Tremolo works then stops working.

[flyry]

Hello.
It's a Gibson GA-20T with 2-6V6, 1-5Y3, 2-12AX7, 1-6SQ7, 1-5879. I just put in all new tubes and changed the electrolytic caps. Before and after the parts change everything worked normal except the tremolo which works great except when the depth and frequency are turned all the way up. When the depth and frequency are turned up, the tremolo fades away and the regular signal is amplified. Any ideas to solve this problem would be greately appreiciated. Thanks. Ryan.

[drewl]

Check the resistors in the circuit.
They often drift up in value, and turning up the controls may cause the circuit to stop oscillating.