Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: ctravis595 on July 03, 2014, 03:27:47 pm

Title: noise issue with engl fireball 60
Post by: ctravis595 on July 03, 2014, 03:27:47 pm

client reports lots of noise on first start up, with volume off you can hear some crackling and popping but while playing, this amp kills!


upon inspection i see this amp has had some mods done  :BangHead:


im getting ready to study the schematics to see exactly what is going on with these mods but does this raise an immediate red flag to anyone?

(https://fbcdn-sphotos-h-a.akamaihd.net/hphotos-ak-xpf1/v/t34.0-12/10425371_10203151762247237_5968556661176972214_n.jpg?oh=7fa72dc4319ea117442d44b44631c84d&oe=53B74F64&__gda__=1404519691_7643ba2668f46bb72ce1060edb0df729)

Title: Re: noise issue with engl fireball 60
Post by: HotBluePlates on July 04, 2014, 05:04:38 pm

I think your first candidate issue is shown in that picture.

Title: Re: noise issue with engl fireball 60
Post by: ctravis595 on July 08, 2014, 12:34:47 am

did a bunch of cleaning on the board and also tidy'd up a few weak solder points i noticed. these boards are a pain to work with but if anyone else is having similar issues just give the board a good visual inspection/cleaning