SDP-3 Snarling Dogs out of order

[Monokorobo]

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Dear All.....
I glad to hear if these form can solve my problem.....I've bought at " junk yard " a Fuzz Buzz Snarling Dogs SDP-3 an old style I think........but.....it's wont work well...nothing happen when I try to switch,the Led is lid ?! when i open the case.....weakk...
the IC is blocked whit white paint..he...he....
IS there anyone can give the solve ? ic number or the complete schematics ?!

Thanks...
Sorry for my english


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