11-18-2011, 04:25 PM
Eureka! The problem ended up being a well-disguised broken ground strap from the tuner to the chassis. I should have gotten a clue earlier when I noted that getting my hand or a tool anywhere near the tuner caused frequency changes, but one doesn't think of broken ground braids..
It tracks a lot better now, but still won't drop in perfectly. It's up to 20 KHz off in the middle of the AMBCB if I align it to be spot on at 600 and 1440 (and it's way off at the top: 1600 comes in at 1660).
It tracks a lot better now, but still won't drop in perfectly. It's up to 20 KHz off in the middle of the AMBCB if I align it to be spot on at 600 and 1440 (and it's way off at the top: 1600 comes in at 1660).
