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As a labor of love, hobbyists have been known to rebuild the HV transformers.
As a labor of love, hobbyists have been known to rebuild the HV transformers.
This is discussed from time to time on the groups.io (formerly Yahoo) TekScopes forum.
This is discussed from time to time on the groups.io (formerly Yahoo) TekScopes forum.
Bernie Schroder has found that the HV transformer degeneration can be slowed considerably by keeping the HV module cool and dry. The mod he was taught by Jim Willams involves replacing the tube rectifiers with NTE517 diodes. This removes the tube filament heat and current load. Adjust grid of driver tube as required for appropriate regulation range (see photo below)


===Vertical Amplifier===
===Vertical Amplifier===
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