Premier Model 120 Forever Blowing Fuses

Z

zozoe

New member
Good day all~ I'm writing on behalf of a dear buddy & phenomenal, award winning pro guitarist who has this olde as the hills(early 60's) Premier model 120 amp that is forever blowing fuses, most of the time upon turn-on. I hooked him up with a literal old geezer (but 2 yrs younger than me & the sweetest guy) who can fix & rebuild anything from an old Crosley radio to a large LCD, & modern day 400 wpc Phase Linear ss amp, circuit board, HW, & even fixed my ultra high-end SACD everything player that needed a $20 laser replaced. To date, he's built me almost 10 tweed killers made from old 40 & 50's mono power/P.A. amps,
w/or w/o schematics, & then custom tailor & tweak each project to my tastes,,, He's worked on that rather basic Premier 3 or 4 times, doesn't blow fuses on his bench, but my buddy gets it home, plays for a minute, sometimes an hour, & the amp invariably pops a fuse... No smoke or flames, just proper value fuses... Me & my genius tech are vexed, while my bud is super frustrated, & at his wits end!! Since I'm the blogger, I thought I'd reach out to all you folks who mostly know more 'All Things Amp' than I ever could handle. So, Premier 120, great sound, pretty as hell, but has it out for fuses. I know enough to almost be dangerous under the hood, & I could easily follow along with any suggestions or fixes. Sorry for the ramblin' post, but I wanted to give some background.
Thanks in advance, & stay well everyone!!
 
Probably bad current at your friend's place. With no stable power, older amps may be more prone to malfunction.

By I'm a zero in this matters, someone more insightful will chime in sooner or later.
 
My Traynor does this. I can’t remember the explanation my tech told me, but it had to do with particular components being old and going bad; like either all caps (and resistors?) needed to be replaced, and/or the transformer and/or choke needed to be rewound; something like that.
 
Something is drawing too much current. The tubes could be bad, something in the power supply could be bad, or something is getting too hot and its operational value is shifting enough to cause something else to work out of range. I would test the trannies just to be sure they are good, but if it makes good sound when it works, my bet is that something that is part of the power supply is going south. The tubes can also cause excessive current draw if there are shorts or bad heaters.
 
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