[raydog]

My latest project is going to be a Philco 90 Highboy. I am getting a list of caps and resistors together and came across two items under the chassis that I can't identify or find in the schematic. They were obviously added at a later time. Can or should these be eliminated? The chassis is a mid production, (1 #47 tube). One part is wired between resistor #25 and cap #23, and the other tied to the junction of parts #18-19 then goes to resistor #20. I am guessing they are replacement resistors added to or the previous tech left the originals were in place?

http://www.nostalgiaair.org/PagesByModel...013882.pdf

Thanks, Don

[Ron Ramirez]

What you are pointing to looks to me like a paper capacitor without its cardboard sleeve/covering. Eliminate it, making sure everything else is connected according to the schematic.

[morzh]

It does look like a shucked paper cap!

[raydog]

Sounds fair. There is wax visible on each end, so that makes sense. I won't try to figure out why they are there, and rewire the new caps and resistors per schematic. I also noticed both electrolytics were tied to ground rather than one going to centertap. Other than that the rest seems to be original.

[codefox1]

Agree, if it ain't on the original schematic, probably not needed or worse.

Bear in mind that now obsolete beacons at near IF frequency sometimes caused interference decades ago, but I think they are all gone.