[Johnson] My Ranger resto update

[Jim Brannigan]

Cal,
I just removed the front panel and VFO shield from my Ranger.
The front panel was easy, but be very careful of the VFO vernier.  The
vernier is connected to the VFO capacitor shaft with a very fragile mica
insulated coupling.
In order to release the coupling from the capacitor shaft, look under the
chassis for a 1/4 inch diameter hole that will allow you to reach the set
screws with a screwdriver. It's a little tricky to get to the screws.

The VFO shield:
Remove the keyer chassis and remove the side panel from the VFO compartment.
Remove the top shield.
For the rest of the shield, remove the nuts from all the spade lugs.
The screws that hold the spade lugs to the shield are a very tight fit to
the phenolic boards in the VFO.  You will have to gently work them around to
remove the shield.

If you have any questions, let me know.

Jim

> All:
> Just wanted to say "thanks" for the fb with regards to the 18k resistor. I
have since ordered some 20k 5watt resistors.
>
> Here's what happened so far: I tried firing up the xmtr last Saturday. All
seemed well until I saw arcing and sparking in the 6AX5 rectifier. Well, I
tried replacing the 6AX5 with a new military surplus unit. Same results but
in effect, I ended up damaging the tube. I stopped any more power on checks
and did some resistance checks. The arc turned out to short the filaments to
the cathode. What I suspect is that one of the tubes or circuits fed by the
l.v. p.s. is shorting after the tubes warm up. On the 6AQ5 current
protection tube for the 6146, a 005uF cap on the screen grid had bubbly wax
around it. This cap is suspect and at first I thought this may have been the
culprit until I saw the schematic and found it was a bypass for the h.v.
p.s. coming from that 20 kohm power resistor. But I never in my who BA
"career" did I crack open an EFJ Ranger/VFO. We'll see what happens when I
take off the front panel and excise the VFO out of its lair. To be
continued.
>
> Cal, N6KYR.