12-24-2014, 11:53 PM
Hi Guys,
Here's my latest project Zenith Model G725 . When I got it all it did was have a loud hum at any volume. I replaced all the electrolytics and wax caps. Replaced any resistor out of specs. I tested all the tubes and they check ok.
So, now, with the volume turned all the way down I get a loud hum. Once I move the control any amount, the hum goes away and the radio sounds great-AM and FM.
Any thoughts on what might be causing this?
Thanks,
Here's my latest project Zenith Model G725 . When I got it all it did was have a loud hum at any volume. I replaced all the electrolytics and wax caps. Replaced any resistor out of specs. I tested all the tubes and they check ok.
So, now, with the volume turned all the way down I get a loud hum. Once I move the control any amount, the hum goes away and the radio sounds great-AM and FM.
Any thoughts on what might be causing this?
Thanks,
Eric
Lake in the Hills, IL
Member: Philco Phorum, ARF, ARCI & Radiomuseum.org
