[Johnson] Ranger 1 with no grid current

[Todd Nannie]

I found the problem.
R5 (68K ohm) resistor was bad(open), replaced it and now the Ranger seems to be working fine. Using a dummy load I can hear my CW and phone signals from another radio in the same room. I have no idea how much output I have. I need to hook it up to a watt meter.

One problem I am having is that the OSC meter is peging hard to the right.
I have checked the 3 ohm SH1 resistor and it checks out at 3.5 ohms.
All of the voltages for the 6CL6 check out fine. I get negative voltage on pins 2 and 9 and the screen voltage is 99 volts.

Any ideas?

Thanks,
Todd M. Nannie


--- On Sun, 5/22/11, Harry Vaught, KT4AE <kt4ae at bellsouth.net> wrote:

> From: Harry Vaught, KT4AE <kt4ae at bellsouth.net>
> Subject: Re: [Johnson] Ranger 1 with no grid current
> To: 
> Cc: johnson at mailman.qth.net
> Date: Sunday, May 22, 2011, 6:58 PM
> 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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