Well, I decided to take the risk and try to dissect the thing and I've had good success.

I've just carefully "chiseled" away the coating. When I get to the component level, it seems surprisingly easy to get the last of it off without damaging anything. I've done over half of it, and I can easily see the circuit. I've already found two transistors (you can see one on the left - I removed the other before taking the pic). They are connected straight to the two input pins (1 & 2). The transistors are labeled:
D786
Q F
I found several places in China to get these, and mouser.com has the STMicroelectronics BC337-40 which they claim is an xref part.
I've also uncovered an 8 pin IC with no markings. But according to Jim Williams, this is a 5532. This would make sense as this console is full of 5532s and 5534s.
More to come...