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Power Transistor (Excel & Scoupe)

  1. Disconnect connector from power transistor. Apply 3.0 volts between power transistor terminals No. 2 (negative) and 3 (positive). See Figure .
  2. Check continuity between terminals No. 1 and 2. With voltage applied to terminal No. 3, continuity should exist. With voltage removed from terminal No. 3, continuity should not exist. If continuity is not as specified, power transistor is defective.
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