Blowing Fuses. Dennis Had Inspire 300B SET


I was disappointed this evening, as I was listening and all of a sudden I blew a fuse, and I don’t have a manual. I don’t know if the fuse is a fast blowing fuse, or a slow blowing fuse. The one in there is a two amp, and the fuse itself is a zigzag not a straight fuse I replaced it. And it blew again and I saw the rectifier tube had a reaction when I turned it back on. Does anyone have any experience and can anyone give me some advice thank you. 

128x128moose89

@atmasphere I'm headed to the shop or a while.   Hope I didn't say anything you thought was offensive and thanks for the discussion.

Jerry

I’ll just say that your thought that the fuse is always properly sized to prevent a "poorly engineered power transformer" from blowing is an example of what I meant by overly optomistic. You think they screwed up the power transformer but properly sized the fuse?

@carlsbad2 No, this isn’t what I think nor did I suggest that.

What I did say is that somehow this and other amps like it seem to work with a 2A fuse. That suggests that since this one did at one time, it should be able to do it again. But I don’t know what its like (although the photo looks OK) and since I don’t want to be on hook for a part that might be underrated or the like, I won’t put in a fuse that is beyond the suggested rating. That isn’t the same thing as saying there are parts that are underrated or poorly engineered.

You’re right that we’re conservative about our fuse ratings. They have served us well in the last 45 years. When a fuse blows in our stuff there’s always a good reason.

Even on billion $ hardware a adequate FEMA… sometimes isn’t….

Where i always ran into trouble was when really smart people had to much ego to admit they didn’t know everything….

I saw that enough, i made sure i had some non advocate reviews….and a personal coach to whack me when i needed it….

But let’s not kid ourselves, this particular amp ( 99.9% ) are built to a price point…

  I am happy to report that Dennis Had got back to me and told me after asking what type of rectifier tubes I had, to buy from Tube Depot, and to purchase a JAN Phillips Military rectifier…. also that I needed a slow blow 2 amp fuse, and if this does not work that he would take a look at it for me.

I want to say that you are all very helpful and I want to thank you for all chiming in on this one! Merry Christmas

Keep us updated, @moose89  , and let us know how it all works out.

By all accounts that I am familiar with, Dennis is a good dude and backs his products.