Hello all,
I have been using the basic crack for about 2 weeks, it has been working well. I attempted to upgrade to the speedball today. I installed the small board, did voltage checks, and everything is well. When I installed the large board the channel's LEDs closer to the transformer were not lighting. I am getting voltage between the LEDs and the 47k resistor and it fluctuates around 5V, but the LEDs do not light. I am starting to think its a bad LED. Here are my other voltages.
small board:
0A - 76V
1A - 204V
B-A/B - 0V
1B - 204V
0B - 73V
big board:
0A - 119V
0B - 173V,137V
B+ - 204V
G - 0V
Images: imgur.com/a/9At8auI