F2B pre amp

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Author Message jackiet New Username: jackiet Post Number: 1 Registered: 4-2009 Posted on Friday, April 10, 2009 - 1:16 am:    I have a '83 built F2B that on ch1 after playing for a while cuts out then after a while comes back sometimes at lower volume and/or distorted then cuts out. Ch2 is fine I have changed the valves several times but I still have the problem. Does anyone have any suggestions? mica Moderator Username: mica Post Number: 6037 Registered: 6-2000 Posted on Friday, April 10, 2009 - 9:43 am:    Probably just need to clean the mono output jack. You'll find all the details here. If you perform this mechanical cleaning and the problem persists, the mono jack may have to be replaced. jackiet New Username: jackiet Post Number: 2 Registered: 4-2009 Posted on Saturday, April 11, 2009 - 12:39 pm:    Thanks Mica I will give it a try