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Re: Non-spinning spindle on a Sony MPF920-E
Posted: 14 Feb 2022 14:44
by stween
rubber_jonnie wrote: 14 Feb 2022 14:30
stween wrote: 14 Feb 2022 14:03
Yeah, checked and rechecked. Continuity checks all seemed okay as far as I could gather. The third and fourth pins from the top form a pathway via the spindle board (i.e. if the pins are desoldered completely, there's continuity between those two anyway), but there was no continuity between any other pair of pins once soldered back in place.
Well that's disappointing!
I know! As I said, I don't have a pinout for that particular part of the drive to cross-reference against (and I didn't go too deep on looking). But I'm confident enough of my bad soldering that I think the root problem may be elsewhere. Or maybe it's age and wear: it's been in storage and shipped in the last six months since I used it full-time. When I tried it last week it was already intermittently not spinning, and that's part of why I decided to open it up in the first place.
It bothers me when I have to give up on an old device. But it turned into a nice little exploratory experience and a bit of solder practice on fiddly components, which is still pretty okay 8-)
Re: Non-spinning spindle on a Sony MPF920-E
Posted: 14 Feb 2022 14:53
by rubber_jonnie
stween wrote: 14 Feb 2022 14:44
rubber_jonnie wrote: 14 Feb 2022 14:30
Well that's disappointing!
I know! As I said, I don't have a pinout for that particular part of the drive to cross-reference against (and I didn't go too deep on looking). But I'm confident enough of my bad soldering that I think the root problem may be elsewhere. Or maybe it's age and wear: it's been in storage and shipped in the last six months since I used it full-time. When I tried it last week it was already intermittently not spinning, and that's part of why I decided to open it up in the first place.
It bothers me when I have to give up on an old device. But it turned into a nice little exploratory experience and a bit of solder practice on fiddly components, which is still pretty okay 8-)
Sometimes you win, sometimes you lose, but if the overall experience has been useful, it's always worth it, even if you can't fix it in the end. Seems to me that FDDs are getting more and more failure prone, I have a dead ST big button floppy which is a real bind as I need it working for a machine. Not much you can do if it refuses to play. I think it has a bad head.