Repair Workshop reminder 1/14 & 1/15, 2023
Just reminding everyone that there is another repair workshop this coming Saturday and Sunday January 14 and 15. Signup here: https://docs.google.com/spreadsheets/d/1-CzOmtnbGWwcNc53ewymcAe1Zt5xNTow4cmn... ========================================= Jeff Brace VCF National Board Member Chairman & Vice President Vintage Computer Festival East Showrunner Vintage Computer Federation is a 501c3 charity https://vcfed.org/ <http://www.vcfed.org/> jeffrey@vcfed.org
On 1/8/23 14:27, Jeffrey Brace via vcf-midatlantic wrote:
Just reminding everyone that there is another repair workshop this coming Saturday and Sunday January 14 and 15. Signup here: https://docs.google.com/spreadsheets/d/1-CzOmtnbGWwcNc53ewymcAe1Zt5xNTow4cmn...
I've dropped off the OS9 68K system in the CDL. So I know it's there and I don't have to worry about letting the electronics warm to room level. I need to grab the OS9 disks so we can at least try the floppy (note to self, check the drive to see if it works before attempting to read the disks). I had some luck with the Liebert Controller board hacking. I burned a rom with 9600 baud and I'd get a version and prompt (Lilbug 1.0) but every 5s it would restart. Today I unsoldered the old MC6803 and soldered in a new socket, added a Hitachi HD6303 (improved MC6303) and did some searching with out the CPU. Reset sees a low (/RST) every 3s. So there is a watchdog timer setup. I traced it back to a MC14584B (yea!) which is a hex schmidt trigger (what? ;-) ). So I have to do some more tracing but the MC14584B is socketed so I'll build a manual reset circuit and figure out what is going on later. -- Linux Home Automation Neil Cherry kd2zrq@linuxha.com http://www.linuxha.com/ Main site http://linuxha.blogspot.com/ My HA Blog Author of: Linux Smart Homes For Dummies KD2ZRQ
I'll be bringing a grab-bag of projects, and will need help on a couple of them: 1. First project is a TV studio color CRT that worked when I found it, but didn't once I got home. If Ian is there, I suspect that it will take him a good 30 seconds to tell me where it all went wrong. 2. Second is a pair of PC-AT compatible PSUs that I have partially recapped, but which have still been giving me voltage issues (I can't recall what those issues are, but it won't take long to rediscover them). 3. Third project is a Mac SE given to me by a coworker, which needs to have its' Miniscribe 20MB hard disk imaged. The two or three remaining projects I am more self sufficient on 4. My Mac 512Ke is still giving me video issues, and I am suspecting cracked solider joints somewhere in the video circuit 5. My Mac Plus is having calibration issues with its' 800K floppy drive. 6. If the two BlueSCSIs I ordered happen to come in the mail tomorrow, I will have those to build as well. Regards, Dan FitzGerald They/Them/Theirs http://www.vm.ibm.com/devpages/dfitzger -----Original Message----- From: Neil Cherry via vcf-midatlantic <vcf-midatlantic@lists.vcfed.org> Reply-To: vcf-midatlantic <vcf-midatlantic@lists.vcfed.org> To: vcf-midatlantic <vcf-midatlantic@lists.vcfed.org> Cc: Neil Cherry <ncherry@linuxha.com> Subject: Re: [vcf-midatlantic] Repair Workshop reminder 1/14 & 1/15, 2023 Date: 01/08/2023 06:50:44 PM On 1/8/23 14:27, Jeffrey Brace via vcf-midatlantic wrote:
Just reminding everyone that there is another repair workshop this coming Saturday and Sunday January 14 and 15. Signup here: https://docs.google.com/spreadsheets/d/1-CzOmtnbGWwcNc53ewymcAe1Zt5xNTow4cmn...
I've dropped off the OS9 68K system in the CDL. So I know it's there and I don't have to worry about letting the electronics warm to room level. I need to grab the OS9 disks so we can at least try the floppy (note to self, check the drive to see if it works before attempting to read the disks). I had some luck with the Liebert Controller board hacking. I burned a rom with 9600 baud and I'd get a version and prompt (Lilbug 1.0) but every 5s it would restart. Today I unsoldered the old MC6803 and soldered in a new socket, added a Hitachi HD6303 (improved MC6303) and did some searching with out the CPU. Reset sees a low (/RST) every 3s. So there is a watchdog timer setup. I traced it back to a MC14584B (yea!) which is a hex schmidt trigger (what? ;-) ). So I have to do some more tracing but the MC14584B is socketed so I'll build a manual reset circuit and figure out what is going on later.
