hey there I have a marshall solidstate practice amp. Something is wrong with the input. If I plug in, turn it on it starts to make this really loud noise. SOunds like something is not connected properly. If you jiggle the input and get it in the right spot it stops. Any ideas on how to fix this?

This is what the amp looks like.
i have that same amp. i havent had any problems w/ mine. i think some of the inside wireing came undone. it would be best to send it off to the manufacturer and having them fix it unless you have a sauderer at ur house. if you do, you could probably take it apart and resauder it. but thats just a guess, cause thats what happened to my crate and it worked. but maybe not.
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