Repairing a 1541C ... kind of ... and a C64 ... I guess you could call it that!
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- Опубліковано 9 вер 2024
- In this video I attempt to repair and refurbish a Commodore 1541C floppy disc drive. Can I save it?
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RETRO is the new black is a retro channel for retro enthusiasts. The channel features retro computers, game consoles and gadgets from the 1970, 1980 and 1990s as well as new tech for old machines. The videos range from simple unboxing to repairs and sometimes even the creation of new things.
I try to upload two videos a week (one smaller QUICK SHOT video and one longer main Video).
Some machines featured in my (upcoming) videos are: Commodore PET, Commodore C64, Commodore VIC 20 (VC20), Atari 800XL, Commodore Amiga, Atari ST, Amstrad (Schneider) CPC, IBM PCs, Apple IIe, Apple Macintosh, Amiga 3000, Amiga 2000 and many more.
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This channel is hosted by Wolfgang Kierdorf. I am a retro enthusiast from Cologne in Germany. My retro videos are in english. If you are from a different county or need a different language, please check if subtitles are available.
Thanks for watching!
21:11 the controller board can be re-configured to match the difference of the Mitsumi mech erase coil, from the other two brands of single-side mech (with different latch).
"Pro tip; Insert a disk before..."
Indeed. :)
It's often the small things that make a huge difference ;-)
at 15:50 "it could hold some charge", well >NO
You should have checked the alignment first before taking it all apart. Never take the mechanism apart if it is not out of alignment.
That is very true!!
It is not the resistor that has failed, it is the coil.
Nice looking drive.
I hope you are recovering O.K. from your operation.
Thanks! I am super good. Better than before. I hope you are doing good too!
@@RetroWK That's excelent news. I'm well, thanks.
Good Video. Thank you for some great Commodore content!
Just today, July 25, my 1541c failed, it turns on and the red light does not turn off and does not stop spinning, I hope it has a solution and, above all, spare parts.
Tengo el mismo problema, despues de haberla guardado por mas de 25 años funcionando, no lee los discos, la limpié y no funcionó. El board parece funcionar bien, no da ninguna luz parpadeante, solo cuando da error de lectura. Me falta probar la resistencia de los cabezales.
Why can't they read the data off the disc using a laser and also using the laser to raise the spot that you want to write to to it's curie point at which point a large coil with 20 turns will write the required spot before it cools down like a MO drive.
can the MOS chips be implemented in FPGA chips as the old MOS chips seem to degrade over time.
The PLA, VIC II and CIAs are available as FPGAs. Others like ROM chips etc. are just data storage so EPROMS are the way to go here. Perifractic made a video about a C64 with just new parts.
Ui ui uih, die Herangehensweise / Fehleranalyse war aber nicht nach Prozess. Erst mal die wichtigsten Signale der ICs prüfen (Oszi) bevor man wild herumtauscht. Du baust ja auch nicht auf gut Glück den Motor aus deinem Auto und tauscht ihn, weil es nicht fährt. Die Laufwerksmechanik auszubauen ist fast schon Selbstmord, das sollte man vermeiden. Einfach so wieder zusammenbauen ist nicht. Wenn die mal zerlegt war, muss der Kopf definitiv neu justiert werden! Da langt dann aber kein Drive-Allignment-Tool das auf dem C64 läuft!
Hast Du es denn weiter versucht zu reparieren, oder haste aufgegeben?! :-)
Ich wünsche auf jeden Fall viel Glück!
Schöne Grüße, Doktor64!
Ja, das hast du vollkommen recht. Das Video ist über mehrere Wochen entstanden und da gab es definitiv KEINEN Prozess. Drive Alignment wäre jetzt mein nächster Schritt gewesen. Ich bin mir fast sicher, dass der Kopf wieder funktioniert. Der war definitiv tot (Widerstand durch). Allerdings fehlt mir im Moment die Geduld da weiter dran zu experimentieren. Irgendwann wird das ein separates Video, denn ich denke es gibt eine Menge 1541c mit dem gleichen Problem.
Isn't it the 74LS06 chip that's know to fail?
Edit: I should have waited a bit longer. :)
It is!
@@RetroWK That should be "known" on my end. And that chip that you showed is a high voltage open collector job. Interesting.
So I got to thinking (dangerous, I know). Could one of those flux boards for reading/writing floppies be put to good use here? Create a floppy with a few tracks, not many, and then read the location of the tracks with the flux board and then use it again as a guide for aligning the out of alignment head. Also, I would think that a set of calipers measuring a known good one and using those numbers to set the bad one would get you close.
@@MrWaalkman hehe! check out next sundays video. I think someone found a simpler way to adjust the head. Let me know, what you think, when you spot it!
wenn das laufwerk noch irgend wo in irgend einer kiste umhergammelt. nimm ich das für nen 10ner. versuche mein glück das wieder in ganz zu bekommen oder werde da draus nen frankensteins monster basteln. habe da ne idee im kopf wie man zumindest die elektronik nutzen kann. mit dem C64/C128
Hab selber einen Frankenstein draus gebastelt ;-)