[Johnson] Ranger 1 with no grid current

[Harry Vaught, KT4AE]

I've had the following affect grid drive on my Ranger:

1. Meter switch needed cleaning.

2. R8 or R6 depending on schematic, but at any rate the V3 screen grid 
resistor had migrated to about three times its nominal value.

3. R9 toast. Mounted on the bandswitch under the chassis.  Accessible by 
removing the bandswitch shield.

None of these resulted in a total absence of grid current, but it was 
certainly reduced in some cases.

Good luck.

Harry, KT4AE
Maryville, Tennessee



On 5/22/2011 5:21 PM, Todd Nannie wrote:
> I have a Ranger 1 that is not showing any grid current on the meter when doing the tune-up procedure. It shows 32ma on the OSC setting, it shows a reading on Buffer and Plate (Don't remember exactly what those were) and no reading on Mod.
>
> I have replaced all of the electrolytic capacitors. Id not have a tube checker, but all of the tubes are at least getting warm/hot
>
> Any ideas?
>
> Thanks,
> Todd
> K2DN
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