F100 problem...HELP

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jkornel

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Hi all, I am new here, just found this board a couple weeks ago and have been reading great threads since ! My main amp for the past 4 years has been an F100 head into a 3/4 back 212. I have been nothing but happy with this amp since I got it. Changed tubes once about 18 months ago, put mesa's in again. I playin a gigging cover band and play out lots, but the past year has been slow, not mcuh gigging.

So yesterday I moved it from one room in my house to another and plugged everything in. And when I turned on the power there was a crackling and then a pop and the amp was off, there was also a faint burning smell. I checked the fuse, it looked OK but I changed it anyway, checked that all the rubes were in tight, and changed power outlets. Then turned it on and it seemed to be OK. Possibly the clean channel is a little quieter, and not as dynamic but that might be my imagination?

S what I am wondering is what could have caused this? Could I have a burned out preamp tube? Could I have had a loose tube or something? I just don't want to end up with a bigger problem or something dyin during a gig.

THANKS in advance for your help

Jeremy
 
jkornel said:
Hi all, I am new here, just found this board a couple weeks ago and have been reading great threads since ! My main amp for the past 4 years has been an F100 head into a 3/4 back 212. I have been nothing but happy with this amp since I got it. Changed tubes once about 18 months ago, put mesa's in again. I playin a gigging cover band and play out lots, but the past year has been slow, not mcuh gigging.

So yesterday I moved it from one room in my house to another and plugged everything in. And when I turned on the power there was a crackling and then a pop and the amp was off, there was also a faint burning smell. I checked the fuse, it looked OK but I changed it anyway, checked that all the rubes were in tight, and changed power outlets. Then turned it on and it seemed to be OK. Possibly the clean channel is a little quieter, and not as dynamic but that might be my imagination?

S what I am wondering is what could have caused this? Could I have a burned out preamp tube? Could I have had a loose tube or something? I just don't want to end up with a bigger problem or something dyin during a gig.

THANKS in advance for your help

Jeremy
One of your power tubes probably arced and blew the fuse. If you practice and gig often, you might want to change the tubes once a year. :)
 

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