(made a new thread because I stupidly put my original price in the title which couldn't be edited)
I traded for this here a while back as I'd always been fond of them and wanted a sheer-grunt kinda head in my arsenal again. Unfortunately it arrived with what seems like a power supply circuit board related hum that drives me crazy! I ended up stupidly agreeing to keep it and try to fix it rather than deal with swapping amps back again- a lapse of judgement on my part at the time, but live and learn...
I replaced all of the power amp filter capacitors, but that unfortunately didn't do the trick- I had planned to continue to troubleshoot it, but then life got busy. Now I'm moving out of town and really need all the space (and extra cash) I can get!
It still makes sound and works as it should aside from the low frequency hum (or did last I messed with it- I haven't fiddled with it for many months now). I think I may have blown a resistor on the power supply board while searching for loose solder joints on one of the transistors, and it was getting an intermittant static sound on top of the bass signal after the resistor popped. My next step was going to be replacing the smaller preamp power supply filter capacitors (the smaller 4 large capacitors in the second picture) as well as the two transistors on the power supply board and of course the resistor I popped. You can see the burnt looking resistor in the second picture below, and the transistor above it that I suspect may be funky as well (which would put the power supply filtering out of balance and potentially cause the hum I think?). My knowledge of amplifier electronics is admittedly lacking, so hopefully there is someone out there who loves these amps as much as I do that'd like a fun project and is both more experienced and less prone to the curse of short attention span than I am!
This amp is an older model 800RB, and has been well loved. It is cosmetically pretty scuffed up, but still kicks hard and I am confident that it could be someone's workhorse again with a little work.
I am asking $90 + shipping, but very open to offers on this project especially for someone who will see it through- I am going to have lost significant money on it no matter what, but I'd really like to move it before I leave town. Also interested in trades for a nice pedal tuner (Turbo Tuner being at the top of my list), a delay with tap tempo, a nice medium-sized pedalboard with case (PTII size), or a decent pair of studio headphones, or a ShuttleMax bag. Might be interested in other small useful pedals/ accessories as well...
