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FERNSEH · 7th Oct 2017, 12:29 pm

HKS wrote:
"You could try passing a small current via a variable power supply through the overwind for a couple of days. Adjust the voltage so that the overwind is just warm after 30 mins." John.

Do as John suggests and I reckon you could save the line output transformer.
Start of with about 20 volts, measure the current through the overwind, 20mA should be sufficient to warm up the transformer windings.

DFWB.

7th Oct 2017, 12:29 pm	#6
FERNSEH Dekatron Join Date: Mar 2005 Location: Gateshead, Tyne and Wear, UK. Posts: 7,444	Re: KB VC1 width problem HKS wrote: "You could try passing a small current via a variable power supply through the overwind for a couple of days. Adjust the voltage so that the overwind is just warm after 30 mins." John. Do as John suggests and I reckon you could save the line output transformer. Start of with about 20 volts, measure the current through the overwind, 20mA should be sufficient to warm up the transformer windings. DFWB.