A1000 PSU - convert to 230V? Possible?

[chiark]

Folks, I've just bought an a1000 from the USA.  I live in England

The PSU will be 110v, and the video output will be NTSC.  NTSC isn't a problem, but the psu is.

Is it possible to reconfigure the PSU to convert 240v to the required internal voltages?

Any ideas?

[chiark]

Thanks Oli, I've got an external converter (only low power - so I need to get another beefier one) but I'm wondering if it would be a fairly straightforward job to do an internal conversion

Thankfully my health insurance and home insurance covers me for doing daft things - I'm in England, not the USA

[chiark]

well, after 6 weeks on a boat, it's finally here :-D

I've disassembled it - it's a thing of beauty - and there's nothing in the PSU that is switchable.

I am wondering about using a PC PSU, as it needs
+5v,-5v,12v, GND and ! 60Hz
Everything apart from 60Hz is right on a PC psu...

I've also got the problem of 50 vs 60 Hz...  

Anyone know what'll happen if I feed an NTSC amiga a 50Hz power supply, even at 110V?

[chiark]

Homer, yes, I understand all that...

However, as well as +5, -5, 12V and ground, there's a 60Hz frequency output from the PC to the Amiga.

I don't know if the 'miggy derives part of its clock or sync from that

[chiark]

Cheers Homer, appreciated.  I didn't mean the ... as an insult...  ;-) :-D

Well, it's working despite being fed a 110V 50Hz signal - I'm just using a cheapo 100W converter from maplins.  The 1000 states it'll draw 1A max at 110V, so I'm hoping that VA is near enough to Watts to make no difference.

I don't know what the internal tick signal is - I guess it might just be AC, or it might be some pulse derived from the AC.  I'm not going to mess, seeing as its working using the external converter.

Tomas, unfortunately there's no switch on it, and nothing inside the PSU.

Of course, the whole board is running in NTSC mode, meaning my resolutions are 200 vertical lines rather than the PAL 256.  There's no jumpers at all in the 1000, so no easy option to change.  I wonder what the difference is - is it just Denise?

It's quite nostalgic booting into WB 1.2 with KS1.2 and 512KB of memory...

[chiark]

Thanks for the link, and for the info on Agnus.  I never realised it was agnus that controlled the available resolutions (either that, or I forgot... I've still got the HRM somewhere :-D )

Only question is where on earth to find an 8367 agnus :-) - I'm looking :-D