[TenTec] SWR meter glitch on Scout 555

[Casey]

Hi All,

My Scout's meter is behaving strangely. Actually, I think the meter is 
OK, but the supporting circuitry is on the fritz. Perhaps someone here 
with more electronics experience than I could suggest some test 
procedures or likely components for failure?

- With the rig idle, regardless of whether the meter switch is swr or 
fwd the meter "twitches" upward half scale about every 5 to 30 seconds
- Fwd power seems to indicate correctly, but if I'm using Tune as soon 
as I switch it off the needle rises to 3/4 scale then drops to zero. 
Doesn't seem to happen if I just key the rig.
- The needle deflects left (down) in SWR mode regardless of the true SWR.

Voltage at the meter is about .1V at idle, rising to about 2.5V on Fwd 
mode, 30W out. The coil measures about 2K ohms.

Ideas?

73,

Casey, TI2/NA7U