Low end on my amp keeps cutting out

[Lex Slade]

I have a 15w practice amp I use in my bedroom, and lately the low end has been cutting out. Here's a video showing the problem:

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If you notice, the low end kicks in if I push the tip of the cable down, but as soon as I let it up the lower frequency boom disappears. I also held the cable down with my foot to get the low end back on. I don't use this amp for recording or playing live, but it's still an annoyance (Especially today when I put new strings on and wanted to try them out).

Any ideas what it could be?

 

[BassmanPaul]

Most likely a poor solder connection on the jack or contacts that need retensioning.

 

[will33]

Agree with Paul. Check things internally around the jack, as well as in the plugs on your cable.