[Hallicrafters] SX-100 S-pmeter
Jim Murph
Murph at k5cxo.net
Fri May 7 15:51:18 EDT 2010
Joe had that problem before it turned out to be a bad resistor check the
voltage on the plate of V4 pin 5. since your comes and goes you may want to
watch the voltage for a while. If the resistors look ok then check or
replace the CAPs in that circuit C17. if still the problem continues
Jim K5CXO
----- Original Message -----
From: "jsloss" <k7mks at comcast.net>
To: <hallicrafters at mailman.qth.net>
Sent: Thursday, May 06, 2010 10:34 PM
Subject: [Hallicrafters] SX-100 S-pmeter
> Am restoring a SX-100 which has a wandering S-meter "zero" from band to
> band. In addition the meter needle does not remain steady when zeroed.
> Meter zeroed with antenna inputs grounded. V-4 6BA6 replaced with no
> improvcement
>
> Any ideas?
>
> Joe k7mks
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