My Brand New CTC-7!

[old_coot88]

That's an example of why restored sets are always a "work in progress".

[stromberg6]

Hi, Very glad to know it was only a 12AZ7 gone bad. Just a little hint about color loss or intermittent, but only for the early production chassis with wax caps: wax dripping on the -Y output sockets can cause loss of color(s). Cleaned up the socket, and put in Orange Drops. Problem solved!
Kevin

[SwizzyMan]

Originally Posted by stromberg6

Hi, Very glad to know it was only a 12AZ7 gone bad. Just a little hint about color loss or intermittent, but only for the early production chassis with wax caps: wax dripping on the -Y output sockets can cause loss of color(s). Cleaned up the socket, and put in Orange Drops. Problem solved!
Kevin

Thanks for the tip! I used a 12AT7 in place of the 12AZ7. 12AT7 is identical to the AZ7 except for heater current and a lower gain. The 12AT seems to make the reds a lot more balanced with the other colors even with red turned all the way up.