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2 bytes removed ,  7 August 2014
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particularly when used in humid climates.
particularly when used in humid climates.
The moisture causes increased 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 require 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 cannot supply enough power to keep the supply in regulation.
The usual solution is to scavenge a replacement transformer from another scope.
The usual solution is to scavenge a replacement transformer from another scope.
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.
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