October 29th, 2016

Open Apple #64 (October 2016) : John Brooks, Tiger Learning Computer, Softalk

This month on Open Apple, we share an excerpt of an interview with John Brooks, courtesy of Juiced.GS. John talks about how and why he updated ProDOS, and his experiences getting back into the community.

Tune in to hear Quinn lose 20 years of time perception around the Tiger Learning Computer, then pretend to know stuff about power supplies. Meanwhile, Mike waxes nostalgic about high school computer labs and tries to unload his excess Apple IIs on unsuspecting community members.

We try out a new segment this month, and we hope you like it! No spoilers- you’ll just have to listen and see what we’re up to.


Open Apple podcast

October 13th, 2016

DynaComp 240V power supply dissection

Long time Australian Apple // enthusiasts and full time technicians Dean Claxton and Mark Cummings, lamenting the lack of official documentation on power supply circuits, have reverse engineered a circuit diagram, schematic and a parts list for the DynaComp 240V power supply (model 699-00136) which was commonly used in the Platinum Apple //e. The DynaComp 110V power supplies are probably very similar and therefore these resources will be useful for troubleshooting those models too.

The article also discusses testing capacitors in-circuit using an ESR meter.

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