[Collins] kwm-2a problems
David Knepper
[email protected]
Sun, 1 Sep 2002 18:11:46 -0400
Jim and others, look inside your 516F-2 power supply to see if that No. 18
wire is attached to ground as it enters the grommet.
David Knepper - W3ST
Secretary to the Collins Radio Association (CRA)
Publisher of the Collins Journal
www.collinsra.com
CRA station call - W3CRA
----- Original Message -----
From: "Jim Brannigan" <[email protected]>
To: <[email protected]>; <[email protected]>
Sent: Sunday, September 01, 2002 4:49 PM
Subject: Re: [Collins] kwm-2a problems
>
> Take a look at the power plug and schematic. There was some
wiring/straping
> for 6/12/24 vac filament operation.
>
> Jim
> > Hi
> > Need a helping hand. all of a sudden lost filament power to all tubes
> except the string consisting of v-7,17,5,13 9,10 and 8. I see they are all
> in the same stringthe remaining string are also fed from the same pin on
the
> 516f2 supply, pin 8and 9 are tied together ,per my schematic.have voltage
at
> both pins but no filament lite in the remaining tubes. I keep looking but
> nothing pops out. see no burnt resistors,caps etc. I guess I need a little
> steering in the right direction.Any help on this problem would be a great
> help
> > thanks
> > dale k8peo
> > Sponsored by the Collins Radio Association
> > http://www.collinsra.com
>
> Sponsored by the Collins Radio Association
> http://www.collinsra.com
>