EH Scott Radio Enthusiasts

The Fine Things are Always Hand Made

Scott Philharmonic 30 tubes 1938 tunning indicator problem.

Hi folks.

My name is Juliano and I am from Brazil.

I have a Scott Philharmonic 30 tubes 1938. I am fixing it, and it is almost all done. The radio is working, but the tunning indicator is still not working (6E5). I verified the signal from valve 6H6 to pin 3 in tunning indicator (6E5), and it is OK. but the indicator is always fully illuminated, and it doesn`t change, doesn`t matter the intensity of the signal.

Does someone have the schematics for this radio? Or does someone know something about this problem?

Views: 139

Comment by Bill Liers on January 5, 2015 at 8:09pm

Welcome Juliano.

Make sure that you replace the resistor in the eye tube socket. They drift high and the result is an unresponsive display. Of course, you should be sure that you are not looking at the expander eye which will not change with RF level.

regards

Comment by Juliano Correa Fantinatti on January 6, 2015 at 11:29am

Hi Bill,

You are absolutely right, the resistor is there and it is open. But I don`t know its the value (ohms).

Do you know which value it is? This resistor is brow and have a green dot in the center (photo attached).

Now I need to replace it to have my scott philharmonic working perfectly.

Thank you very much for your help.

Comment by Bill Liers on January 6, 2015 at 8:44pm

Juliano,

This resistor uses the old version of the color code. The color vs number is the same but location is different here. The body color is the first number, the end dot is the second and the middle dot is the multiplier. So you have a 1 meg ohm resistor which is typical for those contained in the eye tube socket.

good luck.

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