problem with sub bass can someone please help?

[clear white lig]

Okay well heres the issue, I have a feeling one of the connections to the input jack on my sub bass has come loose as its stopped making a connection for about a week now, and I'm sure its not my input cable or anything..

anyway, I'd be able to fix that except for I dont know how to take the knobs off in order to get inside it.. anyone know how to remove them?

 

[jongitarz]

You don't need to remove the knobs. Unscrew the screws on the control plate.

 

[5Stringer]

Okay well heres the issue, I have a feeling one of the connections to the input jack on my sub bass has come loose as its stopped making a connection for about a week now, and I'm sure its not my input cable or anything..

anyway, I'd be able to fix that except for I dont know how to take the knobs off in order to get inside it.. anyone know how to remove them?

Were you able to find the problem with your jack?