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50 watt amplifer problems

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R1agan

New Member
Hi There, i have been building some amplifer kits and i had them all going but i decided to change my power supply around. when i reconnected them to the power supply and turned it on all the fuses blew, so i looked over my power upply and seen i had the +35v and 0v mixed up so i replaced the fuses looked over the circuits and turned it on again two of them did not work and one blew smoke from the resistor with copper around it. all the components looked fine and did not look physicly blown. does anyone know what may be wrong?

here is the amplifer kit.

50 Watt Amplifier Module Kit - Jaycar Electronics
 
Last edited:

crutschow

Well-Known Member
Most Helpful Member
The semiconductor is always faster than the fuse.
 

audioguru

Well-Known Member
Most Helpful Member
The electrolytic capacitors might have been destroyed by the power being connected backwards.

Don't you power it with +35V, -35V and 0V?
 
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