Sellersburg, IN
Quoted from boneman91:I think so. Its a small three prong thing. I think I replaced that a while ago. Should I try again? How can I test it? I've tried following the directions on the System 11 repair guide, but my DMM doesn't have a "tone" setting for Ohms, and my DMM never reads zero for ohms like the guide says for a bad transistor. I'm an electricity noob, and an totally confused by the DMMs.
You test transistors with the diode setting. Generally, the larger ones get black lead on center and red lead on the outside legs. Should read .4 to .6. Swap that to red lead on center and black lead on the outside for the predrivers (smaller transistors). Should get the same readings. Have you verified that one of the activating switches is not closed? Maybe a solder blob or a shorted switch cap? Place a piece of paper between both switches to ensure the contacts are not touching. Clip off one end of the switch cap if it still locks on.
