Commodore C64 1541-C drive repair. No communication with the c64 it just locks up the computer.

[@DJlegionuk]

If you like the retro repairs I have a 2nd channel just for them. kzbin.info

[@DJlegionuk]

Can't believe I just brought another one of these !

[@Marc_Miller]

Nice repair. Cool you can keep that older tech going.

[@DJlegionuk]

as long as you can find the parts, there is so much information for these older systems most problems can be fixed.

[@Hounddoggy33]

Nice quick repair! I had a bunch of those Disky 5.25" diskettes back in '83 while I was in Germany.

[@DJlegionuk]

I have another C64 and 1541 and after i bought it the original owner sent me a collection if his old disc so I have quite a few.

[@MindFlareRetro]

Thankfully, a quick repair. Also, I like the case you printed for your PSU, and nice work on the diag multi-cart 👍!!!

[@DJlegionuk]

Again a lucky repair and thanks to a few people. I have a idea to use a BCD rotary twitch on the diag cartridge with some 74ls logic to switch the rom hi/lo and exrom and game automatically when needed. going to work on a test soon.

[@DJlegionuk]

the case is big because I designed the PCB so I could make it on my cnc mill, but ended up ordering the pcb with some others and kept the design.

[@MrMarkneilson]

Thankyou for your help. Very helpful I had the same fault. Saved me a lot of time.

[@DJlegionuk]

Thank you for watching and letting me know it was helpful.

[@GadgetUK164]

Nice quick repair there =D

[@DJlegionuk]

I really have been very lucky with all these untested ebay items.

[@Mr_Meowingtons]

nice... I was just working on a 1541 drive I got off Ebay for like $30 it was doing the same thing so I started probing around and I too have a bad 74LS06 but I all so think 1 of the 6522 at U2 is bad. but i have spare 6522 so i am down to getting that 7406

[@DJlegionuk]

As long as the RW heads are not bad.

[@ch2o2]

well, nice - however we still don't know, what was the problem-chip because you replaced 6 chips at once (as far as I understood) - lucky you, that you had them all in stock. ..As for me I've got the exact same problem (!!) - no floppy response etc. - and I've got the exact same board. With the oscilloscope I already checked the two hex-inverters (7406) and the hex-schmitt-triggered inverter (74LS14) and they seem to work fine. So what's left is the CPU and the two 6522-chips (which got, of course, not sockets and of course I don't have them as spare-parts in stock). Where should I start? Do you have any idea, which was the bad one? :) thank you

[@DJlegionuk]

it says in the description "I then tested the hd7406 in my mini pro and found one was bad. So i replaced them both with new 74ls06 and tested again with the 1541 diagnostic rom and everything then worked" Any other chips I removed I put back in and still had the fault I didn't remove them all at the same time.

[@januzi2]

"Untested" (wink).