[s-cars] bose rear amp

[too many quattros]

my rear amp is dead (popping, low volume, etc) on my urs4 (1992).  i cant
find anything online as to how to repair these units.  i found a number of
sources that will repair the unit for a hefty fee.  anyone have a source for
the DIY guy?  Please reply all, back to me directly as i currently do not
have delivery on for the S-car list.

THANK YOU!


Shayne

PARTING:  1972 Mercedes Benz 280 SE 4.5
PARTING:  1986 Audi 4000 CS quattro