[cctalk] Re: One of Paul Allen's Museums

2023-04-23 Thread ED SHARPE via cctalk
Bad link  Zane I get a weird  screen from the timeEd# Sent from AOL on Android On Sun, Apr 23, 2023 at 10:29 PM, Zane Healy via cctalk wrote: It looks like his air museum was acquired by one of the Walmart heirs.

[cctalk] One of Paul Allen's Museums

2023-04-23 Thread Zane Healy via cctalk
It looks like his air museum was acquired by one of the Walmart heirs. https://www.seattletimes.com/business/boeing-aerospace/after-3-years-flying-heritage-museum-to-reopen-in-everett/ After 3 years, Flying Heritage Museum to reopen in Everett seattletimes.com I wonder if something like this

[cctalk] Re: Magazine no longer in print

2023-04-23 Thread Tarek Hoteit via cctalk
Great. That works. Regards, Tarek Hoteit https://ne.thote.it/@tarek > On Apr 23, 2023, at 4:22 PM, KenUnix via cctalk wrote: > > Tarek, > > Try here: https://linuxnewmedia.square.site/shop/linux-magazine/2 > > Ken > >> On Sun, Apr 23, 2023 at 7:07 PM Tarek Hoteit via cctalk < >>

[cctalk] Re: Magazine no longer in print

2023-04-23 Thread KenUnix via cctalk
Tarek, Try here: https://linuxnewmedia.square.site/shop/linux-magazine/2 Ken On Sun, Apr 23, 2023 at 7:07 PM Tarek Hoteit via cctalk < cctalk@classiccmp.org> wrote: > Seems Linux-magazine.com print order option is down. I get 404 not found > error when I click on order print issue. > >

[cctalk] Re: flipchip cleaning and pin corrosion inhibition

2023-04-23 Thread Warner Losh via cctalk
On Sun, Apr 23, 2023, 3:56 PM W2HX via cctalk wrote: > I might be concerned about putting carbon comp resistors in the dishwasher > as they are hygroscopic. > > From an Ohmite datasheet: > https://www.mouser.com/datasheet/2/303/res_od_of_oa-180619.pdf > > "Carbon composition resistors are highly

[cctalk] Re: Schematics for Lear Siegler ADM31?

2023-04-23 Thread John Robertson via cctalk
On 2023/04/23 3:16 p.m., Glen Slick via cctalk wrote: On Sun, Apr 23, 2023 at 3:10 PM John Robertson via cctalk wrote: Oh, I am missing two key caps for the ADM31, anyone have spares? Not sure what is printed on them at this point, but any caps would be better than missing ones to start!

[cctalk] Re: Magazine no longer in print

2023-04-23 Thread Tarek Hoteit via cctalk
Seems Linux-magazine.com print order option is down. I get 404 not found error when I click on order print issue. Regards, Tarek Hoteit https://ne.thote.it/@tarek > On Apr 23, 2023, at 5:55 AM, KenUnix via cctalk wrote: > > Linux Journal is now Linux Magazine and is *available in print* at:

[cctalk] Re: Schematics for Lear Siegler ADM31?

2023-04-23 Thread Glen Slick via cctalk
On Sun, Apr 23, 2023 at 3:10 PM John Robertson via cctalk wrote: > > Oh, I am missing two key caps for the ADM31, anyone have spares? Not > sure what is printed on them at this point, but any caps would be better > than missing ones to start! Keyboard photo to see what key caps are missing:

[cctalk] Re: Schematics for Lear Siegler ADM31?

2023-04-23 Thread John Robertson via cctalk
On 2023/04/18 8:48 p.m., Tony Duell via cctalk wrote: On Wed, Apr 19, 2023 at 2:37 AM Tom Hunter via cctalk wrote: ... or four $20 power transistors to protect a 10 cent fuse like on the DEC VR-14 display. In general the transistor(s) will fail short-circuit, thus taking out the fuse too.

