Admiral 14R12 Restoration

[old_coot88]

Originally Posted by Kevin Kuehn

So were the channel 3 coil modules already in the correct location? I'm not even sure if that A8 adjustment can cause the tuner IF to be out by 4MC. Something sure seems to be throwing your tuner IF output off.

Referring back to the screen shot in post# 197, if he's getting pic and sound correctly with the fine tuning around mid-range, then the osc. frequency is correct. The osc freq varies with the fine tuning, and has no bearing on the IF response curve. In fact the osc should not even be running during the alignment procedure.

(I don't have the schematic.) The tuner may or may not have a mixer plate coil adjustment. If there is, it may have some effect on the IF response curve.

Crist, was there a particular reason you opted to do an IF alignment?