Framer

Check capacitor C20 on main pcb (DSP) #35-00-0308 or #50-02-0220-1 for Spider II. It is a 6.3VDC 1000MFD cap which can be in short circuit. If so also check for burned resistor R54, a 5.11 ohm surface mount 1/4watt on the underside of the same board. The 5V regulator (MC7805) may also have suffered. This happened to me.

My Spider is back to life :D. Thank you. By the way, i found actually several Spider schematics on the web, the main board (DSP) is almost the same in all of them but these power components do not appear on any. Text descriptions refer to R53 R54 but not their value. I think this problem is or will be quite common, so this thread could help many persons. However, this issue does not really match the title and some persons may miss the fix. Might be worth creating a new topic for it. Edit: Found another topic titled "Spider 3 no sound but powers on" more likely to be the symptom, and updated it with this info.

Hello, Thank you Pecorporation, i just experienced the same problem on my Spider II (main board 50-02-0220-1) 1000µF 6.3V capacitor shorted and R54 burned so i couldn't read the value on it any more. I could not find the schematic anywhere on the net so i was about to replace with a 4.7 Ohm. You gave me the right value. I already replaced the capacitor with a 16V one and will also replace the 7805 regulator, although it looks good, since believe i saw some smoke there. The defective capacitor is very small for a 1000µF 6.3V and micro capacitors are not very good over time, it is a pity because there is plenty of room in this amp!