PSP 2001 TA-085v1 sound Fuse broken..

[God601]

When I tried to do a speaker mod (using a 60W speakers)
 I got a little accident after a month using it. The + and - touched and then no more sound is coming from the external speakers.
 I would like to know what I must do to repair the sound fuse , I don't have any schema to repair it.

The only thing I can hear from the original speakers of the psp is a little noising that I can almost not hear.

I'm using a PSP 2001 TA-085v1.

Thanks.