Frispel
sedan 2001
TIP102 transistors: Make sure the game is off. Put the DMM (digital multi meter) on ohms (buzz tone). Put one lead on the ground strap in the backbox. Touch the other lead to the metal tab on the TIP102 transistors. If getting zero ohms (buzz), the transistor is bad! (shorted on) I replace any bad TIP102 transistor(s) immediately before I turn the game on. I also usually replace the associated pre-driver transistor too (see the testing transistors and coils section for more details on this).