Quote:
Originally Posted by raditechman
When 625 lines was starting and TV sets had uhf tuners in addition to the VHF tuner people who had television sets often did not watch BBC2 or it was not available in their area. They continued to watch BBC 1 and ITV on VHF 405 lines,
When they did switch to 625 they often got no signal as the PC88 and PC86 valves in the uhf tuner had failed due having been running whenever the set was in use with their heaters on but with no HT. A nice quick service call.
John
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Some of us unscrewed the screening cans and applied a tap-tap-tap with the butt-end of a 4BA nut-spinner. Restored the emission (long enough to beat a retreat, anyway).