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48-1262
#11

Terry,

Most of the issues have been resolved I think. First, I have been placing the - lead of the VM on Test point B. I did not mention this before not thinking that it mattered but those power checkes were done with the unit attached to a dim bulb tester. It occured to me that the power will be low with that arrangement, and it was. My power check is as follows:

Test Point A 180 (high)
Test Point C 255 (high)
Test Point D 129 (low)

Voltages on the 14AF7 are

Pin 3 120
Pin 6 126
Pin 7 7.9

I was also conducting the oscillator test incorrectly. It measures -4.2, so I am happy with that.

The audio transformer is ok. I tested it by touching a wire to it and listened for a pop. I heard one.

But I have no audio. The only thing I hear is scratching in the speaker that sounds like a nearby thunderstorm heard on the AM dial. There is a hum that gets louder as I turn the volume up.

Any thoughts? Could the unit be out of alignment that it receives no stations?

Terry


Messages In This Thread
48-1262 - by ke5yum - 10-08-2013, 01:14 PM
RE: 48-1262 - by klondike98 - 10-08-2013, 04:05 PM
RE: 48-1262 - by BrendaAnnD - 10-08-2013, 04:09 PM
RE: 48-1262 - by ke5yum - 10-09-2013, 07:42 AM
RE: 48-1262 - by ke5yum - 10-22-2013, 07:56 AM
RE: 48-1262 - by Radioroslyn - 10-22-2013, 06:05 PM
RE: 48-1262 - by Radioroslyn - 10-22-2013, 06:48 PM
RE: 48-1262 - by ke5yum - 10-23-2013, 08:05 AM
RE: 48-1262 - by ke5yum - 10-30-2013, 07:57 AM
RE: 48-1262 - by Radioroslyn - 10-30-2013, 08:15 PM
RE: 48-1262 - by ke5yum - 10-31-2013, 08:02 AM
RE: 48-1262 - by Radioroslyn - 10-31-2013, 04:53 PM
RE: 48-1262 - by ke5yum - 11-01-2013, 07:50 AM
RE: 48-1262 - by ke5yum - 12-13-2013, 09:16 AM
RE: 48-1262 - by Radioroslyn - 12-15-2013, 01:08 PM
RE: 48-1262 - by ke5yum - 12-18-2013, 09:37 AM
RE: 48-1262 - by klondike98 - 12-18-2013, 10:03 AM



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