Recent content by displaced

Gotcha -- thanks for the tip!

Thanks! Might grab one even if I don't use it in the LC475's PSU since I'm sure I'll find a use for it.

Thanks for the info, all! I’ll keep the de-rating requirement in mind for — maybe will stick with new electrolytics on a future restoration. @pizzigri — just out of curiosity, what MeanWell did you use to replace the LC PSU’s innards? Probably won’t go that route this time, but I’ve used MW...

Thank you very much, @dougg3! I'll get some ordered then see how the repair goes!

Ah, that makes sense! I shall stock up on 10V and 25V replacements and redo the recap! Still wondering about what part that C10 diode on the PSU is -- I'll desolder it and see if I can make out any of the markings. If I can figure out a suitable replacement for that, I'll recap the PSU and...

Hello! I recently picked up a clean-looking LC475. Gave it a visual once-over, no caps looked bad on the board or the PSU (a DynaComp DCF353, 240V 'cos it's a UK machine). Checked the PSU output rails and it all looked fine. Started it up and again, fine, but very noisy audio. Then...

So, I've reflowed all the solder joints on the connectors and looked over both the analogue and logic boards closely, but no dice. I'm not sure if this helps with diagnosis, but I noticed the following: The machine will run for a while from cold. Formatting a floppy repeatedly will eventually...

Ok, I’m getting really weird readings from the floppy connector with the machine in its not-booting state. Struggling to get anything from the 5, 12 or -12 lines. When I do get something stable, it’s 2 or 3V on any of those three. That’s against the GND lines on the socket as well as with...

Ah yes! Will grab a pin out and give it a test. Thanks!

Thanks, PotatoFi! Just curious, do you know some good points to test the +5, +12 and -12V voltages at on a running system?

Bit more info: after leaving it for a few hours, it started fine! Ran well for about 10 minutes, even managed to format a floppy to test my FDD refurb job. Finder showed the full 4,096K…but then it froze. And it’s back to showing the pattern in the photos and won’t boot again. I’m still sorta...

Hi! I picked up my first compact Mac - an SE SuperDrive with 1MB RAM. It booted fine, but the display brightness was unstable (dimmed in unison with hard drive access) and the horizontal screen size would jump by 5mm or so every now and then. So I ordered cap kits from Console5 for the PSU and...