Recently bought a "100 % working" Dirty Harry that the magnet was not working properly on. It would work occasionally out of the shooter lane but never after rolling over the switch in the left return lane.
In switch test the optos worked but in magnet test the magnet did not work. I decided to replace the optos since I wanted to remove the ramps to work on them. Soldered new optos on and they dont work at all. The transmitter reads 1.2 v at the board. The wires for the receiver read 13v but when I solder them to the board I read 8 v at the board. I'm confused and not sure what to look at next. This is the first transmitter I put on since the one that came on it and the second receiver I tried since the one that came on it. I haven't tried soldering the old boards back on. Thanks

I thought the magnet not operating properly might be due to the optos not working correctly. I bought new optos from Marco and had to solder the wires to them. I'm not sure which ones you're referring to when you say " they don't need to be soldered".

I just resoldered the original receiver back in and now it is registering in switch test but I'm not sure if it is correct. In single switch test right loop 42 it says (a)closed, when I break the beam it says open. The gun chamber 44 reads closed and when I break the beam it reads (a) open. Is 42 registering backwards? I'm not sure what the (a) means.