cgharrison
Silver Supporting Member
- Messages
- 221
I've got an Ampeg J20 jet, and I recently decided to convert it from a brownface Deluxe type (the J20 is very close to the 6G3 circuit) to a 5G9 Tremolux. All is well, except when I try to use the tremolo footswitch. Every time I plug into the footswitch jack, I hear a loud motorboat/jackhammer sound that gets even louder when I hit the footswitch. I can't really tell if the louder sound comes with the tremolo engaged or off - the noise is too loud. I've gone over every solder, replaced the trem caps, and double checked all my wire runs. Any brilliant ideas as to where the problem might be coming from?
Here are some links to schematics/layouts:
J20
http://www.prowessamplifiers.com/schematics/images/J20_Schem_w_transformer2.pdf
http://www.ampeg.com/products/diamondblueguitar/j20/images/wiring_LG.jpg
5G9
http://www.davidsonamp.com/sf/images/tremolux5g9.gif
http://www.thevintagesound.com/ffg/schem/tremolux_5g9_layout.gif
6G3
http://www.thevintagesound.com/ffg/schem/deluxe_6g3_schem.gif
http://www.thevintagesound.com/ffg/schem/deluxe_6g3_layout.gif
Thanks!
Here are some links to schematics/layouts:
J20
http://www.prowessamplifiers.com/schematics/images/J20_Schem_w_transformer2.pdf
http://www.ampeg.com/products/diamondblueguitar/j20/images/wiring_LG.jpg
5G9
http://www.davidsonamp.com/sf/images/tremolux5g9.gif
http://www.thevintagesound.com/ffg/schem/tremolux_5g9_layout.gif
6G3
http://www.thevintagesound.com/ffg/schem/deluxe_6g3_schem.gif
http://www.thevintagesound.com/ffg/schem/deluxe_6g3_layout.gif
Thanks!