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Unfortunately, this epoxy turned out to absorb moisture over time,  
Unfortunately, this epoxy turned out to absorb moisture over time,  
particularly when used in humid climates.
particularly when used in humid climates.
The moisture causes increases losses in the transformer.  
The moisture causes increased losses in the transformer.  
Excessive losses requires the regulator to drive the [[6AU5]] input oscillator tube (V800) harder.   
Excessive losses requires the regulator to drive the [[6AU5]] input oscillator tube (V800) harder.   
Eventually, the drive circuit can not supply enough power to keep the supply in regulation.
Eventually, the drive circuit can not supply enough power to keep the supply in regulation.
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