My 1st Predicta

[DaveWM]

fixing for a friend, only had minor issue, needed a new vert lin pot, the sectional cap for the vert out k bypass was open, so I restuffed it (also had some screen caps in there), left the others alone (doubler and filter b+ filter).

would not lock vert sync, had a very high sync tube plate load resistor. Other than that it was fine. The IF audio tube was weak, and has an intermittant socket (guess that is it the tube has a sweet spot that make it work). I checked the HOT K current its in spec at 100 ma as long as the screen is set to the min to just fill out the width. The HOT had -35v on the grid, should have been -45v, tried swapping out the tubes little change.

checked the grid resistance it was high, SHB 700k was 1.2 meg. there are 3 resistors that make up the total. I decided to leave it alone since the only way to fix is to crush the resistors, and pig tail from the top. Its pretty tight where they are so 1st do no harm.

anyway I am giving it back to him for a long term burn in, if goes well he will get the cabinet repainted and some new grill cloth installed (he has the right stuff). Should be nice when all done, I just figured it should be watched for a month or two before getting the nice paint job on it. That way I will not have to worry about it if something goes wrong in the short term. Of course with all those old resistor still in it I suppose it will need service at some time in the forseeable future.