RCA portable insuffient B+ Boost

[ctc17]

Check the Boost filter cap. If it goes open it will cause this exact issue. Its a small value cap between the boost and B+.

Ring testing a flyback will only catch hard core shorts in the primary. I have 2 flys here that ring out at 22 rings which is excellent but provide plenty of smoke when in the set.

Keep a close eye on that flyback temp, if there is an issue causing excessive heat and current you can damage an almost impossible to find part.