[Premium-Rx] Watkins Johnson 8615D receivers

[Royce, Alan (ST)]

Does any one know where the power supply FET's, SCR, and the glass
diodes can be purchased?
May be some one knows the replacement part numbers?
Thanks
Al

________________________________

From: premium-rx-bounces at mailman.qth.net
[mailto:premium-rx-bounces at mailman.qth.net] On Behalf Of Jim Garland
Sent: Monday, January 19, 2009 5:32 AM
To: 'spencer bahner'; premium-rx at mailman.qth.net
Subject: Re: [Premium-Rx] Watkins Johnson 8615D receivers



I don't know the exact part used in your WJ receiver, but in receivers I
always use NTC Inrush Current Limiters, part no. CL-140, available at
www.mouser.com <http://www.mouser.com/>  .  These are rated at 50 ohms
cold, with a maximum stead state current of 1.1A. They cost about a
dollar.

 

73,

 

Jim Garland W8ZR

 

________________________________

From: premium-rx-bounces at mailman.qth.net
[mailto:premium-rx-bounces at mailman.qth.net] On Behalf Of spencer bahner
Sent: Sunday, January 18, 2009 10:28 PM
To: premium-rx at mailman.qth.net
Subject: [Premium-Rx] Watkins Johnson 8615D receivers

 

All-
 
If any of you have worked on any Watkins Johnson WJ8615D receivers that
have had the small inrush current limiters on the AC input to the
switching supply fail (killing AC power to the power supply), and you
have ANY idea as to the proper replacement part, please send me an email
or post for the group. This seems to be a common failure item when the
receiver is completely dead. Working units often have these showing dark
discoloration due to high heat disipation as they limit initial series
current upon receiver power-up.
 
Thanks all!
 
Spencer Bahner N7UMO

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