check for shorts first. if there are none take a peace of small braid (i used some from very small coax) and solder it to the copper plate to the brass spring on the back of the cap. make sure it will not bind when the rotor moves. my email address is firstname.lastname@example.org. 73 Bob
Check the variable capacitor in the VFO. i have problems with the rotor making interment contact with the case as it rotates. i fixed it by soldering a peace of flexible wire from rotor to the case with a loop around the shaft.
I have an older TR-3 SN 796. My problem is the S meter will not go above S5. I have found 3 bad resistors in the IF. All the manuals i have do not match this radio. Does anybody have a manual for this older radio or any idea what is the problem Thanks. Bob WD8AJY
Check the voltage on pin 8 of V11A it should be about +5.5 volts if it is low the tube will conduct more incressing the current through the relay. when you key the transmitter the relay will pullin when you unkey it there will still be enough current on the relay to keep it energized. If R140s resistance is to high this will cause the problem.
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