rommudoh, to c64
@rommudoh@social.tchncs.de avatar

After getting the and running again, the next device to repair is the .
It had and on the main board and the power supply is beyond repairworthiness. I'd replace the latter with a RD-35 with 5 and 12 volt output.
One was rusty, a few traces needed and five looked bad. Hope the black hybrid chip is still okay.
Sadly, the lower read head seems to be broken, my work might've been in vain.

the worst corrosion on the main board. a rusty diode and a few other rusty pins.
the same section after cleaning and replacing the diode and five resistors (the blue ones). the fixed traces have been covered by soldermask again
the mechanics schowing the read heads. sadly, the lower head is reading open circuit where it shouldn't, indicating broken coils.

root42, to retrocomputing
@root42@chaos.social avatar

New video:
Zombie Floppy: How To Revive A Broken 1541 Head

The Commodore 1541 floppy drive is a real workhorse, that was used by millions of C64 users.The Mitsumi drive assembly has the annoying fault to have their drive heads fail due to some wires going open inside of the read/write head. A clever user by the nickname of Ruuudi has designed a little bodge PCB to make the dead drive head work again:

https://youtu.be/MpDwxq488f0

root42, to c64
@root42@chaos.social avatar

Another dead C1541 on our desk. This one was reported as "not working". It was gutted for its 6502 and 6522 VIA chips, but supposedly even with those in place it wasn't working. So let's have a closer look...

root42, to random
@root42@chaos.social avatar
root42, to retrocomputing
@root42@chaos.social avatar

My favorite pastime: Floppy drives on the bench.
#commodore #c1541 #floppydrive #retrocomputing

root42, to random
@root42@chaos.social avatar

This is what we call an „off by one“ in the industry.
#commodore #c1541 #floppydrive

db, to Twitch
@db@bla.daanberg.net avatar
pixel, to retrocomputing
@pixel@social.pixels.pizza avatar
nickdewolfphoto, to photography

aspen, colorado
1982

kit computer
aspen computer society

https://www.flickr.com/photos/dboo/11227697254

© the Nick DeWolf Foundation
Image-use requests are welcome via nickdewolfphotoarchive [at] gmail [dot] com

jasonnab, to random
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