bluejay Posted January 9, 2020 Share Posted January 9, 2020 My 1541's red light wasn't going off after a couple seconds today. It stayed on. I thought, "Oh crap!" I did some research. I think 74LS14 might have gone bad. How do I fix this problem? Can I just jab 5vdc into pin 40 of the 6502 or is that just gonna fry the cpu? Is there no hope in reviving this VIC-1541? Quote Link to comment Share on other sites More sharing options...
bluejay Posted January 9, 2020 Author Share Posted January 9, 2020 Nevermind, I did some more research, swapped UC2 and UC3, and it worked! Quote Link to comment Share on other sites More sharing options...
+OLD CS1 Posted January 9, 2020 Share Posted January 9, 2020 33 minutes ago, bluejay said: Nevermind, I did some more research, swapped UC2 and UC3, and it worked! Good job. Those are the two VIAs (6522s,) correct? Quote Link to comment Share on other sites More sharing options...
bluejay Posted January 9, 2020 Author Share Posted January 9, 2020 (edited) Yeah. I didn't know swapping the same chips could solve a problem. Now back to the superglue to fix the broken floppy door... Edited January 9, 2020 by bluejay Quote Link to comment Share on other sites More sharing options...
carlsson Posted January 9, 2020 Share Posted January 9, 2020 Depending on which functions on the VIA are used, you may encounter other problems later on. I don't know if there is a proper function tester of e.g. 6522, but I've encounted a bunch of both 6522 and 6526 that are partly broken, i.e. some of the functions behave correctly and some don't. Quote Link to comment Share on other sites More sharing options...
bluejay Posted January 10, 2020 Author Share Posted January 10, 2020 Uh... turns out the problem isn't solved. Every other time I boot the drive, it gets stuck in reset, and I have to swap the chips again. And again. And again. I might have scraped a trace while pulling the chips out with a small screwdriver, but that can't be causing the reset, since it works sometimes. Speaking of which, how come swapping chips can fix a 1541 stuck in reset? Meanwhile, to all plastic experts, I need help re-attaching the handle back onto the drive mechanism. So, what happened is, during shipping, the drive must have landed on its nose, and the styrofoam(which was pretty hard) and bubble wrap must have put force on the handle, and it broke off. The broken part is kinda slanted like this: / and it puts pressure on the crack when I push down on the handle. I tried superglue(well, it was worth a try...!), melt-attaching the plastic with a small torch, and it still broke off during the process of putting the handle in place. I really need to fix this drive because I will now have no choice but to go back to using the dreadful C2N(since the handle is the part that holds the drive mechanism closed, I can't keep the drive closed while I use it), and I will absolutely die if I need to press one more "Play" button. Fine, I'm exaggerating a little, but the fact is that I really need to get that door/handle back on that drive and that the C2N sucks. Quote Link to comment Share on other sites More sharing options...
carlsson Posted January 10, 2020 Share Posted January 10, 2020 Have you studied any troubleshooting guide or simply going by gut feelings? Choose your weapon, depending on which motherboard revision you have and follow the steps to what may cause the issues: http://personalpages.tds.net/~rcarlsen/cbm/1541/ No idea about the handle. Superglue + baking powder should make a strong bond but perhaps it depends on how it is attached and what is broken off. Quote Link to comment Share on other sites More sharing options...
Like us on Facebook
Follow us on Twitter
AtariAge on Instagram
Watch us on YouTube
Chat on Discord
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.