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Old 15th May 2021, 10:27 am   #362
FERNSEH
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Join Date: Mar 2005
Location: Gateshead, Tyne and Wear, UK.
Posts: 7,444
Default Re: Baird T5 restoration project.

Tested the T5 EHT unit yesterday. There was no problem with the CRT heater because the main power unit provides the heater supply. 2.5V or 4V depending on the type of CRT in use.
The 5KV EHT is OK so it's time to move on to the restoration of the timebase unit.
As mentioned earlier there a few differences between the T5 and T23 EHT units which means no direct interchangeability without doing certain modifications.
The T5 power unit does not have the video DC restorer in the brightness control circuit and the brightness control is connected to the unit by a long three core cable.

DFWB.
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