{"product_id":"rsm-vol-06-how-to-test-and-replace-resistors-and-volume-controls","title":"RSM Vol 06 - How To Test And Replace Resistors And Volume Controls","description":"\u003cp\u003e\u003cmeta charset=\"UTF-8\"\u003e\u003cmeta charset=\"UTF-8\"\u003e\u003cspan\u003eThis 1947 training manual from the \u003c\/span\u003e\u003cstrong\u003eNational Radio Institute\u003c\/strong\u003e\u003cspan\u003e serves as a technical guide for diagnosing and repairing \u003c\/span\u003e\u003cstrong\u003eresistors\u003c\/strong\u003e\u003cspan\u003e and \u003c\/span\u003e\u003cstrong\u003evolume controls\u003c\/strong\u003e\u003cspan\u003e in vintage radios. The text categorizes various hardware types—such as \u003c\/span\u003e\u003cstrong\u003ecarbon, wire-wound, and variable resistors\u003c\/strong\u003e\u003cspan\u003e—while detailing common malfunctions like \u003c\/span\u003e\u003cstrong\u003eopen circuits\u003c\/strong\u003e\u003cspan\u003e and \u003c\/span\u003e\u003cstrong\u003enoisy terminals\u003c\/strong\u003e\u003cspan\u003e. Practical instructions emphasize the importance of using \u003c\/span\u003e\u003cstrong\u003emultimeters\u003c\/strong\u003e\u003cspan\u003e to verify resistance values and warn technicians about the risks of \u003c\/span\u003e\u003cstrong\u003eshunt paths\u003c\/strong\u003e\u003cspan\u003e during testing. Furthermore, the source explains the \u003c\/span\u003e\u003cstrong\u003eR.M.A. color code\u003c\/strong\u003e\u003cspan\u003e system and provides criteria for selecting suitable \u003c\/span\u003e\u003cstrong\u003ereplacement parts\u003c\/strong\u003e\u003cspan\u003e based on wattage and physical size. Detailed procedures for swapping out \u003c\/span\u003e\u003cstrong\u003epotentiometers\u003c\/strong\u003e\u003cspan\u003e and \u003c\/span\u003e\u003cstrong\u003etone controls\u003c\/strong\u003e\u003cspan\u003e are also included to ensure smooth mechanical operation. Ultimately, the booklet provides a structured approach to \u003c\/span\u003e\u003cstrong\u003eradio servicing\u003c\/strong\u003e\u003cspan\u003e by combining fundamental electronics theory with hands-on shop techniques.\u003c\/span\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Retro Radio Shop","offers":[{"title":"Default Title","offer_id":46072315019452,"sku":null,"price":19.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2932\/5866\/files\/ARRA-1_ae7ef4ae-ab9d-43f3-9c38-88d89ef18226.png?v=1773856174","url":"https:\/\/www.retroradioshop.com\/products\/rsm-vol-06-how-to-test-and-replace-resistors-and-volume-controls","provider":"Retro Radio Shop","version":"1.0","type":"link"}