[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
> ______________________________________________________________
> Hallicrafters mailing list
> Home: http://mailman.qth.net/mailman/listinfo/hallicrafters
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Hallicrafters at mailman.qth.net
>
> List Administrator: Duane Fischer, W8DBF
> ** For Assistance: dfischer at usol.com **
>
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>
> 



More information about the Hallicrafters mailing list