Dunno when they switched but my CTC-7 uses dual 5U4's in the LV power supply.
I noticed too the initial voltage can surge to over 600 volts at turn on

Don't know how the 500v caps survive that!?
Quote:
Originally posted by Charlie
This must have been a b&w set? Even the early RCA color sets used SS LV rectifiers instead of 5U4's, correct?
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