[cctalk] Re: flipchip cleaning and pin corrosion inhibition

2023-04-23 Thread W2HX via cctalk
I might be concerned about putting carbon comp resistors in the dishwasher as they are hygroscopic. From an Ohmite datasheet: https://www.mouser.com/datasheet/2/303/res_od_of_oa-180619.pdf "Carbon composition resistors are highly hygroscopic and changes in resistance value can occur if too

[cctalk] Re: flipchip cleaning and pin corrosion inhibition

2023-04-23 Thread KenUnix via cctalk
Pete, Did the 8E have core or solid state memory? Ken On Sun, Apr 23, 2023 at 4:06 PM Pete Turnbull via cctalk < cctalk@classiccmp.org> wrote: > On 23/04/2023 17:54, Fritz Mueller via cctalk wrote: > > > I’ve been eying the dishwasher, for the subset of flip chips that that > are just DIP

[cctalk] Re: Rainbow H7842 PSU Fault

2023-04-23 Thread Brent Hilpert via cctalk
On 2023-Apr-23, at 8:04 AM, Peter Coghlan via cctalk wrote: ... > This should result in a current > of about 45 microamps flowing to ground through those components mentioned. ... > It ought to be possible to measure the same 0.6V across the diode to confirm > this is where it is being dropped

[cctalk] Re: flipchip cleaning and pin corrosion inhibition

2023-04-23 Thread Pete Turnbull via cctalk
On 23/04/2023 17:54, Fritz Mueller via cctalk wrote: I’ve been eying the dishwasher, for the subset of flip chips that that are just DIP logic, carbon comp resistors, and ceramic bypass caps, anyway. But I haven’t been brave enough to try that yet... Most of the logic here has date codes

[cctalk] Re: flipchip cleaning and pin corrosion inhibition

2023-04-23 Thread John Robertson via cctalk
On 2023/04/23 10:00 a.m., Paul Koning via cctalk wrote: On Apr 23, 2023, at 12:54 PM, Fritz Mueller via cctalk wrote: Hi folks, I’ve been picking my way through a PDP-8/L restoration lately. I’ve found that everything in the machine is covered with a uniform layer of dark “soot” (enough

[cctalk] Re: flipchip cleaning and pin corrosion inhibition

2023-04-23 Thread Paul Koning via cctalk
> On Apr 23, 2023, at 12:54 PM, Fritz Mueller via cctalk > wrote: > > Hi folks, > > I’ve been picking my way through a PDP-8/L restoration lately. I’ve found > that everything in the machine is covered with a uniform layer of dark “soot” > (enough to blacken your hands while working with

[cctalk] flipchip cleaning and pin corrosion inhibition

2023-04-23 Thread Fritz Mueller via cctalk
Hi folks, I’ve been picking my way through a PDP-8/L restoration lately. I’ve found that everything in the machine is covered with a uniform layer of dark “soot” (enough to blacken your hands while working with it) which I would like to clean up. Perhaps the “soot” is actually from a

[cctalk] Re: Rainbow H7842 PSU Fault

2023-04-23 Thread Peter Coghlan via cctalk
Hi Rob, > > Thanks for the various replies. Here are my responses and further > observations. > > I was asked if I had a load on the PSU while bench testing it. The answer to > that is no. > I initially thought that the +0.6V on the -12V line might have been arriving there via a load which was

[cctalk] Re: Rainbow H7842 PSU Fault

2023-04-23 Thread Rob Jarratt via cctalk
Thanks for the various replies. Here are my responses and further observations. I was asked if I had a load on the PSU while bench testing it. The answer to that is no. I did check the two diodes around the -12V current sensing resistor (PSU Sheet 3), but as was pointed out the current sensing

[cctalk] Re: Magazine no longer in print

2023-04-23 Thread KenUnix via cctalk
Linux Journal is now Linux Magazine and is *available in print* at: https://www.linux-magazine.com/ and special editions at: https://www.linux-magazine.com/Resources/Special-Editions Ken On Sat, Apr 22, 2023 at 1:14 PM Chuck Guzis via cctalk < cctalk@classiccmp.org> wrote: > My "answering

[cctalk] Re: ESDI drive imaging

2023-04-23 Thread Mattis Lind via cctalk
Den sön 23 apr. 2023 kl 08:34 skrev Christopher Zach via cctalk < cctalk@classiccmp.org>: > Not that I know of. Esdi has a much faster data rate and I think that > outstrips the BBB solution. > Not necessarily. Yes, data rates are faster in ESDI. Up to 24 MHz and perhaps higher. But in ESDI

[cctalk] Re: ESDI drive imaging

2023-04-23 Thread Christopher Zach via cctalk
Not that I know of. Esdi has a much faster data rate and I think that outstrips the BBB solution. C On April 22, 2023 6:18:39 PM EDT, Dennis Boone via cctalk wrote: >I think I know the answer to this, but just in case: > >Is there a way to image ESDI disks other than to hook them up to their