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: https://unicorn.drogon.net/bbcSmoke.jpg Biggest bang I've had was from an Apple //e PSU.. But yes - SOP: Change the X2's... Gordon
