I seem to have a re-occurring Opto issue. Opto 2 "bad" "stuck open". I just replaced both opto LED and Transistor, no change. With a DMM I read 1.4vdc on opto 1 and 3 however on opto 2 I read 13.94 vdc. I unplugged connector J-5 powered up and on pins 1 & 3 "opto 1", pins 5 & 8 "opto 2", pins 10 & 12 "opto 3" all read 13.94 vdc. What is causing the voltage drop on opto 1 & 3 but not opto 2??

Just checked wiring from Accelerator board to opto's and all 3 pairs are good.

Update, swapped opto transmitter 2 & 3, 2 worked now and 3 doesn't so it appears that a brand transmitter was bad. Testing was done in Switch Edge test. Powered up the game and started playing supercharger was extremely slow. Now opto 2 & 3 are toast...something appears to be burning up opto 2.....

Bump...

Bump...again

Problem appears to be on Accelerator board. Took out original board and put in a Homepin board back in in April, wouldn't have figured the board would have went already. Put the old board back in today and all three Opto's work great, no more burning up Opto 2. We'll see how long...