Plus/4 Service manualhttp://www.zimmers.net/anonftp/pub/cbm/schematics/computers/plus4/Plus_4...(1984_Oct).pdf This is a tinyurl for the service manual https://tinyurl.com/y9lqe4pu It is on page "8" (pdf page 13) Plus 4 Schematic #310164 (2 of 4) it is connected to the rf modulator (pin 3)
C21 & L4 were missing on 1 of my spare Plus/4 motherboards.
I have replaced C21.
Plus/4 Service manual
http://www.zimmers.net/anonftp/pub/cbm/schematics/computers/plus4/Plus_4...(1984_Oct).pdf
This is a tinyurl for the service manual https://tinyurl.com/y9lqe4pu
It is on page "8" (pdf page 13) Plus 4 Schematic #310164 (2 of 4) it is connected to the rf modulator (pin 3)
C21 & L4 were missing on 1 of my spare Plus/4 motherboards.
I have replaced C21.