11-18-2022, 11:33 PM
First, for those who want to follow along, here is the link to the schematic and original parts list (before changes) from this site's library: https://philcoradio.com/library/download...l.%201.pdf
Tonight I began to work on the bakelite blocks. The first two I tackled were the one which is not shown in the diagram, but which you can see in the picture in the top right corner. Once removed from the circuitry it proved to be a 3615-L, a simple .09 MFD condenser between the lug and the ground through the mounting screw. The other, number 17 in the parts diagram, is a 4989-AG, with 2 .09 MFD condensers in parallel between lug 1 and lug 3, and a 300 ohm resistor between lug 1 and lug 2. As is my usual procedure, I made a little tray from aluminum foil, and little supports from aluminum foil, and let the blocks sit in the oven at 350 F until the tar had melted out of them, then pulled the guts out with a pair of long nosed pliers. I will replace the single .09 MFD condenser in the 3615-L with a .1 MFD, and the 2 .09 MFD condensers in parallel with a .22 MFD, and the 300 ohm resistor with a 1/2 watt modern one. Then I'll put them back and reconnect them, and go on to others.
Tonight I began to work on the bakelite blocks. The first two I tackled were the one which is not shown in the diagram, but which you can see in the picture in the top right corner. Once removed from the circuitry it proved to be a 3615-L, a simple .09 MFD condenser between the lug and the ground through the mounting screw. The other, number 17 in the parts diagram, is a 4989-AG, with 2 .09 MFD condensers in parallel between lug 1 and lug 3, and a 300 ohm resistor between lug 1 and lug 2. As is my usual procedure, I made a little tray from aluminum foil, and little supports from aluminum foil, and let the blocks sit in the oven at 350 F until the tar had melted out of them, then pulled the guts out with a pair of long nosed pliers. I will replace the single .09 MFD condenser in the 3615-L with a .1 MFD, and the 2 .09 MFD condensers in parallel with a .22 MFD, and the 300 ohm resistor with a 1/2 watt modern one. Then I'll put them back and reconnect them, and go on to others.
