|
Oh you shouldn't have touched the discriminator or if transformers!! To align it requires proper equipment!!
Never mind for now. There was nothing wrong with the IF adjustments. The problem is most likely the local oscillator in the tuner is off frequency.
Because you have messed with the adjustments, you may now have lost the reference between sound and video. The best thing is to not touch any of the IF adjustments and try and get sound by slowly adjusting the tuner oscillator frequency adjustment.
So long as the discriminator and IF adjustments are back to where they were, you should be okay.
I looked at the 721TS notes and I do not see a master oscillator adjustment. I suggest you first try exchanging the oscillator with the other 6J6 tubes in the tuner to see if that brings back the audio.
Last edited by Penthode; 08-24-2022 at 01:04 AM.
|