Hello all,I have built a octopus/huntron tester for checking component.The
problem is after about 15 minutes I loose my x-horz trace.It starts to
flicker and then turns into dot only.When I wiggle the volts div. knob on
the upper left of the scope it trys to come back.The vert.trace works
fine.When the scope is first turned on it works fine until it warms up.I
want some expert advice before attempting repair thanks.I am self taught
in this hobby but having a blast.