Solid State Guitar Amp Forum | DIY Guitar Amplifiers
Solid State Amplifiers => The Newcomer's Forum => Topic started by: EDWARDEFFECT1 on August 12, 2010, 02:00:59 AM
does anyone know where i can get a copy of a schematic for this amp.i am getting about 86 volts on the power plug connections?120 volts at the plug.not getting any voltage on the ic v+....thanks...ed!!
found the power plug wired wrong! i now have voltage going to the ics.replaced the output chip ,but haven't tested the amp yet...still wish i could find a schematic.anyone have any ideas?...thanks..ed
You'll need to contact Johnson Amplification to get the schematic.
http://www.johnson-amp.com/support.htm
thanks cool!!............ed!!!
got the schematic for this amp.i have analog signal coming into the cs4221-ks chip ,but no analog coming out. i just got a replacement chip for it .i will let you know how it plays out....ed!!!!
Quote from: EDWARDEFFECT1 on October 30, 2010, 10:00:38 PM
got the schematic for this amp.i have analog signal coming into the cs4221-ks chip ,but no analog coming out. i just got a replacement chip for it .i will let you know how it plays out....ed!!!!
Excellent! Thanks for keeping us posted, Ed.