g. AliExpress. They also won't burn your house down :) The name is rather unfortunate. Al

Re: More switchmode power supply grief - Cisco IGS router

What's a "Mean-Well module"? I somehow find myself imagining: "I put a new module in my router. It blew up. At least it meant well" :-) (My IGS has the rather heavy and over-engineered divider shelf with the main board underneath and the fan and power supply above.) Regards, Peter Coghlan J

Re: More switchmode power supply grief - Cisco IGS router

Phil Blundell wrote: > > Does that PSU have a PWM controller IC, or is it built entirely from > discretes? > If there is an IC driving the chopper transistor then you may be able to get > some clues about the likely characteristics of the transistor from the IC > datasheet. > It's all discretes.

Re: More switchmode power supply grief - Cisco IGS router

With that much carnage, I'd probably drop a Mean-Well module in there. I believe there would be enough room for one or two in the IGS I have (taller white box, divider "shelf" over the mainboard, I don't know if there was a lower profile model). Thanks, Jonathan --- Original Message --

Re: More switchmode power supply grief - Cisco IGS router

On Thu, Feb 03, 2022 at 06:06:10PM +, Peter Coghlan via cctalk wrote: > Today I finally managed to check it out. The ceramic F4A mains input fuse > beside the power switch on the back panel had blown. When I opened it up, > I found a POWER-ONE MAP80-4000 power supply. The main chopper transi

Re: More switchmode power supply grief - Cisco IGS router

"Maciej W. Rozycki" wrote: > On Thu, 3 Feb 2022, Peter Coghlan via cctalk wrote: > >> Today I finally managed to check it out. The ceramic F4A mains input fuse >> beside the power switch on the back panel had blown. When I opened it up, >> I found a POWER-ONE MAP80-4000 power supply. The main ch

Re: More switchmode power supply grief - Cisco IGS router

On Thu, 3 Feb 2022, Peter Coghlan via cctalk wrote: > Today I finally managed to check it out. The ceramic F4A mains input fuse > beside the power switch on the back panel had blown. When I opened it up, > I found a POWER-ONE MAP80-4000 power supply. The main chopper transistor > labelled Q1 on

More switchmode power supply grief - Cisco IGS router

I have a Cisco IGS router which hasn't worked for a long time. When I was last using it several years ago, it occasionally crashed and restarted. This turned out to be due to a poor contact on a connection in the cable going from the output of the power supply to the main board. I cleaned the con