Time for an update. I replaced C16, C20, and C21 which all measured 20+% low. I also spent some time swapping tube and seem to have found the right mix, note I did have a poor performing 6EJ7 tube. I might be getting closer, thoughts on what to try next?
- Does one of the 2 below attempts look ok?
- Are there components I should go back and check?
- It's possible a fresh attempt might yield 100% success.
- I can try again and maybe find a happy middle ground?
Attempt 1
After going through all of the IF alignment steps I was able get the markers and attenuation to match the Service Manual overall response curve at test point C2. But when going back and remeasuring at test point C1 the 41.25mc marker is not at minimum and the response in-between the 39.75mc and 41.25mc markers seems large, not sure if this is concerning. See the image below:
Attempt 2
Next I went back to test point C1 and found adjusting the 41.25mc trap was my best option to minimize the 41.25mc response while not messing up the overall response to bad, note the response in between the 39.75 and 41.25 mc markers is still large. Going back to test point C2 shows the 41.25 marker is not correct. See below:
