06-02-2006, 12:33 PM
Hi
First of all, there is no such thing as a Model 37-350. Now if you mean 37-650, that uses a power transformer and does not have a "hot" chassis.
This model, as well as most AC-only (using a power transformer) Philcos, does have a double line bypass capacitor. The originals were contained in one of Philco's famous (infamous?) bakelite blocks, and contains two .015 uF capacitors. One end of each of the two capacitors are joined together and connected to ground. The other free ends of each of these two capacitors connects to each side of the AC line. With the set plugged in, you will probably read AC voltage between each side of the AC line and ground, IF the chassis is grounded.
These capacitors should be replaced with new capacitors with an "X-Y" safety rating. For additional safety, use a smaller value, like .01 or .0068 uF. The X-Y safety caps are stocked by various parts vendors. With a lower capacity, you will have less voltage from line to ground.
First of all, there is no such thing as a Model 37-350. Now if you mean 37-650, that uses a power transformer and does not have a "hot" chassis.
This model, as well as most AC-only (using a power transformer) Philcos, does have a double line bypass capacitor. The originals were contained in one of Philco's famous (infamous?) bakelite blocks, and contains two .015 uF capacitors. One end of each of the two capacitors are joined together and connected to ground. The other free ends of each of these two capacitors connects to each side of the AC line. With the set plugged in, you will probably read AC voltage between each side of the AC line and ground, IF the chassis is grounded.
These capacitors should be replaced with new capacitors with an "X-Y" safety rating. For additional safety, use a smaller value, like .01 or .0068 uF. The X-Y safety caps are stocked by various parts vendors. With a lower capacity, you will have less voltage from line to ground.
--
Ron Ramirez
Ferdinand IN
