"egb" wrote in message
oups.com...
I bought a used non-working 7905. Have almost everything fixed except:


When increasing the trace brightness to an acceptable level there is a
halo present. It is not a uniform halo, but is displaced slightly up
and to the right of the trace, probably 20% brightness at normal
brightness of main trace.

Are you sure all of the CRT voltages are within specifications?