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Updated 2023-07-12: Hello, Guest! Welcome back, and be sure to check out
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jmacz's latest activity
jmacz
replied to the thread
SuperMac Spectrum 24 Series I
.
It was the lighting. The area on the backside of the DACs look fine. There should be at least one crystal installed right? For this...
Mar 12, 2024
jmacz
replied to the thread
SuperMac Spectrum 24 Series I
.
@MacOSMonkey the card I mentioned arrived. ☝️
Mar 10, 2024
jmacz
posted the thread
SuperMac Spectrum 24 Series I
in
Peripherals
.
Took delivery on what appears to be the first version of the SuperMac Spectrum 24. It is however not working. No video output...
Mar 10, 2024
jmacz
replied to the thread
SuperMac PDQ, Spectrum 8, 24, Thunder ROMs
.
Attached the v1.0 ROM for the original SuperMac Spectrum 24 (series I, I guess?). Looks to be 16K and inverted. Checksum was valid after...
Mar 10, 2024
jmacz
replied to the thread
PowerBook 500 Series full 040 CPU swap
.
Ooh, interested to see how this turns out!
Mar 8, 2024
jmacz
replied to the thread
SuperMac Spectrum 24/V Display Problems
.
As I thought about this some more, the problem I was seeing was traced to the data coming from U19 VRAM chip pin 26 and destined for...
Mar 7, 2024
jmacz
replied to the thread
SuperMac Spectrum 24/V Display Problems
.
Cool, thanks again! (y)
Mar 6, 2024
jmacz
replied to the thread
SuperMac Spectrum 24/V Display Problems
.
I do have a spare BT473 110 so I can try that to rule out the DAC when I get some time.
Mar 5, 2024
jmacz
replied to the thread
SuperMac Spectrum 24/V Display Problems
.
Just to avoid confusion, FYI that the colors I used in the diagram are just to group the pins to a particular destination chip (BSR vs...
Mar 5, 2024
jmacz
replied to the thread
SuperMac Spectrum 24/V Display Problems
.
Got back from a long business trip and played with this again today -- still no progress. Found: 2 SMD resistors with hairline cracks...
Mar 4, 2024
jmacz
replied to the thread
SuperMac PDQ, Spectrum 8, 24, Thunder ROMs
.
What is the latest ROM for an original (first series) SuperMac Spectrum 24?
Mar 3, 2024
jmacz
replied to the thread
PowerBook 5300 Series Battery
.
What’s wrong with the barrel jack? FYI, I replaced mine with a modern 5.5mm jack: Post in thread 'PowerBook 5300c / 5300cs Restoration...
Feb 29, 2024
jmacz
replied to the thread
jmacz journey
.
Actually I was wrong, I did try Compact Virtual 3.0 and it didn’t work. I mentioned it earlier, I just forgot. But, I did not try 7.1...
Feb 28, 2024
jmacz
replied to the thread
jmacz journey
.
Your Warp 030 Control looks slightly different than the version I am using if I remember correctly. Could you possibly share the version...
Feb 27, 2024
jmacz
replied to the thread
Static sound issues for an SE/30 on startup linked to SCSI
.
The last thread you linked is from my adventures with an SE/30. Looks like you have focused on the caps in the sound circuit. But take...
Feb 25, 2024
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