Where can I find a A3000T power supply? [Solved]

[mdivancic]

Any ideas folks? Mine fried this weekend. Looks like most of the capacitors need to be replaced and a couple of the power resisters. I think the A3000T may be OK (but I can't tell without a power supply).

Mike

[Edit] See note below.

[mdivancic]

Mike

I endued up order a new 240V power supply from Vesalia. I could not find a US power supply anywhere. I was hoping that I would find the parts were similar enough that I could repair my old supply. The reality is better than I suspected. The guts are exactly the same and it looks like there is only one jumper to add and one lead to change.

I've got schematics for everything but the power supply. By chance, would any of you have the schematics for a A3000T power supply around so I could verify my assumptions?

Either way I'll be moving forward soon with the changes and I'll be sure to document everything so others can do thin the future if it works. I still don't know if anything died on in the computer. One step at a time.

Mike

[mdivancic]

[/quote]

Warning! Warning! Warning!

A 240volt psu will NOT work in the USA. It will kill your Amiga. :cry: :bigcry:

Warning! Warning! Warning!

[/quote]

Read the whole post please! The guts are same. A 240v European power supply has the same parts, down to the subassemblies, as the 120v North Amierican power supply. After studing both units for a couple hours the only differnece I've been able to find are:

A) The 120V US power supply has a jumper from the main board to the subassemblie labeled PSM-2560-TD1.

B) Board PSM-2560-TD1 as three inputs at the top labeled 0V, 110V and 230V.  The European PSU has the voltage input wired to the 230V positon. The North American PSU has the voltage imput wired to the 110V postion.

I'd love to have the drawing before I make any changes, but I can not find Commodore PSU drawings anywhere. I expected the transformers to be different between the units, but even these are the same. They look like multi-tap units so this explains how they can use one transformer. Once I get the new unit apart I'm going to trace out the circuit and see if I can figure out what the jumpers are doing, but I'd feel a whole lot better with the drawings.

Mike

[mdivancic]

It worked! Posting this from my revived A3000T. Everything was OK, no boards were damaged when the origional PSU went bad. The European PSU was quite easy to convert to an North American PSU. All voltages test out (-12V is running a little low, about -10.5 but no apperent problems. So should I post how it did it for others? I've taken picures of every step.

Mike