Converting Macintosh Plus from 110V to 220V

[amedeo_68k]

Hi,
I have got a Mac Plus which is 110V rated, as far as I know, the board have space for 220V components which are not installed.
Do you think it is possible to convert the unit to 220V ?

 

[LaPorta]

Anything is possible with enough work. However, I think a far better solution would be to either get a converter or a 220v analog board from someone.

 

[cheesestraws]

There's an "international" board that came in both 110V and 220/230V variants. If that's what you have, in theory it's possible, but I don't know if anyone actually knows how to?

 

[mg.man]

Actually, I don't believe this is possible... not with the 110v only 'board. I've heard some US voltage Pluses did have the "International" 'board. Post a pic of yours and I'm sure others will chime in.

 

[cheesestraws]

Yes, the US 110V board isn't convertible even in theory afaik.

 

[mg.man]

FWIW, I *have* successfully converted a Classic A/B from 220V to 110V. That did require some jumper and capacitor moves. But unless you have the "International" A/B for the Plus, I'm pretty sure you're stuck with 110V...

 

[LaPorta]

Yes, the later compacts had boards that could operate as either depending on jumpers or switches. The Plus, however, was a different story.

 

[mg.man]

depending on jumpers or switches

There are no switches on the Classic A/B. Soldered wire "jumpers"/links need to be changed, and one voltage has 2 the other 1 large cap (of different values) - these also need to be changed. I have a usenet post somewhere if anyone is interested.

 

[amedeo_68k]

Thank you so much for the answers. I’m going to open the machine and look at the analog board in the coming days. I’ll keep you informed.

 

[LaPorta]

There are no switches on the Classic A/B. Soldered wire "jumpers"/links need to be changed, and one voltage has 2 the other 1 large cap (of different values) - these also need to be changed. I have a usenet post somewhere if anyone is interested.

I've definitely seen a whitch somewhere on one of these compacts....I'll have to see where.

 

[mg.man]

I've definitely seen a whitch somewhere...

I acquired this hoard last year...

...none of the A/Bs had a "voltage" switch...

 

[cheesestraws]

None of mine have switches, either. That's not to say there wasn't one, but if there is I am fairly sure it didn't reach the UK...

 

[LaPorta]

I'll have to figure out what the heck I am thinking of. Maybe it was a jumper...maybe it was a brain fart...

 

[mg.man]

maybe it was a brain fart...

I have those all the time.....