Figures... the one time I am not planning to be there as early as I usually do. I tend to get there between 5 and 6, but will probably arrive closer to 9 instead. I think that's around the time the other early arrivers get there. Jeff Salzman On Thu, Jan 12, 2023, 4:25 PM Dan FitzGerald via vcf-midatlantic < vcf-midatlantic@lists.vcfed.org> wrote:
I'll be bringing a grab-bag of projects, and will need help on a couple of them:
1. First project is a TV studio color CRT that worked when I found it, but didn't once I got home. If Ian is there, I suspect that it will take him a good 30 seconds to tell me where it all went wrong.
2. Second is a pair of PC-AT compatible PSUs that I have partially recapped, but which have still been giving me voltage issues (I can't recall what those issues are, but it won't take long to rediscover them).
3. Third project is a Mac SE given to me by a coworker, which needs to have its' Miniscribe 20MB hard disk imaged.
The two or three remaining projects I am more self sufficient on
4. My Mac 512Ke is still giving me video issues, and I am suspecting cracked solider joints somewhere in the video circuit
5. My Mac Plus is having calibration issues with its' 800K floppy drive.
6. If the two BlueSCSIs I ordered happen to come in the mail tomorrow, I will have those to build as well.
Regards, Dan FitzGerald They/Them/Theirs http://www.vm.ibm.com/devpages/dfitzger
-----Original Message----- From: Neil Cherry via vcf-midatlantic <vcf-midatlantic@lists.vcfed.org> Reply-To: vcf-midatlantic <vcf-midatlantic@lists.vcfed.org> To: vcf-midatlantic <vcf-midatlantic@lists.vcfed.org> Cc: Neil Cherry <ncherry@linuxha.com> Subject: Re: [vcf-midatlantic] Repair Workshop reminder 1/14 & 1/15, 2023 Date: 01/08/2023 06:50:44 PM
On 1/8/23 14:27, Jeffrey Brace via vcf-midatlantic wrote:
Just reminding everyone that there is another repair workshop this coming Saturday and Sunday January 14 and 15. Signup here:
https://docs.google.com/spreadsheets/d/1-CzOmtnbGWwcNc53ewymcAe1Zt5xNTow4cmn...
I've dropped off the OS9 68K system in the CDL. So I know it's there and I don't have to worry about letting the electronics warm to room level.
I need to grab the OS9 disks so we can at least try the floppy (note to self, check the drive to see if it works before attempting to read the disks).
I had some luck with the Liebert Controller board hacking. I burned a rom with 9600 baud and I'd get a version and prompt (Lilbug 1.0) but every 5s it would restart. Today I unsoldered the old MC6803 and soldered in a new socket, added a Hitachi HD6303 (improved MC6303) and did some searching with out the CPU. Reset sees a low (/RST) every 3s. So there is a watchdog timer setup. I traced it back to a MC14584B (yea!) which is a hex schmidt trigger (what? ;-) ). So I have to do some more tracing but the MC14584B is socketed so I'll build a manual reset circuit and figure out what is going on later.
Jeff, Just a reminder that I will be coming in on Friday evening with the other long distance out-of-towners (I'm assuming that Connor and Ian will be there early, as per usual). Regards, Dan FitzGerald They/Them/Theirs http://www.vm.ibm.com/devpages/dfitzger -----Original Message----- From: Jeffrey Brace via vcf-midatlantic <vcf-midatlantic@lists.vcfed.org> Reply-To: vcf-midatlantic <vcf-midatlantic@lists.vcfed.org> To: vcf-midatlantic <vcf-midatlantic@lists.vcfed.org> Cc: Jeffrey Brace <jeffrey@vcfed.org> Subject: [vcf-midatlantic] Repair Workshop reminder 1/14 & 1/15, 2023 Date: 01/08/2023 02:27:49 PM Just reminding everyone that there is another repair workshop this coming Saturday and Sunday January 14 and 15. Signup here: https://docs.google.com/spreadsheets/d/1-CzOmtnbGWwcNc53ewymcAe1Zt5xNTow4cmn... ========================================= Jeff Brace VCF National Board Member Chairman & Vice President Vintage Computer Festival East Showrunner Vintage Computer Federation is a 501c3 charity https://vcfed.org/ <http://www.vcfed.org/> jeffrey@vcfed.org
On Thu, Jan 12, 2023 at 4:18 PM Dan FitzGerald via vcf-midatlantic < vcf-midatlantic@lists.vcfed.org> wrote:
Jeff,
Just a reminder that I will be coming in on Friday evening with the other long distance out-of-towners (I'm assuming that Connor and Ian will be there early, as per usual).
