Microbee twin disk drive unit - Magic Smoke PSU

Microbee twin disk drive unit - Magic Smoke PSU - Printable Version

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RE: Microbee twin disk drive unit - Magic Smoke PSU - MarvinTMRX86 - 10-02-2026

(02-02-2026, 05:20 PM)MbeeTech Wrote:
(02-02-2026, 05:00 PM)MarvinTMRX86 Wrote: Hi there Ewan,
Hope all is well.
I'm having troubles getting an exact match on the Bridge Rectifiers which I believe are 5A, 100V.

Would these still be OK?
6A, 600V Z0079A
https://www.altronics.com.au/p/z0079a-kbu606-600v-6a-plastic-bridge-rectifier/
I don't know enough to know whether the 6A and 600V is still suitable ?

Thanks in advance for your assistance.

They should be o.k. They might just be a little larger physically.

Ewan,
Thanks again for your assistance. I replaced the components as per your recommendation and I now have a working/reliable power supply and managed to boot my Microbee from floppy for the first time which was extremely exciting. (photo below - CPM boot screen)

Unfortunately its only ever booted once and now it either spins forever or shows a banner indicating a unreadable disk, so I'm guessing the one Boot Disk that I did have has read errors and I was probably very lucky to get this to boot the once. I may have to take you up on the offer of a Boot Disk. I will email you.

I've also found a series of ROMS in a paper bag in amongst some other Microbee stuff I had. I have no idea what they are, I presume its same to test them in the ROM socket.(See photo).

Thanks again for your help. Smile