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48-1262 no sound
#1

In a previous post, I complained of low voltage. I replaced the 50 x 6, and the voltages came up just fine, though a little high. I also replaced one resistor that was open. All I hear now from the speaker is a dull hum.

I performed the oscillator test with guidance from the manual, and the voltage readings are .02 instead of the required -3.3 to 4.2 (if I did it correctly); ohms at the coil read 3.0. Voltages on the 14AF7 are good at the test points.

The trouble shooting guide Section 4 says for the osciallator test says to "connect the negative lead of the voltmeter through a 100K ohm resistor to osciallator grid, test point D."

My question is where does the 100K ohm resistor attach? As I read the instructions, it looks like I attach it to an alligator clip lead in line. Is that correct?

If this checks out ok, I will move to the audio transformer, but as Scarlett O'hara said, "tomorrow is another day."

Thanks for all your help in advance.

Terry


Messages In This Thread
48-1262 no sound - by ke5yum - 04-19-2013, 07:41 AM
RE: 48-1262 no sound - by Jim Dutridge - 04-19-2013, 07:54 AM
RE: 48-1262 no sound - by ke5yum - 04-19-2013, 09:24 AM



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