I have had this problem in various PSUs, particularly in MicroVAXen. In my case replacing them has been fairly straightforward. Not had this with my TRS-80 (Model 1) though. I think it is a fairly common problem.
Regards Rob > -----Original Message----- > From: cctalk <cctalk-boun...@classiccmp.org> On Behalf Of Marvin Johnston > via cctalk > Sent: 28 August 2019 09:16 > To: ClassicCmp <cctalk@classiccmp.org> > Subject: TRS-80 Fireworks > > I'm just curious how many people have powered up their TRS-80 computers, > and ended up with a bang and a room filled with smoke? > > So far, I've gotten the fireworks in two out of two TRS-80s (model 3 and > 4) when they were powered up. In both cases, the problem was with the > main line filter capacitor mounted on one of the power supplies. The > computers continued to work which was my first clue the problem was not > serious :). > > Is this a normal problem with these older computers? I'm used to seeing the > electrolytics give problems, but this is the first time I've seen one of the X > type line filter caps blow.
