68kMLA Classic Interface
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| Bad Ticker | |
| Posted by: mloret on 2022-07-31 11:59:48 Hey guys. I need help with an analog board I am trying to run on a Mac plus. It’d driving me bananas! It makes a ticking sound when the RAM test completes. The sound goes away IF i unplug the ribbon cable from the floppy drive to the logic board OR if I put a disk in the floppy drive! Here’s what i have done to figure out what’s causing the noise. -I recapped the board. Still ticks. -I tried with a different analog board that didn’t recreate the sound. To me that eliminates the logic board and the floppy as the culprits. -I tried with a different floppy drive and not surprisingly still ticks. -I tried with a floppy cable that has a red stripe instead of yellow. Still ticks. - I have checked and double checked the polarity. -I tried to swap out the cable that runs from the analog board to logic board. Same issue. any idea what this could be? Michael | |
| Posted by: LaPorta on 2022-07-31 12:05:34 That ticking sound is 100% normal on most of these. I forget what it is, but it is normal. | |
| Posted by: mloret on 2022-07-31 13:50:32 Really? Because my other board doesn’t do it! If I had another Compact Mac I would try it on there. | |
| Posted by: LaPorta on 2022-07-31 14:22:15 Here is a thread of mine from four years ago when I tore down my 512ke. Scroll down to view comments on the ticking: Next up...Mac 512kNow that my Portable is done, next on my list is my 512k. I got this little guy around 2000/2001 on eBay when I was in high school for $5 (about the going rate then). It worked, but the front upper corners of the front bezel were cracked off (I epoxied these then). I haven’t started it up for...
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