View Single Post
  #14  
Old 02-23-2025, 12:28 PM
bandersen's Avatar
bandersen bandersen is offline
RCA 741PCS
 
Join Date: Mar 2009
Location: Chicago, IL
Posts: 8,821
Probably. There's a felt pad in each corner.
Time for a power up attempt.


OK, nothing. B+ is close to spec, but no HV and no sound.
Started by replacing a few caps on the horizontal oscillator. One had split open and one looked like a mica cap, but it's leaky paper inside.


That got the oscillator running and we have HV


Vertical is crunch though so went after that next.
Replaced a couple caps on the vertical output and that helped a lot.




Injected a signal next but cannot lock horizontal. Just not enough range on the freq or phase controls.


Replaced a couple caps on the 6AC7 AFC reactance tube.
All of these are paper caps and all are bad.
The one on the left was actually getting warm. Replacing that got a lock!




Not bad for just replacing a few caps and open power resistors.
__________________
Here are my Vintage Radio & TV YouTube Channel and Photo Gallery
Reply With Quote