You are welcome to comd Friday night. I believe that Connor, Ian and Jeff Salzman will be arriving Friday night as well.
I seemed to have performed a heinous error. I have arrived early for the Friday festivities, however I do not have the Knox code for CDL and I’m the first one here :) -Ian L. On Thu, Jan 12, 2023 at 23:08 Jeffrey Brace via vcf-midatlantic < vcf-midatlantic@lists.vcfed.org> wrote:
On Thu, Jan 12, 2023 at 4:18 PM Dan FitzGerald via vcf-midatlantic < vcf-midatlantic@lists.vcfed.org> wrote:
Jeff,
Just a reminder that I will be coming in on Friday evening with the other long distance out-of-towners (I'm assuming that Connor and Ian will be there early, as per usual).
You are welcome to comd Friday night.
I believe that Connor, Ian and Jeff Salzman will be arriving Friday night as well.
I'll be there in 20 minutes or so On Fri, Jan 13, 2023, 5:28 PM Ian Litchfield via vcf-midatlantic < vcf-midatlantic@lists.vcfed.org> wrote:
I seemed to have performed a heinous error.
I have arrived early for the Friday festivities, however I do not have the Knox code for CDL and I’m the first one here :)
-Ian L.
On Thu, Jan 12, 2023 at 23:08 Jeffrey Brace via vcf-midatlantic < vcf-midatlantic@lists.vcfed.org> wrote:
On Thu, Jan 12, 2023 at 4:18 PM Dan FitzGerald via vcf-midatlantic < vcf-midatlantic@lists.vcfed.org> wrote:
Jeff,
Just a reminder that I will be coming in on Friday evening with the other long distance out-of-towners (I'm assuming that Connor and Ian will be there early, as per usual).
You are welcome to comd Friday night.
I believe that Connor, Ian and Jeff Salzman will be arriving Friday night as well.
I am over at 9032 the radio guys are having a meeting and i introduced myself On Fri, Jan 13, 2023 at 18:08 Jeff S via vcf-midatlantic < vcf-midatlantic@lists.vcfed.org> wrote:
I'll be there in 20 minutes or so
On Fri, Jan 13, 2023, 5:28 PM Ian Litchfield via vcf-midatlantic < vcf-midatlantic@lists.vcfed.org> wrote:
I seemed to have performed a heinous error.
I have arrived early for the Friday festivities, however I do not have the Knox code for CDL and I’m the first one here :)
-Ian L.
On Thu, Jan 12, 2023 at 23:08 Jeffrey Brace via vcf-midatlantic < vcf-midatlantic@lists.vcfed.org> wrote:
On Thu, Jan 12, 2023 at 4:18 PM Dan FitzGerald via vcf-midatlantic < vcf-midatlantic@lists.vcfed.org> wrote:
Jeff,
Just a reminder that I will be coming in on Friday evening with the other long distance out-of-towners (I'm assuming that Connor and Ian will be there early, as per usual).
You are welcome to comd Friday night.
I believe that Connor, Ian and Jeff Salzman will be arriving Friday night as well.
Take your time. They're a great group to talk to. I have CDL open now. On Fri, Jan 13, 2023, 6:46 PM Ian Litchfield via vcf-midatlantic < vcf-midatlantic@lists.vcfed.org> wrote:
I am over at 9032 the radio guys are having a meeting and i introduced myself
On Fri, Jan 13, 2023 at 18:08 Jeff S via vcf-midatlantic < vcf-midatlantic@lists.vcfed.org> wrote:
I'll be there in 20 minutes or so
On Fri, Jan 13, 2023, 5:28 PM Ian Litchfield via vcf-midatlantic < vcf-midatlantic@lists.vcfed.org> wrote:
I seemed to have performed a heinous error.
I have arrived early for the Friday festivities, however I do not have the Knox code for CDL and I’m the first one here :)
-Ian L.
On Thu, Jan 12, 2023 at 23:08 Jeffrey Brace via vcf-midatlantic < vcf-midatlantic@lists.vcfed.org> wrote:
On Thu, Jan 12, 2023 at 4:18 PM Dan FitzGerald via vcf-midatlantic < vcf-midatlantic@lists.vcfed.org> wrote:
Jeff,
Just a reminder that I will be coming in on Friday evening with the other long distance out-of-towners (I'm assuming that Connor and Ian will be there early, as per usual).
You are welcome to comd Friday night.
I believe that Connor, Ian and Jeff Salzman will be arriving Friday night as well.
participants (5)
-
Dan FitzGerald -
Ian Litchfield -
Jeff S -
Jeffrey Brace -
Neil Cherry