Hey all, I've got a fender 90 watt amp and I'm having problems with its input jack, when the patch cord moves at all in the jack I get a really high pitched squealing noise, Ive tried tightening the bolt around the jack and this hasnt helped. This problem is also NOT due to feedback. Any ideas on how I can fix this? Thanks guys.
Yeah either cable or its something liek my amp did, which needs to be opened, by yoourself (which i wouldnt advise seeing how you dont seem too amp smart no offence) or get it looked at

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