TRS-80 Fireworks

Gordon Henderson gordon+cctalk at
Fri Aug 30 15:07:56 CDT 2019

On Wed, 28 Aug 2019, Peter Coghlan via cctalk wrote:

> I've had several instances of it with BBC Micros, also containing Astec brand
> power supplies.  Typically, when switched on after a long period of idleness,
> the machine works fine for minutes to hours, then there is a quiet pop followed
> by a whoosing noise and smoke starts pouring of the mains filter capacitor
> while the machine continues to work away quite happily.

Sometimes not even a pop:

Biggest bang I've had was from an Apple //e PSU..

But yes - SOP: Change the X2's...


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