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FT-980 tuning issues


 

Got one with an interesting problem that I thought I'd throw out to the group before digging into it:

The particular '980 in question was my main 20-40-75M rig for a number of years, where it's always worked flawlessly. I moved it into the digi-modes operating position (where tuning is predominately done via CAT control). I fired the rig up today after an extended "off" period of a few weeks and wanted to do a little tuning around the bands with the VFO.

The problem is that the VFO doesn't want to tune reliably after the rig has been on for a few minutes. Going up in frequency results in almost no change, while going down shifts the frequency somewhat...though not as smoothly as a properly working rig. Spinning the VFO knob rapidly allows for tuning - albeit jumpy - in either direction.

The Band Up/Down and 5KHz Up/Down buttons work properly.

I'd seen the condition once before with this particular rig. Changing the memory backup batteries fixed it then, but now is a different story. It's also misbehaving with no batteries installed.

Anyone seen similar weirdness with theirs?

73 - Fred, N8YX

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