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I do not hope the CEM3382 is broken, for it is hard to find.
Older versions of the A-131 have the differently named but identical circuit PA382, so buy some if some pop up for sale.
On my A-126 the only chip that was in a socket was that CEM, so probably it is an older model as well.
Now that I got a working A-126 and a broken A-131 I should treat myself to some more VCAs ... maybe the A-135-4 will do as birthday present