Re: TRS-80 Fireworks
> On Aug 28, 2019, at 2:07 AM, Guy Dunphy via cctalk > wrote: > An extremely common problem with all old electronics from around that era. > The mains filter caps are commonly 'RIFA' brand metalized polyester film, > encapsulated in a clear-honey-coloured resin. > The problem is that the resin embrittles and shrinks with age, resulting in > many small cracks. (And sometimes large pieces falling off.) > The cracks let in moisture, which absorbs into the insulating film. I suspect those notorious Rifa brand capacitors would not be so problematic if they had polyester film dielectric. But if I'm not mistaken, they don't; they have *paper* dielectric! Aside from that one correction, I agree with everything else you wrote about the likely failure mechanism of these evil little rectangles of compressed smoke and fire. -- Mark J. Blair, NF6X http://www.nf6x.net/
Re: SMD disks
On 8/30/19 12:50 AM, P Gebhardt via cctalk wrote: > Talking about such drives, did anybody ever come across some manuals for the > Super Eagles M2361A? Just uploaded it to bitsavers
Re: test
Test faild. Please call support. ---8<---Corte aqui---8<--- http://www.tabajara-labs.blogspot.com http://www.tabalabs.com.br ---8<---Corte aqui---8<--- Em sex, 30 de ago de 2019 às 21:21, steve shumaker via cctalk < cctalk@classiccmp.org> escreveu: > Apologies for the question marks in the previous post - Thunderbird > reverts occasionally. test It should be fixed now. > > > Steve > >
test
Apologies for the question marks in the previous post - Thunderbird reverts occasionally. test It should be fixed now. Steve
Classic HP DesignJet Plotter
OK...?? it isn't Versatec or Calcomp but it is early HP.?? It's a DesignJet 755CM.?? HP part number is C3198B.?? It was fully functional and in weekly used when finally taken out of service but it's been sitting for 20+ years in inside storage and it needs a new home. I haven't fired it up as it *will* need new belts (just from sitting) but otherwise it should be in fairly good mechanical/electronic condition. Lots of tech data including the complete service manual can be found online. It needs a new home. Any interest? Physically/cosmetically it's in good shape although the paper bin is not original.?? Its mounted on the classic DesignJet stand for mobility and I have a box of assorted unused/sealed ink cartridges (beyond that, their status is totally unk though).?? I can probably find a roll of paper for it as well. Located in the SF Bay area, it *could* be shipped but I suspect you don't want go there - even if I boxed it myself.?? If there's a serious interest, I'd be open to delivering it or meeting part way.?? Obviously, I can part it out or just e-waste it but those seem like such a shame to do. I could email some photos off-list if there's anyone interested. Steve
Re: SMD disks
fre 2019-08-30 klockan 11:05 -0700 skrev Guy Sotomayor Jr via cctalk: > I’m actively working on SMD and ESDI emulators. However, given my > work schedule this is a long term project. :-( > > TTFN - Guy > > > On Aug 30, 2019, at 10:56 AM, Jonathan Haddox via cctalk < > > cctalk@classiccmp.org> wrote: > > > > With SMD disks even harder to come by than MFM disks, has there > > been any plug-in replacements developed for them? I've seen MFM > > disk emulators, haven't seen SMD ones though, anyone know if they > > exist? It exists SMD disk replacement (ARAID for example, but they are somewhat expensive but...)
Re: SMD disks
On Fri, Aug 30, 2019 at 2:06 PM Guy Sotomayor Jr via cctalk wrote: > I’m actively working on SMD and ESDI emulators. However, given my work > schedule this is a long term project. :-( That's awesome. I have a number of SMD and ESDI controllers for workstations and minicomputers. In particular, ESDI and SMD for Qbus, in multiple SI9900 boxes (MASSBUS-SMD), and in an oddball 3rd-party box with a dual SDI-ESDI interface (with a pair of working 600MB drives, at least the last time I powered it on). It would be fantastic to hang emulated drives off the boards I have. Looking forward to the eventual launch! -ethan
Re: TRS-80 Fireworks
On Wed, 28 Aug 2019, Peter Coghlan via cctalk wrote: I've had several instances of it with BBC Micros, also containing Astec brand power supplies. Typically, when switched on after a long period of idleness, the machine works fine for minutes to hours, then there is a quiet pop followed by a whoosing noise and smoke starts pouring of the mains filter capacitor while the machine continues to work away quite happily. Sometimes not even a pop: https://unicorn.drogon.net/bbcSmoke.jpg Biggest bang I've had was from an Apple //e PSU.. But yes - SOP: Change the X2's... Gordon
Re: SMD disks
I’m actively working on SMD and ESDI emulators. However, given my work schedule this is a long term project. :-( TTFN - Guy > On Aug 30, 2019, at 10:56 AM, Jonathan Haddox via cctalk > wrote: > > With SMD disks even harder to come by than MFM disks, has there been any > plug-in replacements developed for them? I've seen MFM disk emulators, > haven't seen SMD ones though, anyone know if they exist?
