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You can test the transistors with only the base (bottom) lead lifted from the board. From the base to the collector and to either emitter tab, should test like a pair a diodes. Froward conduction in one direction with a voltage drop of about .6 and open with the leads reversed. YouTube has several videos that can help if confusion exists. You don't need a transistor checker to perform this test either. Any analog ohm meter or a digital one with a diode test scale, will work here.

[QUOTE="Shockwave, post: 762846, member: 10882"] You can test the transistors with only the base (bottom) lead lifted from the board. From the base to the collector and to either emitter tab, should test like a pair a diodes. Froward conduction in one direction with a voltage drop of about .6 and open with the leads reversed. YouTube has several videos that can help if confusion exists. You don't need a transistor checker to perform this test either. Any analog ohm meter or a digital one with a diode test scale, will work here. [/QUOTE]

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