Dove right in! Help with RCA 21-D-8628

[Electronic M]

Originally Posted by BandDirector

I have swapped the tubes a few times, will do it again later this evening to double check. I have made a list of the resistors and their capacities/wattages/variance level and will draw my own schematic that is more blown up than the one in my service manual. I did not purchase any of the needed resistors, instead I bought all the wrong values! But I'll keep them. PW500 is the vert/height board

This blow-up may be easier to read on my end!

You see the dashed line that represents the PCB on that schematic. You want to check every resistor right of the plate of the sync sep inside the box formed by the dashed line plus the hold pot and it's resistor.

If you don't have a socket extender another method is to use long alligator clip leads to bring hard to reach test points out from under the chassis.