Commodore 64 diagnostics help / August Workshop
Gents- My son is working on a garage sale Commodore 64 that starts up and produces the standard blue C-64 background screen, but shows a bunch of random characters instead of the normal boot up. We're told that this might indicate a bad RAM chip and that a diagnostic test cartridge might reveals which chip is bad. Would anyone good with Commodore and attending on Saturday (24 AUG) be willing to bring along one of that and help us run a test? Thx! Mike Pohl
I’ve seen C64s getting repaired EVERY repair day I’ve been to this year! It seems like the one constant that gets worked on :) -andy
On Aug 16, 2019, at 9:34 PM, Michael Pohl via vcf-midatlantic <vcf-midatlantic@lists.vcfed.org> wrote:
Gents-
My son is working on a garage sale Commodore 64 that starts up and produces the standard blue C-64 background screen, but shows a bunch of random characters instead of the normal boot up. We're told that this might indicate a bad RAM chip and that a diagnostic test cartridge might reveals which chip is bad. Would anyone good with Commodore and attending on Saturday (24 AUG) be willing to bring along one of that and help us run a test?
Thx!
Mike Pohl
We're told that this might indicate a bad RAM chip and that a diagnostic test cartridge might reveals which chip is bad. Would anyone good with Commodore and attending on Saturday (24 AUG) be willing to bring along one of that and help us run a test? Jeff B. will be there Saturday after 5pm; he knows how to use the cartridge. Todd will be there in the daytime; I assume he knows, too.
Michael, I left a diagnostic cartridge, dead test and diagnostic harness for you in the museum. @Evan can give it to you on Saturday. @Todd can help you with it. Jeff Brace On Fri, Aug 16, 2019 at 11:44 PM Evan Koblentz via vcf-midatlantic < vcf-midatlantic@lists.vcfed.org> wrote:
We're told that this might indicate a bad RAM chip and that a diagnostic test cartridge might reveals which chip is bad. Would anyone good with Commodore and attending on Saturday (24 AUG) be willing to bring along one of that and help us run a test? Jeff B. will be there Saturday after 5pm; he knows how to use the cartridge. Todd will be there in the daytime; I assume he knows, too.
-- ========================================= Jeff Brace Vice President Vintage Computer Federation
Thanks Jeff! We really appreciate that. Mike On Sunday, August 18, 2019, Jeffrey Brace via vcf-midatlantic < vcf-midatlantic@lists.vcfed.org> wrote:
Michael,
I left a diagnostic cartridge, dead test and diagnostic harness for you in the museum. @Evan can give it to you on Saturday. @Todd can help you with it.
Jeff Brace
On Fri, Aug 16, 2019 at 11:44 PM Evan Koblentz via vcf-midatlantic < vcf-midatlantic@lists.vcfed.org> wrote:
We're told that this might indicate a bad RAM chip and that a
diagnostic
test cartridge might reveals which chip is bad. Would anyone good with Commodore and attending on Saturday (24 AUG) be willing to bring along one of that and help us run a test? Jeff B. will be there Saturday after 5pm; he knows how to use the cartridge. Todd will be there in the daytime; I assume he knows, too.
-- ========================================= Jeff Brace Vice President Vintage Computer Federation
I left a diagnostic cartridge, dead test and diagnostic harness for you in the museum. @Evan can give it to you on Saturday.
Where in the museum? On Sun, Aug 18, 2019, 7:11 PM Jeffrey Brace <jeffrey@vcfed.org> wrote:
Michael,
I left a diagnostic cartridge, dead test and diagnostic harness for you in the museum. @Evan can give it to you on Saturday. @Todd can help you with it.
Jeff Brace
On Fri, Aug 16, 2019 at 11:44 PM Evan Koblentz via vcf-midatlantic < vcf-midatlantic@lists.vcfed.org> wrote:
We're told that this might indicate a bad RAM chip and that a diagnostic test cartridge might reveals which chip is bad. Would anyone good with Commodore and attending on Saturday (24 AUG) be willing to bring along one of that and help us run a test? Jeff B. will be there Saturday after 5pm; he knows how to use the cartridge. Todd will be there in the daytime; I assume he knows, too.
-- ========================================= Jeff Brace Vice President Vintage Computer Federation
On Sun, Aug 18, 2019 at 7:34 PM Evan Koblentz <evan@vcfed.org> wrote:
I left a diagnostic cartridge, dead test and diagnostic harness for you in the museum. @Evan can give it to you on Saturday.
Where in the museum?
On the table.
