Electrical technicians have a big resposibity to be carefully solve electrical fault. Because electrical technical 's one mistake can lead to loss of property and life. I understand above problem how technical without knowing problem changes the fuse.
In aFender amp there are a few things that will make a fuse pop. A leaky filter cap will certainly cause a problem, as will a leaky cap across the cathode bias resistor. But the very nastiest ones are tose capacitors coupling to the output tube grids, because a leak there will also cause the tube life to be shorter by a large amount and possibly burn the output transformer, an item expensive to replace, if it can be found at any price. That is why I recommended replacing them with 600 volt units, or even 1000 volt caps. And the low leakage ones were the best choice.
Being a huge Fender fan, I gotta ask, why in the world was the fuse blowing? The only one I ever took out was when my drummer knocked a Coke bottle off my amp and something akin to a Mentos fountain showered my 6L6s. The Coke shorted the plate to the filament, wiping out a 6L6, opening the hum balance control and burning the fuse. Fortunately there was a spare amp because it was the opening tune.
I had a plasma TV that would frequently open its ill-sized, mini fuse. I was sure it was simply getting too hot in the fuse holder, so I replaced the fuse with a breaker that was carefully selected to have the same current and trip time specs.
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