RCA Victor 21-T-8205 White line in middle of picture

[old_tv_nut]

Originally Posted by ThePlague

I believe I did, but I will go back and re-do the procedure. Do you know what is meant by the term "motorboating" in the service manual?

Motorboating is a term usually applied to audio circuits. It is caused by a low-frequency oscillation coupled through the power supply, and sounds like a motorboat. You would notice it right away if it happened.

https://en.wikipedia.org/wiki/Motorboating_(electronics)