Metropoulos Forum

Hi all...this is my first post here. I should note that I am not a builder, which will be apparent when I state my problem. I've had my 100w MV for about 4 months. Just tonight, during band practice, I blew the 1 amp HT fuse. Back when I first got it I blew the mains. I replaced that with a fast acting and all was well. However, now I'm blowing the other one. Any suggestions with what's wrong? Atleast how to trouble shoot it? Any help would be great. Don't want this happening on stage!! Other than that, this is without question the most amazing amplifier I've ever owned or played. Keep up the good work, George!

Both fuses should be slow-blow. Fast-acting fuses can sometimes blow even if nothing is wrong with the amp/tubes.

Also just to add, the first thing to check if blowing the HT fuse would be output tubes. May or may not be the prob but it's the first thing to look at.

Your 1 amp fuse should be slow blow. and the next fast blow.