40-190 weak volume - Printable Version

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+--- Thread: 40-190 weak volume (/showthread.php?tid=7440)

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40-190 weak volume - 37silverstreak - 09-11-2013

Well, I put this set on the back burner for a week or so. after recapping and replacing all the resistors and cleaning the contacts and controls, i couldn't get her to play. Funny thing was the set did play when I went to get it, I know I heard it!!!! So i figured the tubes must be okay, right???? Wrong! I pulled the tubes and tested them and all but the 7B7 either had shorts or were weak at best Too bad as they were all Philco tubes, probably the originals as it looks like this set has never had any service. So I ordered a set of NOS tubes from Bob Dobrush. They came today and I installed them. The set is now kind of working, except that the volume is weak. I get stations all over the dial and even on the presets and they are close to where they should be on the scale. Volume and tone controls work except I have to crank the volume up to full to get any thing. i have the set hooked up to my 40-150 antenna for testing. I haven't gone to far into it yet, but the voltages I've checked so far seem to be normal. I don't think it's in the audio as I get very loud static if I work the preset buttons back and forth. I was just wondering if any one here might have any tips or ideas on which way I should start. thanks!
Kevin

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RE: 40-190 weak volume - jerryhawthorne - 09-12-2013

Kevin, perhaps time to do an alignment on the radio? Just might perk it up a bit .
Jerry

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RE: 40-190 weak volume - Arran - 09-12-2013

Check the primary on the output transformer.
Regards
Arran

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