Amp repair question

[Bridgepickupman]

I've got a great old '66 Ampeg ReverbRocket II. I like it alot.
But it sometimes builds up a hum and then pops, which stops the hum. If I give it alittle kick when it hums it'll make a big crashing sound. Now this is an old tube amp so i'll admit that it could be alot of things, but I suspect the input jack is the culprit. Does this seem reasonable? Or is that an unknowable from a small internet post?

[Turbo7MN]

I don't like diagnosingproblems over the internet in general but I'd say the input jack might be a possibility. The hum is sometimes caused by a gradual lack of contact somehwere and the pop is when it suddenly makes a good connection again. I have a cable that does the same thing.

I'd really reccomend you take it to a tech and have the whole thing looked over though. For an amp of that age I always reccomend having all the power supply filter caps replaced as well as any leaking coupling caps, and it never hurts to have the whole thing looked over for problems that may not be ovbious right now.

-Darren

[Keith]

Based on the age, it could be dry caps popping. My Father-in-Laws Peavey did that, and 50% of the caps were done. When you kick the amp, the crashing you are hearing is the reverb tank springs knocking together. Please don't do that.

Turbo's got the whole thing set up for you. Take it to a tech, and don't open the amp up if you don't have a clue. You could be in for the shock of your life if you start poking at things that are not meant to be poked at. Trust me, I know.

But it does sound like the caps to me.

[ModestCargo]

My '65 Fender used to snap crackle and pop all day long, but the more I played it, it just seemed to get better, and now it doesn't make odd noises anymore at all.

I'm sure nothing's been changed in the amp since 1965, either. Even the tubes and speaker are original and you should have seen what I sucked out of it with a vacuum.