01-08-2026, 04:57 PM
Sorry I did a typo in the title of my radio it is an H725....I can't find an exact schematic for mine. Mine has a 35C5, 19T8, 12AU6, 12BA6, 12BA6, 12AT7 and 6BJ6 the closest schematic is the CH7G01Z1 but it shows two 6BJ6.
Radio Museum shows a H725Z1 mine is Green. My chassis is stamped H725, the label on the bottom of the radio is gone.
The schematic shows a 470K resistor from switch to ground? I put a polarized cord on the chassis with neutral direct to chassis or ground, the hot side goes through the switch then to B+. Also replaced the selenium rectifier with a 4004 diode and a 75 ohm 5 watt resistor B+ is 133v schematic shows 130v. I eliminated the 470K resistor.
Radio Museum shows a H725Z1 mine is Green. My chassis is stamped H725, the label on the bottom of the radio is gone.
The schematic shows a 470K resistor from switch to ground? I put a polarized cord on the chassis with neutral direct to chassis or ground, the hot side goes through the switch then to B+. Also replaced the selenium rectifier with a 4004 diode and a 75 ohm 5 watt resistor B+ is 133v schematic shows 130v. I eliminated the 470K resistor.
Jim
Spring Lake MI
![[-]](https://philcoradio.com/phorum/images/bootbb/collapse.png "[-]")
