Quote:
Originally Posted by old_coot88
The failure rate of those output transistors was on a par with OZ4s and vibrators in the older all-tube radios. There was always a fractional-ohm resistor/fuse in the emitter leg of the transistor. It popped whenever the transistor shorted. We had to keep a running stock of those (something like .27, .33, .47 ohm IIRC). Don't recall ever having to replace one of the space-charge tubes, though.
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I found open heaters in the space charge tubes. That's all that ever went wrong with the Motorola built sets.
When a Bendix built radio went bad in a 57-59 Ford, I would go to the auto salvage yard and buy a Motorola built radio. The customer was happier and better off for it.
