50 watt amplifer problems

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.

**broken link removed**

You've almost certain blown the IC - you must not connect it backwards.

ok thank you very much i well change them and see what happens

The semiconductor is always faster than the fuse.

crutschow said:

The semiconductor is always faster than the fuse.

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Made me think of the TV show Kung Fu.

blueroomelectronics said:

Made me think of the TV show Kung Fu.

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It is the Way of the Warrior to learn to rely on your semiconductors to prevail where your fuses cannot

i changed the ic's and now i get sound but its all distorted

The electrolytic capacitors might have been destroyed by the power being connected backwards.

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

audioguru said:

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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yeh i had the -35 in the right place ut had the 0 and +35 mixed up.