| View single post by Tom Bradley | |||||||||||||
| Posted: 03-18-2020 04:31 am |
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Tom Bradley
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I don't know of anything that explains the internal circuitry much. You might try googling "Smiths RVI tachometer" and see what you can find. On this particular model you might also check the 39 ohm carbon composition resistor on the board. These are notorious for going bad when they age. Also carefully examine the small coil wires for breakage or bad solder joints. Otherwise, I don't see anything that should go bad readily. Since you are good at soldering, you might consider ordering an RVI to RVC coverter board from Spiyda. This is what I used and am happy with the results. https://www.spiyda.com/smiths-rvi-rvc-conversion-board.html
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