Thread: Late 1950s Zenith Deluxe Roayal 500 Radio
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Old 08-30-2015, 04:10 PM
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Quote:
Originally Posted by old_coot88 View Post
Prolly 1U4 and 1U5.
If one of 'em pops the filament, then they all go out since they're in series. Then the radio ain't active anymore.


jr
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