ADCOM GFA-555 II Audio Amplifier Repair And Test

In this video Erik goes through the troubleshooting and testing needed to repair this ADCOM GFA-555 II audio amplifier that has a DC offset voltage and bias problem. A look at the schematic and component replacements are discussed. How to measure and set the bias and discussion on using an oscilloscope to verify the amps performance are shown too.
#audioamplifier #electronicsrepair #adcom