[Texasrocker]

If any techs here ever get the opportunity to electronically restore a Philco 49-1611 chassis, " pass"!! just kidding!! Here are some tips on the power supply section. This later model Philco chassis has a half wave selenium voltage doubler on back of the chassis. When replacing the old selenium back-to back units, the forward B+ voltages goes way "high"! To bring down the B+ voltage at the first filter capacitor, you will need to add a resistor that most of us restorers do not keep on hand. To drop the extra modern day a.c. line B+ voltage on these sets, requires adding a 18K to 20K (20 watt) wirewound resistor across the 1st filter cap to bring the B+ voltage back to reality. The double 1N-4007 diodes can be mounted under chassis on a added terminal strip. The new resistor can be mounted on a terminal strip on rear of chassis under the original heat cage that housed the original selenium units. This particular model Philco is a AC/DC filament string set that has a AM/FM chassis, and new filter caps won't fit in original cans unless using the new style "pencil" capacitors. Extra space under these particular chassis to add anything is very minimum indeed!
Just another tip from ol' Tex at http://www.texasvintageaudio.com Keep all those old Philco's sets working like new!