On Sunday 27 April 2008 23:47, James Sweet wrote:
I would desolder the blue cathode pin on the CRT
socket and tap the neck with the monitor on. If you can still repro the
symptoms, then the problem is probably in the tube.

Taking what bz said into account, that the Trinitron tube has a single electron
gun, doesn't this mean that if the screen turns fully blue (and not red and
green as well, meaning white), including retrace lines, that the short can
exist nowhere except inside the tube?