Can we get plugin lamps working in the Tektronix 7603?

bobd426_at_yahoo.com
Date: 01/22/05 

Date: 22 Jan 2005 01:26:18 -0800

Most of the plugins for the Tek 7603 workhorse scope will not show
their lights when their switches are pushed in with the 7603 (and
apparently a lot of other early Tek scopes), whereas they do show in
the 7904 and other high numbered models. Is their a way to rectify this
on the 7603?