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sustainman

Spider 3 no sound but powers on

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after setting in storage for a while, maybe a yea,r amp powers on but has no sound, any advise on where to start troubleshooting?

 

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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.

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