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Old 19th May 2017, 3:06 am   #47
dtvmcdonald
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Join Date: Mar 2016
Location: Champaign, Illinois, USA.
Posts: 227
Default Re: Marconi 702 advice

Here is the test card image.
The dark defects that look like somebody was at work with an eraser
probably are exactly that. The picture was made in the mirror. Is it front surface?

There is some difference in focus quality across the screen that changes
with the setting of the push-about coil. Its set so the picture
is centered.
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