F1X fuzz

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Author Message dakine New Username: dakine Post Number: 1 Registered: 11-2008 Posted on Sunday, November 09, 2008 - 3:40 pm:    Hello All, I've owned my F1X for about ten years. Lately it has been producing a soft, but very noticeable, fuzzy distortion to the signal. (The fuzz is not constant - the signal is being distorted). The tone controls affect the fuzz, so it is probably being added before the EQ circuit. The distortion is present on all outputs (full range, high pass, etc). It is probably occuring somewhere early in the signal path. I've changed guitar cords, instruments, etc. etc. Makes no difference. Any suggestions? I have some basic tools and a multimeter. Thanks! -David keith_h Senior Member Username: keith_h Post Number: 1167 Registered: 2-2005 Posted on Monday, November 10, 2008 - 3:36 am:    Have you tried replacing the tube yet? Here is a link to the procedure. Keith mica Moderator Username: mica Post Number: 5687 Registered: 6-2000 Posted on Monday, November 10, 2008 - 8:14 am:    First, try adding a patch cord between the effects send and return. If the distortion goes away, then perform one of the cleaning procedures described here. Sounds crazy, but it cures nearly all F-1X distortion issues. dakine New Username: dakine Post Number: 2 Registered: 11-2008 Posted on Monday, November 10, 2008 - 11:15 am:    Thanks Mica, I read about the return jack issue right after posting. I tried the patch cord in the effects loop and it fixed the problem. Sounds crazy is right!