Quote:
Originally Posted by bandersen
Also common for the 270pF coupling mica caps to go bad. You can leave all the tubes in circuit when injecting.
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I have video on the CRT injecting at the plate of the 6AL5 pix 2nd detector. When I inject into the cathode of the same there's no video. I've swapped tubes 3 times and all three test OK. Wiggles don't change anything either.