Tube Amps / Music Electronics
For current discussions, please visit Music Electronics Forum. New: view Recent Searches.
New: visit Schematic Hell!
The sunn still shines online!

Listen to great tunes streaming live right now!

ampage archive

Vintage threads from the first ten years

Search for:  Mode:  
previous: Carlo This is in reference to a solid sta... -- 9/12/1998 9:11 AM View Thread

Re: Hum Problem

9/14/1998 6:57 PM
Re: Hum Problem
Am too lazy to pull the schematic for the G-40C right now but I do warranty work for Saint Louis Music. Most problems that I see with these smaller models relate to poor solder joints, especially where the potentiometers and other front panel controls meet the circuit board. I you know what your doing you could pull the circuit board and remelt all the front control solder joints and those connecting power supply components (filter capacitors especially) and the speaker connections. Don't remember perxactly but many of the smaller crates use plastic standoffs that require compression by using needle nose pliers before you can remove the circuit board. It isn't too awful hard if you've done some electronics repair before but it does require a steady hand and skill.