I recently acquired a Famicom and took a few pictures of the controller insides while cleaning them.
Controller I
Controller II
The chip on the left did not photograph well, but says: Toshiba TC4069UBP / JAPAN 8546HB
Something really weird about my Controller II, is it doesn't seem to have a microphone in it at all! There is a cavity behind the mic hole where it looks like one belongs, and there are two holes in the PCB with solder over them where it looks like a mic might attach. Has anyone else ever seen this? Does anyone know of a good replacement part I could stick in there? (Also, there is a suspicious looking solder bridge on the IC, you can see on the top right of the board under the numeral 2. Wondering if I should clean that up... Edit: no, it's fine. That's bridging 5V supply to the SELECT and START pins. Exactly what it needs.)
Last edited by rainwarrior on Thu Nov 23, 2017 4:56 pm, edited 3 times in total.
I might be able to explain the missing mic. Over time some of the analog parts of it would break...causing a buzzing in the audio line coming from the mic circuit...a quick fix is to take out the mic so you don't get the annoying mic noise mixed in.
Hmm, that's possible. Though if that was done, they didn't snip any wires; they must have melted the solder. I was kinda guessing they just left it out at the factory by mistake.