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As I suspected, the floppy disks just needed to be rewritten to freshen up the magnetic domains, so that's great. This thing works perfectly.

...and then five minutes after I took those photos, I heard a noise like a string of firecrackers, turned around, and there was smoke pouring out of the floppy drive.

Fortunately, it was just a RIFA cap. That makes this a real banner week for me, because while that's supposed to be a definitive experience for retrocomputing, I've actually never had a RIFA go before! Everyone always says they smell terrible but I don't get it - it just smells like a campfire, really, which I don't mind too much.

If you're unaware, RIFA caps are basically dead weight. They're supposed to prevent back-EMI onto the powerline as I understand it, but none of us care about that, and they almost never cause any collateral damage, so all I have to do is cut this out and plug the thing back in, no harm done.

Anyway, I know I've posted a lot about this thing but I just figured I'd confirm that it was in fact fully working (trust me, despite the above, it still is,) plus I often don't find a way to squeeze this kind of anecdote into a video and I didn't want it to go to waste.

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Comments

TadeusTaD

This DEC is s-s-s-smokin'!

Stormcrash

Nothing like a harmless smoke show to cap off the project! So cool to see CP/M all booted up on it.

Bill Florio

I find it hard to believe you'd leave that as is and not replace it 😂

sdomi

clicking on the notification I was 50/50 expecting a catastrophic failure OR a rifa cap. i much prefer this outcome

Asriel Yuill

Not to jinx it but I can already tell from the quantity of enthusiastic posts that this video's gonna be an all-timer

Chas Becht

Loving the string of surprising firsts here. "Believe it or not, I hadn't repaired a CRT before" "Believe it or not, I hadn't had a rifa explode before" I'm looking forward to whatever happens next that you've somehow never experienced.

Dante Blando

Excellent dad joke. Full marks!

Dante Blando

Someone on Tumblr had posted a RIFA magazine ad from four decades ago. They were bragging about their Brutalist caps lasting for 40 years. The time is now up, but they were eerily accurate with their mean time to failure.

Phia Westfall

Before I actually saw it written out, I assumed people were calling them "reefer caps" because all they do is make stinky smoke!

Rick Green

POP! GOES PERFECTION!

Loading_M_

From memory, the filter caps are there to protect the power line and the device from high frequency noise generated on the other side (I.e. both preventing noise from escaping, which you probably don't care as much about, and preventing noise from getting in, which could be a larger issue depending on what else is in the circuit). I would be cautious about putting multiple devices without filter caps on the same circuit.

Lachlan Lau

Cheap replacements can be had (at least where I am) from LCSC, including shipping.