This 1958 Muntz is a four tube super-heterodyne AM radio. “Muntz” is short for Earl William “Madman” Muntz (pictured below) who made millions selling cheap cars, radios and televisions between 1934 and 1985.
When testing the tubes, I noticed someone had subbed in a 50EH5 output tube instead of using the 50C5 as listed on the schematic. When I tried testing the 50EH5, the glass on the bottom of the tube shattered. Luckily, I had a spare 50C5 on hand from my last repair and installed to bring her back within spec of the schematics.
After the two capacitors, one resistor and the new tube were installed, she came to life quickly.
Photos of the dirty insides are posted below along with a couple of videos showing her playing the only AM station I pick up well at my home, WSM 650 AM.
Aaron Hartley 
One thought on “Muntz R-10 Radio Restoration”