I've removed the vertical units in order to check the centering. I've
adjusted R93 on the vertical amplifier for the trace to be in the center.
It has slightly improved the readout but it seems the bottom character line
is still slightly too high. If it try to adjust the vertical separation,
then the linearity for the top and bottom appear to be different. The top
line disappears the screens a lot faster than the bottom one.
I've checked the resistors around the output of the X&Y of U3480 and all
appear to be ok. R84 to R99.
I attach a picture of the screen. Should I expect the bottom line to be
On Fri, Aug 2, 2019 at 7:25 AM Craig Sawyers <firstname.lastname@example.org>
The bottom readout line on my 7704A appears to be out of position andhas gone up - it is located atone third of the screen from the bottom. The one at the top is ok andwell positioned. I tried touseoutside the CRT. I've