On Sun, Aug 18, 2019, 7:11 PM Jeffrey Brace <jeffrey@vcfed.org> wrote:
Michael,
I left a diagnostic cartridge, dead test and diagnostic harness for you in the museum. @Evan can give it to you on Saturday. @Todd can help you with it.
Jeff Brace
On Fri, Aug 16, 2019 at 11:44 PM Evan Koblentz via vcf-midatlantic < vcf-midatlantic@lists.vcfed.org> wrote:
We're told that this might indicate a bad RAM chip and that a diagnostic test cartridge might reveals which chip is bad. Would anyone good with Commodore and attending on Saturday (24 AUG) be willing to bring along one of that and help us run a test? Jeff B. will be there Saturday after 5pm; he knows how to use the cartridge. Todd will be there in the daytime; I assume he knows, too.
-- ========================================= Jeff Brace Vice President Vintage Computer Federation
-- ========================================= Jeff Brace Vice President Vintage Computer Federation
Jeff, Thanks again for letting us borrow your stuff. We sucessfully identified two bad RAM chips, replaced them, and left with a workign computer. Mike On Sun, Aug 18, 2019 at 9:13 PM Jeffrey Brace via vcf-midatlantic < vcf-midatlantic@lists.vcfed.org> wrote:
On Sun, Aug 18, 2019 at 7:34 PM Evan Koblentz <evan@vcfed.org> wrote:
I left a diagnostic cartridge, dead test and diagnostic harness for you in the museum. @Evan can give it to you on Saturday.
Where in the museum?
On the table.
On Sun, Aug 18, 2019, 7:11 PM Jeffrey Brace <jeffrey@vcfed.org> wrote:
Michael,
I left a diagnostic cartridge, dead test and diagnostic harness for you in the museum. @Evan can give it to you on Saturday. @Todd can help you with it.
Jeff Brace
On Fri, Aug 16, 2019 at 11:44 PM Evan Koblentz via vcf-midatlantic < vcf-midatlantic@lists.vcfed.org> wrote:
We're told that this might indicate a bad RAM chip and that a diagnostic test cartridge might reveals which chip is bad. Would anyone good with Commodore and attending on Saturday (24 AUG) be willing to
bring
along one of that and help us run a test? Jeff B. will be there Saturday after 5pm; he knows how to use the cartridge. Todd will be there in the daytime; I assume he knows, too.
-- ========================================= Jeff Brace Vice President Vintage Computer Federation
-- ========================================= Jeff Brace Vice President Vintage Computer Federation
On Sat, Aug 24, 2019 at 7:35 PM Michael Pohl via vcf-midatlantic < vcf-midatlantic@lists.vcfed.org> wrote:
Jeff,
Thanks again for letting us borrow your stuff. We sucessfully identified two bad RAM chips, replaced them, and left with a workign computer.
Great! That’s what our repair workshops are all about! Glad that I could supply some tools to help. :-)
Mike
On Sun, Aug 18, 2019 at 9:13 PM Jeffrey Brace via vcf-midatlantic < vcf-midatlantic@lists.vcfed.org> wrote:
On Sun, Aug 18, 2019 at 7:34 PM Evan Koblentz <evan@vcfed.org> wrote:
I left a diagnostic cartridge, dead test and diagnostic harness for you in the museum. @Evan can give it to you on Saturday.
Where in the museum?
On the table.
On Sun, Aug 18, 2019, 7:11 PM Jeffrey Brace <jeffrey@vcfed.org> wrote:
Michael,
I left a diagnostic cartridge, dead test and diagnostic harness for you in the museum. @Evan can give it to you on Saturday. @Todd can help you with it.
Jeff Brace
On Fri, Aug 16, 2019 at 11:44 PM Evan Koblentz via vcf-midatlantic < vcf-midatlantic@lists.vcfed.org> wrote:
We're told that this might indicate a bad RAM chip and that a diagnostic test cartridge might reveals which chip is bad. Would
anyone
good with Commodore and attending on Saturday (24 AUG) be willing to bring along one of that and help us run a test? Jeff B. will be there Saturday after 5pm; he knows how to use the cartridge. Todd will be there in the daytime; I assume he knows, too.
-- ========================================= Jeff Brace Vice President Vintage Computer Federation
-- ========================================= Jeff Brace Vice President Vintage Computer Federation
-- ========================================= Jeff Brace Vice President Vintage Computer Federation
participants (4)
-
Andrew Diller -
Evan Koblentz -
Jeffrey Brace -
Michael Pohl