Commodore 1541 Floppy Drive Repair - pt 1
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- Опубликовано: 23 ноя 2018
- I finally got a 1541 drive so I can actually start using my C64. But it needs some work first.
Well, that didn't go like I expected. I don't know when I'll get back to this but I do think I have some good leads on possible repairs. This is one of those computers I really need to get some more seat time with so I can start to get comfortable with it.
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The dark lines at the end of the video (and other parts) are my camera's sensor overheating. I use a Nikon D5300 and it is not "meant" for video. So it isn't well suited to the task.
@AkBKukU Contrary to your last line, a video about debugging old hardware without solving it at first try is pretty good. Not every case of repair needs to be sugar coated to be enjoyable to follow.
What you need is a Dead Test Cartridge! It will test all chips, and show what is working properly and what isn't. They are pretty cheap on Ebay and very useful to have :) It's been a long time since I powered on my 1541, but I'm pretty sure the power light normally blink when powered when not connected to a computer.
I've never seen a chip jump out of its socket before.
Here in Europe, especially in the former eastern block like Hungary, the datasette was the goto storage device for the c64. The floppy drive was really expensive, so not many people had it.
I feel like this is the first unboxing video I've seen that featured the contents of the box being poked with a stick :D
I really liked seeing how you diagnosed the issues on this Commodore. As a repair technician I really appreciate seeing how people figure out what is wrong with something. Keep up the good work and I can't wait for your next videos!
This video was awesome! Having problems, failing at something makes you many times learn even more!
Thank you for including all the experiments, troubleshooting, and issues. It's really great to see somebody going through the same sorts of issues most of us deal with when restoring hardware, rather than everything working perfectly after a montage.
I became an expert on Commodore stuff around age 10.
Not sure if it's been mentioned already, but the "Device not Present" error can be caused not only from a faulty CIA #1 (U1), faulty 6510 CPU or resistors at R28, R29, and R30, but can also be caused by a bad 7406 Logic chip (U8). This chip is soldered in and not part of the standard chips to swap when troubleshooting. Disregard the comment about the 7406 logic chip if your board assembly is 250469. Great video.
34:33
This might be useful for future repairs but I discovered that the plastic of c64's (and a lot of old home consoles too like the NES) can be repaired using Tamiya modellers plastic cement, it's about the same price as super glue for a huge quantity given how little you need. It takes longer to bond than super glue but it reconnects the pieces on a molecular level so strongly that it's often the case that if it does break again it'll break somewhere entirely different, if applied cleanly you can sometimes get it to look as if it never broke in the first place. For screw posts and any part of a casing that is likely to be stressed this kind of repair is massively more preferable as super glue gets increasingly more crystalline and brittle as it ages or gets hot and cold.
The number "1541" will always be special to me because of using this drive back in the 80s.
This video was GREAT! I am a huge fan of the Commodore 64, it was my first computer and I still play on it from time to time. Your frustrations with it all just made me laugh out loud, so thanks for sharing!
I'm watching this in March and I enjoyed this video! You working on old stuff is enjoyable and fun even if you don't succeed. Just watching someone who knows what he's doing troubleshoot is good content and fun!
I went out and bought an older Commodore 64 and two 1541 Floppy drives(both drives were from different people in different states initially looked good both powered up but one would spin a disk the other would not)none have been tested and a 1702 Monitor which is tested is coming next week so your video is very helpful from a troubleshooting standpoint. I would say the best thing I took away from this is to really make sure all connections are solid. In Adrian's Digital Basement he has a video where he got a C64 to work that had been protected by ants it was rusted and dirty and been in a field for decades and he got it to work.
for grounding points I would have sanded the paint off around the area you intended to place solder.. just the way I'd do it.
That was a fun video, seeing the whole process is always fascinating.
The potted power supplies on these are ticking timebombs.