Quote:
Originally Posted by Phil Nelson
The Sams service manual has a complete resistance chart for the TV-37:
http://www.earlytelevision.org/pdf/p...sams_62-16.pdf
Checking the resistance at every pin of every tube is tedious, but it is done with the TV powered off and it doesn't require great diagnostic skill. If you find a big discrepancy between the ideal resistance and the measured resistance, that might point you in the right direction.
For each pin, you are basically checking whether its resistance value is more than 20% above or below the ideal value given in the chart. Look carefully at the little notes at the bottom of the chart.
Now, it's possible that you'll take all those measurements and find nothing amiss -- but that, too, is useful information. You just confirmed a bunch of things that are correct and can be crossed off the trouble list.
Phil Nelson
Phil's Old Radios
https://antiqueradio.org/index.html |
Hi Phil...thanks so much for your input! I know these questions will demonstrate my minor league status but bear with me! I have the chart. Tubes in the sockets or out when I measure? Measure resistance to ground except where indicated otherwise?