Bottlehead Forum

Bottlehead Kits => Kaiju Stereo 300B amp => Topic started by: joepiecuch on March 22, 2021, 04:17:12 PM

Title: fuse blowing
Post by: joepiecuch on March 22, 2021, 04:17:12 PM
a kaiju, in daily use uneventfully for well over a year, suddenly blew the fuse at startup this evening; it did it again without the 300bs in place. before i yard it in to the workroom, i wonder if anyone has some idea what is the most likely culprit in play here?
Title: Re: fuse blowing
Post by: Paul Birkeland on March 22, 2021, 05:04:46 PM
Debris is a strong possibility. 
Title: Re: fuse blowing
Post by: joepiecuch on March 22, 2021, 05:57:17 PM
dust accumulation can't cause a short, or can it? hard to imagine what else could get into the vents...it's on a rack with a shelf above it.
Title: Re: fuse blowing
Post by: Paul Birkeland on March 22, 2021, 07:34:41 PM
Sometimes old clipped off leads can be hard to spot and can move around unexpectedly well after completing a project. 
Title: Re: fuse blowing
Post by: joepiecuch on March 23, 2021, 04:10:51 AM
it must have been something of that sort. i could see nothing obvious, so stood it on its side and gave it a few vigorous knocks, then blew a bunch of compressed air across everything, paying particular attention to both sides of the circuit boards. it works fine now, which is of course pleasing, but a little frustrating...saw nothing fall out, so is the offending whatever-it-was thing still lurking and biding time, waiting for another opportunity? in any case, thank you very much, as always.
Title: Re: fuse blowing
Post by: Paul Birkeland on March 23, 2021, 05:20:55 AM
Sometimes the debris self immolates when it causes the short.