[AMRadio] Ranger stuff


Brian Carling bcarling at cfl.rr.com
Tue Oct 24 21:02:20 EDT 2006


> Brian Carling wrote:
> > Jack - the typical, normal HV winding of a plate 
> > transformer consists of this:
> > 
> > RED/YELLOW = center tap.
> 
> Problem is, this apparently isn't normal.
> 
> The red leads go up to the function switch.

Jack the ONLY thing from a Ranger power transformer 
that should go to the function switch, is the PRIMARY wiring, 
which should be BLACK wires.

Red is for the high voltage secondary. It very much sounds
like someone has mis-wired this transmitter.

The BLUE wires are for the low voltage secondary.

See pages 6, 7, 20, 21 and 22 in the manual for all 
the advice you nbeed for troubleshooting, and use the 
schematic to help you rewire the thing according to 
the proper connections. PLEASE be careful around that 
high voltage, OM!

Do you have a schematic? Here it is if you need it for a free 
download. It's the last page of the manual.

http://bama.edebris.com/manuals/johnson/ranger/

It should help you find the problem pretty easily.
You should have two red  wires going to V11 pins 4 
and 6, which are the plates of the 5R4GY.

The center tap which is red and yellow striped
is supposed to go to ground.

If those red wires are connected to the  function switch that is a 
SERIOUS error.
DO not turn it on like that!
Each one of them has about 750 to 800V AC relative 
to ground (red/yellow) and a total of 1500V AC between 
the two reds. 





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