About a year ago I reinstalled an OEM radio from the aftermarket one that was installed. I respliced the connections and used the OEM plugs back in the rear of the radio. Ever since then I have only been able to get a faint sound from the front right speaker. All other speakers don't work. It doesn't have the premium system. It's a 91 318iS which is just the 4 speakers and HU. I'm thinking it may be the internal amp. Does anyone know a good place who can recondition the stock radios internals? Or where I can find one on the cheap? Id rather not drop more than $50 or so. I've already got $100 into this non-working head unit. On top of another $100 into a vintage alpine that broke. 
