Spy Hunter II control pcb question

flex

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Donor 7 years: 2019-2025
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I think 1 of the channels is flaking out, making the second player controls cut in and out. I connected them to the player 1 side, and they worked great. I am thinging the one chip on the reflective sensor control pcb is bad. The number on the board is A080-91854-B000
The number on the chip at u1 is B8648 ADC0844CCN
The number on the chip at u2 is C74HC244 N D8436

Are these chips available, or a replacement pcb??
 
if thats an optical encoder, try cleaning the optics with a q-tip.
And, also reflow the header pins.
 
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