12-02-2017, 06:00 PM
As long as the wire is connected to the anode of V2 (IF amp), I can turn the HT up to the full 200 V and it works perfectly. Take the wire off, and it is back to shrieking and whistling. The slug holes of both IF transformers are visible in the sides and are sealed with wax that has obviously never been disturbed, so at the moment, I am reluctant to mess about with them. Neither can I open the IF cans to check the capacitors because they are clamped firmly in place with a lip of the chassis steel pressing on the lower rims. If I forced them out, I would not be able to replace them. I put the sig gen on the grid of the EF39 and it seems to indicate everything is OK with the IF and output stage. Just can't figure out how the instabilty is hapenning at the moment. With the wire connected to the anode, I am amazed at the stability, volume, clarity and performance of the set!
Bob
Bob
