CTC-4 Director 21

[old_tv_nut]

Did you check L71 and R68 also?

Edit: also R69, L70, and the contrast control - these are all things that load the input or output of the delay line and need to match the impedance properly to prevent echos.

[SwizzyMan]

Originally Posted by old_tv_nut

Did you check L71 and R68 also?

Edit: also R69, L70, and the contrast control - these are all things that load the input or output of the delay line and need to match the impedance properly to prevent echos.

Everything tests fine except for maybe the contrast control. It reads 21ohms at full clockwise and about 1k at full counter-clockwise. I dont think that is right.