Apple II+ lockup as system warms up

[cosam]

I checked out the 555, and found that, rather than just sending a pulse at startup, the the timer was holding this line high, (thereby bringing the RESET line low). I traced the fault to a faulty capacitor in the associated circuitry.

Capacitor replaced and the machine is back to full working condition!

Steady on, Tez - at this rate you'll have nothing left to fix and be left wondering what to do with yourself! ;-) Nice work, you're really getting the hang of this now.

 

[tezza]

Steady on, Tez - at this rate you'll have nothing left to fix and be left wondering what to do with yourself! ;-) .

Is there ever nothing left to fix when you have vintage computers?

Nice work, you're really getting the hang of this now.

Thanks. Yes it's starting to gel. I can feel that CP/M N8VEM project getting ever closer..lol

Tez

 

[Terry Yager]

I can feel that CP/M N8VEM project getting ever closer..lol

Tez

Jump in, d00d! I'm half as smart as you, and I'm working on it...how hard can it be? All the work has been done already, if ya have the time to read up on it all.

--T

 

[mwillegal]

Steady on, Tez - at this rate you'll have nothing left to fix and be left wondering what to do with yourself! ;-) Nice work, you're really getting the hang of this now.

I have a board that I expect would keep him busy for months! New intermittent failures a week or two after each repair it's had.

Regards,
Mike Willegal

 

[Terry Yager]

I hate intermittent faults! Every time ya go to fix it, it ain't broke...Gaaarrr!!!

--T