Wait wait Butch, before this email, everyone has been referring 
to the Bottom cover, not the top cover, so which one is it? Jim 
WA6EKS

 ----- Original Message -----
From: Butch Bussen <[log in to unmask]
To: [log in to unmask]
Date sent: Fri, 30 Jan 2015 19:56:13 -0800
Subject: 590 am jumper

Here is all the guy wrote me.  I had a picture, but a friend 
looked and he
said it wasn't much help.  I don't know why I think there are two 
jumpers
involved, but I do, although this guy talks like only one.  I 
just don't
remember for sure.

Sorry to hear of your vision problem.  If you remove the top 
cover with
the front of the 590 towards you, the jumper should be found on 
the
right hand side of the top board, towards the back of the unit, 
near a
cross head PCB mounting screw.  If you want me to e-mail you a 
photo to
show your friend where I think it is, I can do that, I took some 
when
I did a repair on my 590 and added a buffer amp for a second 
receiver
/ panadaptor display.


73
Butch
WA0VJR
Node 3148
Wallace, ks.