Commodore 1541C Floppy Disk Drive Repair & Cleaning скачать в хорошем качестве

Commodore 1541C Floppy Disk Drive Repair & Cleaning

If you would like to support the channel via Patreon (keep the channel running) -   / gadgetuk164   Alternatively you could buy me a coffee or donate via Ko-fi - much appreciated! https://ko-fi.com/gadgetuk164 A short video covering the repair of a Commodore 1541 C Floppy Disk Drive. Mitsumi Newtronics Head coil resistance readings on a working drive:- red & yellow: 25.6 Ohm red & black: 12.4 Ohm red & blue: 23.8 Ohm yellow & black: 13.8 Ohm yellow & blue: 25.2 Ohm black & blue: 12.0 Ohm For the Newtronics 1541C model:- J3 ON = track 0 bump J3 OFF = track 0 use photo sensor J1 ON J2 ON = DEVICE 8 J1 OFF J2 ON = DEVICE 9 J1 ON J2 OFF = DEVICE 10 J1 OFF J2 OFF = DEVICE 11 Cleaned the heads really well twice, still not reading at all - zeros coming back no matter what is read. It was reporting 74 errors most of the time. After de-magnetising the heads it started giving 27 (CRC?) errors, so it actually came back to life at that point. Then after more cleaning, and eventually using a plastic cleaner to remove some pretty stuborn particals from the head, it was then perfect. I did also later de-magnetise the heads a few more times - that was when I had a bad disk and didn't realise I had already got the head working perfectly. #commodore #1541 #diskdrive #repair #service #diagnose