Looking for any advice on where to start.
Problems when got it according to previous owner: DSP switch doesn't work (said light burnt out?), and pops and cracks when turned on.
Plugged power cord in, hit the switch with nothing plugged in, and yup, it pops and cracks, and the tuner led set flashes on and off as it pops and cracks. After a minute or so, the sounds go away and the amp seemed OK. Plugged in guitar, and worked ok. Without foot switch, the DSP worked great, all the channels worked, and seemed to be fine. Shut down, restarted, while still hot, and no issue. Plugged in the foot switch, and the buttons 1 and 2 switch between the channels as they should. But button 3 was not lighting up, nor was the DSP in the DSP 2 channel. (So not sure if it's amp or switch, yet.) Let amp cool down, and the popping and cracking goes on, with no guitar sound, for about 30 seconds give or take a few at every cold startup.
I pulled the electronics out, and pulled the main board. Looked at all the solder joints and all the components. Two joints on one Cap looked a little iffy, so I soldered it to make sure it was good. Basically it all looked good as new.
What do you guys think is causing the startup issue and the DSP issue?
thanks,
Joe
Problems when got it according to previous owner: DSP switch doesn't work (said light burnt out?), and pops and cracks when turned on.
Plugged power cord in, hit the switch with nothing plugged in, and yup, it pops and cracks, and the tuner led set flashes on and off as it pops and cracks. After a minute or so, the sounds go away and the amp seemed OK. Plugged in guitar, and worked ok. Without foot switch, the DSP worked great, all the channels worked, and seemed to be fine. Shut down, restarted, while still hot, and no issue. Plugged in the foot switch, and the buttons 1 and 2 switch between the channels as they should. But button 3 was not lighting up, nor was the DSP in the DSP 2 channel. (So not sure if it's amp or switch, yet.) Let amp cool down, and the popping and cracking goes on, with no guitar sound, for about 30 seconds give or take a few at every cold startup.
I pulled the electronics out, and pulled the main board. Looked at all the solder joints and all the components. Two joints on one Cap looked a little iffy, so I soldered it to make sure it was good. Basically it all looked good as new.
What do you guys think is causing the startup issue and the DSP issue?
thanks,
Joe