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jmacz's latest activity
jmacz
replied to the thread
SE/30 Board Mystery Issue
.
Not sure if it’s just the pictures… but there seems to be a lot of broken traces around C9 and UJ11. I had lots of problems on my SE/30...
Wednesday at 5:47 AM
jmacz
replied to the thread
croissantking's conquests
.
Were they pre built or did you solder/weld the tabs yourself? Nice!
Monday at 6:10 AM
jmacz
replied to the thread
PowerBook 540c screen issue
.
Note the ribbon cables sometimes visually look ok when they aren’t. Won’t know until you beep out each pin on both ends with a...
Apr 18, 2024
jmacz
replied to the thread
SuperMac Spectrum 24/V Display Problems
.
Yes, mental typo. Had in my mind cleared the BSRs and the DAC so mentally kept referring to them as a unit and wrote it down that way...
Apr 18, 2024
jmacz
replied to the thread
SuperMac Spectrum 24/V Display Problems
.
That additional column I stumbled upon (driven by VRAM Chip U12 pin 2) was a different problem. I found a shorted set of pins on SMT02...
Apr 18, 2024
jmacz
replied to the thread
SuperMac Spectrum 24/V Display Problems
.
More progress while in Black and White mode. The vertical line artifact I have been chasing is from VRAM Chip U19 pin 26 which goes to...
Apr 18, 2024
jmacz
replied to the thread
SuperMac Spectrum 24/V Display Problems
.
I'm a bit concerned about drilling especially because it may be difficult to figure out the path of an internal trace? I was thinking...
Apr 16, 2024
jmacz
replied to the thread
Seeking beta testers for Mac Sync-inator VGA sync converter
.
Congrats! Really cool watching you run into a problem and then building a product to solve it! :)
Apr 16, 2024
jmacz
replied to the thread
SuperMac Spectrum 24/V Display Problems
.
Ok, finally made a bit more progress on this particular card this evening. The RAMDACs seem fine. I was able to individually tie the...
Apr 16, 2024
jmacz
replied to the thread
PowerBook 500 Series Battery Rebuild Failure (Oops, all dead EMMs!)
.
You might be right... both of my working batteries had Sanyo cells in them.
Apr 16, 2024
jmacz
replied to the thread
Design68: A 65% replacement keyboard using AppleDesign controllers
.
Ok cool, thanks for confirming! Nice!!
Apr 16, 2024
jmacz
replied to the thread
SuperMac Spectrum/24 Series III Display Artifact Issue
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Yup, there was enough clearance luckily! LOL!
Apr 16, 2024
jmacz
replied to the thread
SuperMac Spectrum/24 Series III Display Artifact Issue
.
Hmm, I'm actually not sure what I was writing there... I think I was trying to say more easily probed the voltage since the card was...
Apr 16, 2024
jmacz
replied to the thread
SuperMac Spectrum/24 Series III Display Artifact Issue
.
I was able to get the card working again. Hopefully this time it sticks. Recap of Problem: various artifacts appearing all over the...
Apr 15, 2024
jmacz
replied to the thread
Design68: A 65% replacement keyboard using AppleDesign controllers
.
@demik for the four LEDs, the accent and caps lock ones are working fine for me (accent is always on and caps lock is on when caps lock...
Apr 13, 2024
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