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Old 10-30-2019, 12:35 PM
vortalexfan vortalexfan is offline
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Join Date: Sep 2018
Location: Northern Indiana
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OK so this is weird but going across pins 3 and 6 on the 6T8 tube on the TV there is a 30 Ohm dogbone resistor that doesn't show up anywhere on the sams and it measures open which might be part of the reason why this TV has no audio as the 6T8 in this TV functions as the Phase Inverter for the 6V6 tube as well as the Audio Frequency Amplifier and the Ratio Detector Tube, and that dog bone resistor looks factory (which I know sometimes there were little changes made to these old electronics at the factory that weren't always put into the sams because they were done after the Sams were made.)

The other resistors on the 6T8 Tube which goes across pins 2 and 6 (which are the plates of the tube) measure nearly spot on.

so that open 30 Ohm dog bone resistor might be part of the reason why I have no audio.

As for the voltage and resistance readings on the tube sockets, the resistance readings on the 5U4 tube are are a little high, pins 2 and 8 which should measure around 22k ohms measures around 32k ohms and then pins 4 and 6 should measure around 68 Ohms but instead measure around 72 ohms.

That measurement was taken without the tube in the socket and the set powered off.
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