Yamaha PM2000 power supply replacement or repair.

[mylesgm]

Hi all, needing a little advice. I have a colleague with a dead PM2000 power supply, the mains transformer is burnt out. Is it possible to get such a part rewound/remade or if not, is there a simple source for getting a new power supply made? Not having much luck here in Australia so looking for any options.

 

[pucho812]

If you know the specs. Shouldn’t be too bad.

 

[user 130681]

Which transformer, there are two!
The large transformer will apear open circuit if the standby transformer is not active.
The original transformers were 100v AC only!

 

[arichkt88]

I’m looking to get a new power supply built or I’ll be forced to rebuild this one. It works just fine but I’m opening a media house and will need this thing 100 percent reliable. Anyone had any luck getting a power supply for the PM2000?

 

[JohnRoberts]

If you can't source a replacement transformer have you considered modern switching supplies? You might need to add some extra switching noise filters, but there should be plenty of room.

JR

 

[arichkt88]

If you can't source a replacement transformer have you considered modern switching supplies? You might need to add some extra switching noise filters, but there should be plenty of room.

JR

I’m up for anything.. I was hoping to find some one or a shop to build it. I can solder and replace caps but depending upon 45-50 year old parts that are impossible to get anymore doesn’t sound like a good strategy.

 

[Audio1Man]

If the primary is OPEN the built in thermal fuse is OPEN. You may be able to replace it, however it might have been caused because some other failure.
Duke

 

[pinebox]

Id just pull that and drop a bel power brick in it and rewire the psu. Much less time investment than sourcing the replacement transformer and recapping. They are smallish and will allow you to keep the original chassis as is. Especially if you want “100% reliable”

 

[arichkt88]

I just looked up the bell brick.. is there anyone I could consult on the proper modules to buy? I could wire them up for sure but am not sure on how to get the proper spec’s parts to deliver the proper voltages and watts

24+ and 24- rails for the channels
16v for leds
48v for phantom