Yaqin MC-100B Right Channel Humming

[nielsole]

Hi I'm the Proud Owner of A MC-100B.
I have had this AMP for 3 years now.
And sin's I got it the Right power Transformer have been humming and gets A little Warmer than the Left.
So I took the metal Shell off.
And then I discovered the right power Transformer runs all the power to the heating of all the tubes.
I was expecting that the left power Transformer was taking Care of the left channel and the right power Transformer was taking care of the right channel.
NOW Is the question can I make A small power supply for the heating of all the tubes.

 

[jazbo8]

You can, by adding another filament transformer provided that there's enough room in the chassis.

 

[nielsole]

Cool. Good to know.
I was wondering why they only made one of the Transforms whit Filament output

 

[jazbo8]

Yes, there are many suppliers for that, just search for filament or heater transformers.

 

[vidax]

Each power transformer has a winding to feed the filaments onto the respective channel. The left channel transformer has a wiring that provides the negative voltage for the KT88 lamps, common to both channels.
For details see: "Yaqin MC-100B heater elevation"