Re: M-audio AV30 speakers recap and repair

Hello,
Were you successful in your repair? I have the same issue, (C48 & C47 -25v 220uf), (z1 & z2 - ???), (r58 & r 57 -???) (c4 & c10 - 104? with a dot onto of the 0), and (two caps (can't determine pcb #'s) - 35v 4700uf). They all look bad so i figured i would replace them all. I have yet to determine exactly what z1, z2, r57, r58, c4 and c10 are? If i replace all of these will they most likely fail again after awhile?
thanks