The PHILCO Phorum

Do you typically replace the older Philco resistors ?  I’m referring to the ones that Philco used in the 30’s and early 40’s radios? I recall reading a post a while back where someone mentioned these resistors usually are not as reliable as others. 
I’m asking because the Philco 40-180 console that I recapped a few years back started to lose the signal after about 45 minutes of playing. I tested and swapped out the tubes and the issue was still there. I then decided to replace the original resistors that tested good when I recapped the radio and the radio plays good now. 
I did find that one of the original resistors had a hairline crack that wasn’t visible as it faced the chassis.

Hello Tucker,
Well I personally only replace the resistors that are bad !
The very early ones are called Dog Bone resistors because their shaped like a dog bone .
Sincerely Richard

Hello Tucker. I usually replace all resistors, even if they test correct. I barely find time to get into the radio once, so all caps and carbon get replaced. Probably overkill, but it is inexpensive overkill. Take care and BE HEALTHY! Gary

Over many years at this hobby now replace them all. Have found sets that all were high others only 1 or 2 and then down the road back working on replacing the others. Posting a link to some info on resistors, well might say blowing my own horn.  https://philcoradio.com/phorum/showthrea...#pid177816

I only replace those badly out of tolerance.
Those within 50% I parallel with a newer one, hidden under the original.
Those within 25% I simply ignore.