That's time consuming and intricate. The wires sometime get cut or entangled! I have been doing this gauge and length matching for IFTs of radios. But these AC transformer wires might touch over 2000 to 2500 turns!

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Very time consuming these transformer repairs no doubt Parasuraman. Still very unique and a unbelievable quick service! And maybe it is easier if they just remove the old wire and measure its wire length instead of counting the number of turns. Then the same coil can be rewound by using the exact same wire thickness and wire length without knowing the numbercounts I guess?

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They have a small coil winding machine. First they dismantle the transformer. Remove the outer metal cover, disengage the cores one by one and take out the coil. Then they remove the wire, during the process of which, number of turns are counted either in the machine itself or manually. Then gauge is checked correctly. Since in almost all cases, only the primary is open, they leave the secondary in the coil itself. Then the primary is rewound on the machine matching the number of counts. In many cases, if we tell them the AC output and Ampere required, they will make a new one and give, matching exactly or rewinding on using the old cores. The cost is also very cheap! (Many times we just have to wait and they will do it in front of us!) After that the transformer is dipped in varnish and dried in sun-light.

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Kindly visit this link to see a similar plug. The one with the set was total black and we may have to observe closely to see the lid of the fuse. https://www.bing.com/images/search?view=detailV2&ccid=JNIdqfq5&id=F454E8F1478E0A02B7E21FFE7B04BD2E20BB4874&thid=OIP.JNIdqfq5UAsm1TLlKpS9igHaHa&mediaurl=http%3a%2f%2fwww.kenable.co.uk%2fimages%2ffig_8_plug_uk_3_pin.jpg&exph=1000&expw=1000&q=Three+Pin+Plug+UK&simid=607999103105765043&selectedIndex=15&ajaxhist=0

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Buy some basic books from Jestine Yong. Kindly go through his library.

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Good Audio Repair Job.
and Very user friendly Mini-SET,

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