IPO500 V2 power supply

[digiteltlc]

Anyone has discovered the cause of faulty power supply ??

Anyone so kind to share his repairing tips ?

If it's something extremely easy as V1 PS fault , it would be nice to know.....

Thanks

 

[joe2938]

how would we know the cause, repair tips order a new box or power supply

 

[VoIP Numpty]

Avaya have always said that the IP500/IP500 V2 is not field repairable so you're officially on your own, and there are no official spares.

I know from my history on modems that the PSUs for things that connect to the telephone network are a safety critical item and include safety rated components - beware of people offering to repair such devices, they may not be using the right specification components.

 

[digiteltlc]

We were repairing partners for our national phone company (small branch) many years ago 80s-90s

I have not a great skill in switchmode power supplies (and all technician will say you they're tricky)

However, I repaired many faulty V1 power supply (that fit V2 also) simply replacing a 30cent bad capacitor (that's why for a repairer/installer/maintainer is a nuisance to buy a new one or send it to a specialized repairing center and pay some tens €).

I haven't found yet the fault on V2 power supply (if any systematic fault exists)

I'm just asking if some skillful (or lucky) repairer has the solution to share....

 

[VoIP Numpty]

(and all technician will say you they're tricky)

No argument there!
Minor components fails but is not easily detectable, but it kills the big switching transistor, that's easy to identify and replace but as soon as you switch on it kills the new one...
Not as bad as large/high res CRTs...

Fixing the modems was a breeze, but when they'd (the phone or power lines) been hit by lightning and the PCB tracks had vaporised there's nothing anyone can do

EDIT - the latter point is why I personally care about authorised repair with the right spec components - I've seen what can happen to things plugged in to the mains or telephone lines, we even had them where the RS232 drivers were blown up from something coming in from the PC

 

[Z-man]

I keep a couple older unused control units around for their PS. They can be easily swapped when needed. But for the cost of a brand new control unit, it usually is a better route to just replace the entire unit instead of messing with the power supply.