Hey Matt, I've done a lot of synthesizer repairs of similar vintage (and sometimes similar architecture!) and I'd recommend not replacing any caps unless you've done diagnostics to determine that they're the cause of a specific problem. There's no hard-working filter caps in this machine like there is in amplifiers or other things having big linear power supplies.
On my 102, I was able to repair a few of the keys with this stuff a few years ago, but they're still a bit dodgy at times. Might be a good idea to find a better solution. https://www.sciplus.com/keypad-fix-45985-p On Tue, Aug 4, 2020 at 5:18 PM Gregory McGill <arcadeshop...@gmail.com> wrote: > It's the internal battery looks like some coin cells wrapped in plastic.. > should be replaced asap in all model 100/102/200's > > https://www.arcadeshopper.com/wp/store/#!/NI-CD-3-6v-60Mah-replacement-battery/p/109811150/category=32594049 > > On Tue, Aug 4, 2020 at 2:15 PM Peter Vollan <dprogra...@gmail.com> wrote: > >> Forgive my ignorance.... What is a varta? >> >> On Tue, 4 Aug 2020 at 09:14, Matthew Stock <st...@csgeeks.org> wrote: >> > >> > Thanks Wayne. >> > >> > Yes, I already clipped the varta out (it had started to go, but hadn't >> > hit the board yet). Caps will be next - also something I need to do >> > on the M102. >> > >> > Matt >> > >> > On Tue, Aug 4, 2020 at 12:08 PM Wayne Talbot <a...@2tsquared.com> wrote: >> > > >> > > Change the internal battery; if it is not bad now, it will likely go >> bad soon and can rot your computer. While you have the case open, it is a >> good idea to replace the capacitors. Again, if they are not bad now they >> soon will be. >> > > Congratulations on your find. >> > > >> > > On Tue, Aug 4, 2020 at 10:53 AM Matthew Stock <st...@csgeeks.org> >> wrote: >> > >> >> > >> Hi all, >> > >> >> > >> I recently picked up a "for parts, not working" M100 on Ebay. After >> a >> > >> quick inspection where I didn't see any obvious damage, I tried >> > >> powering it up with a wall wart. Much to my surprise, it came up >> > >> immediately and seems to work just fine (keyboard, display, etc). My >> > >> guess is that the corrosion in the battery case wasn't cleaned enough >> > >> and is preventing battery operation. It needs cleaning and a new >> > >> varta, but that's about it. >> > >> >> > >> My dilemma is that I have a M102 with some bad keys, and my intention >> > >> was to use the M100 as a parts doner. I really don't want to destroy >> > >> a working system. Does anyone here have a doner keyboard that's in >> > >> reasonable order? Looking for mainly the locking keys (caps, num >> > >> lock) and the function/arrow keys. >> > >> >> > >> I may just end up keeping the M100, though I really don't have a need >> > >> for it. :-) >> > >> >> > >> Thanks, >> > >> >> > >> Matt >> > -- Disclaimer: Any resemblance between the above views and those of my employer, my terminal, or the view out my window are purely coincidental. Any resemblance between the above and my own views is non-deterministic. The question of the existence of views in the absence of anyone to hold them is left as an exercise for the reader. The question of the existence of the reader is left as an exercise for the second god coefficient. (A discussion of non-orthogonal, non-integral polytheism is beyond the scope of this article.) Thanks /usr/games/fortune