Re: SMD disks
With SMD disks even harder to come by than MFM disks, has there been any plug-in replacements developed for them? I've seen MFM disk emulators, haven't seen SMD ones though, anyone know if they exist?
Re: Current MANX location
ons 2019-08-21 klockan 18:30 +0100 skrev Antonio Carlini via cctalk: > On 21/08/2019 15:46, Noel Chiappa via cctalk wrote: > > I have mixed reactions to it. I use it some, often to see if > > something is > > online at all. (If I buy a manual, I usually check, to see if I > > need to > > scan it, and get it to Al. Have a backlog at the moment, sigh.) > > > > The problem is that there are 'false negatives'; i.e. entries where > > they say 'none known online', but which are available. > > It is (AFAIK) a one-person effort (although it's now on its second > person after the originator dropped out). > > > There's always been a link to create a "bug report" for missing > manuals > (or incorrect ones I guess). However that points at codeplex, which > MS > have made read-only, so I don't know what the correct mechanism might > be > to get things fixed. I guess the owner needs to move the code > somewhere > else ... > > would something like mender.io be something like that ?
RE: VCF Berlin
What are the opening times? I think I might manage a Sunday but don't arrive at TXL until 10:55 Dave > -Original Message- > From: cctalk On Behalf Of Angelo Papenhoff > via cctalk > Sent: 30 August 2019 09:38 > To: cctalk@classiccmp.org > Subject: VCF Berlin > > So many VCFs happening in the US but we have them in Europe too! > VCF Berlin is not even two months away (Oct 12th and 13th) and you can still > register as an exhibitor till Sept 8th. > Our special topic this year will be Computer from Germany. > The show will be located at the Technikmuseum (do I need to translate > that?) which is itself worth a visit. > > So please attend, as exhibitor or visitor, admission is free! > > For more information and a list of exhibitions see > https://vcfb.de/2019/index.html.en > https://vcfb.de/2019/ausstellungen.html.en > > Hope to see you there, > Angelo/aap
Re: VCF Berlin
On 30/08/19, Stefan Skoglund wrote: > > The old Anhalter bahnhof ? That's the one.
Re: VCF Berlin
fre 2019-08-30 klockan 10:37 +0200 skrev Angelo Papenhoff via cctalk: > So many VCFs happening in the US but we have them in Europe too! > VCF Berlin is not even two months away (Oct 12th and 13th) and > you can still register as an exhibitor till Sept 8th. > Our special topic this year will be Computer from Germany. > The show will be located at the Technikmuseum (do I need to translate > that?) which is itself worth a visit. > > So please attend, as exhibitor or visitor, admission is free! > > For more information and a list of exhibitions see > https://vcfb.de/2019/index.html.en > https://vcfb.de/2019/ausstellungen.html.en > > Hope to see you there, > Angelo/aap The old Anhalter bahnhof ?
VCF Berlin
So many VCFs happening in the US but we have them in Europe too! VCF Berlin is not even two months away (Oct 12th and 13th) and you can still register as an exhibitor till Sept 8th. Our special topic this year will be Computer from Germany. The show will be located at the Technikmuseum (do I need to translate that?) which is itself worth a visit. So please attend, as exhibitor or visitor, admission is free! For more information and a list of exhibitions see https://vcfb.de/2019/index.html.en https://vcfb.de/2019/ausstellungen.html.en Hope to see you there, Angelo/aap
Re: SMD disks
Hi Alan, >3. The system "ran when parked" about a dozen years ago, but it was left >in an open barn after that. How likely is it that the disks will work >and be readable? One is a Fujitsu M2333; don't recall what they other >one is. > Alan, I have a few of these drives of which two were stored in a humid environment before I got them. There was rust everywhere... After a bit of cleaning, they both worked fine, formatting and checking was successful. In my experience, the 8" Fujitsu SMD drives are rock-solid, all of my drives work, never had issues, even after years of storage. It's a very different story with the 10.5" Fujitsu Super Eagles... Talking about such drives, did anybody ever come across some manuals for the Super Eages M2361A? There are M2351 Eagle manuals online, but not for the Super Eagles which are different. Never came across a paper version, either. Best regards, Pierre
