Hi,
With all this time on my hands, I'm trying to bring my ax2 from high school back to life. I have a basic understanding of electronics and I feel comfortable soldering but by no means am I an expert.
Issue : After playing my guitar through the amp for about 5-10 minutes, the sound starts to crackly and pop, dropping intermittently in volume. In general, shutting it off and starting back up seems to bring it back to a working state.
Theory: I'm guessing possibly an issue with the LM3886TF amps. Since it seems to take time, after it's been running for a bit, it could be heat related. When I opened up the amp, I could tell that the heat goop had been replaced/applied in a sloppy way. The Serial number is EI4xxxx so I think it's one of the later models that doesn't have an issue with the transformer.
Since there are two large circuit boards inside the AX2, is there a way to isolation the one with the amplifiers for testing?
Thanks in advance for any help.
-Corey