David Cook's latest activity
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Board Nominations
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David Cook replied to the thread Fixing a Macintosh Portable - What worked for me.I just repaired another Portable that was crashing when sound played. I decided to put this board in my ultrasonic cleaner. Afterwards... -
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David Cook replied to the thread LC575 computer killed LC520 motherboard! 😭.It might just be a bad joint (your solder joints seem good). I've had capacitor gunk get under a leg and eventually disconnect when...
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David Cook replied to the thread LC575 computer killed LC520 motherboard! 😭.I agree with @Fizzbinn that it is more likely that something simple went wrong with the board in storage (or when being jostled during...
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David Cook replied to the thread LC575 computer killed LC520 motherboard! 😭.With the motherboard removed, do you measure a short between +5V and gnd on the motherboard?
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David Cook replied to the thread LC575 computer killed LC520 motherboard! 😭.It sounds like you have short between +5V power and ground. Do you have any tantalum caps?
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David Cook replied to the thread Black-Ball ADB Mouse Serial Numbers and Portable.Cool! Thank you for the confirmation.
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David Cook replied to the thread Apple Desktop Bus Mice and Power Usage.Thank you. Yes, there is definitely a black-ball mouse prior to the low-power version. I assume yours does not have this symbol on it:
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David Cook replied to the thread PowerBook 100 & 170 owners.To avoid hijacking your thread on the PowerBook, I've updated my journey to find the Portable mouse here...
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David Cook posted the thread Black-Ball ADB Mouse Serial Numbers and Portable in Add-ons, Peripherals & Networking.@JDW posted some interesting Apple TIL articles back on thread regarding the PowerBook 100 and 170. One of those articles refers to the...
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David Cook replied to the thread Opening an oscillator can to determine cause of failure.FYI. On early Macintosh II motherboards, some engineer got overzealous with the ground loop. They connected pin 1 to pin 4/7 GND. I...
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David Cook replied to the thread Macintosh Slice - a Pre-release Color Classic.A couple of things I forgot on my original post. 1. Someone added an FPU. That's nice. 2. But, they only added two 1 MB sticks of...
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David Cook replied to the thread Macintosh Slice - a Pre-release Color Classic.Just got lucky on eBay. The moment I saw no label I clicked 'Buy It Now'. The seller said "Wow, I just listed that."
