I just diagnosed my very first fault on an arcade PCB with my Fluke. I'll immediately will admit that I could have found the issue just using my eyes too......
"Just for fun" I hooked up the Lunar Lander board that I got with the cab, remember it is converted to Asteroids with some bootleg kit. It was totally dead when I tried it in the cab....
Hooked up my 6800 to 6502 converted pod, powered up UUT. Fluke says UUT power is not OK. I check on the board with my other Fluke (the DVM

) and indeed it's only about 4,6V
Nice, so the voltage detection of the Fluke 9100A works

Cranked up my test switcher PSU to 5,1V on the board and no more complaints from the Fluke.
So first things first: Bus check. Response => pod timeout Bad UUT clock.....touch the 6 Mhz test point with the Fluke probe and it sticks high. Reset the board and it sticks low and whatever I do it sticks low.
Mmmm so we got a clock problem, let's see where that crystal is.......mmmmm....should be very near that test-point but all I see is........two holes in the board.....the crystal is missing or broke off

Guess I'll need to dig one out or order one....gonna be hard to get the exact correct frequency AFAIR.....but OK I feel both happy and a bit stupid for not noticing this right away
