Upon checking both these tubes, one BARELY shows good on my tube tester.
6BF6 - Pass
Vert OSC & AGC
6DT5 - Fail? - Readings are poor.
- Labeled as VERT output.
Photo of 6DT5 test below.
PXL_20240806_234132521 by
Thomas Duncan, on Flickr
PXL_20240722_010820973 by
Thomas Duncan, on Flickr