Starting work on the Sylvania 7140M

[bandersen]

Originally Posted by Eric H

Good grief John, you nailed it on the first try.

I swapped out V17 with one of the Sound i.f. tubes and the set started working!

I retested that rube and it checks very good, however bumping up the heater a little made the Short light start to flicker a little, after that it stayed on dimly, testing it the first time it just didn't get hot enough to show up the problem.

The second tube was a even little jittery when tapped so I tried another, now it's really solid.
Those same tubes work fine in the Audio section but I'll replace them anyway.

It's been messed with so much I still need to run through that setup procedure but at least it's working, when I get the new HV rectifiers in I'll try it with the 17" tube.

Sweet Glad you got it working.

I've been finding more and more that tube testers don't tell the whole story. That includes tubes that test weak but work just fine!