Hi once again,
found was a bad solder connection on the adjusting pots mounted on the
board that the flyback transformer is on.
The flyback coil is NOT mounted on the analog-video-board. You can see
the flyback, when looking from top of the opened Lisa besite the tube
and down on the bottom of the case cou can see a black flyback coil
approx 3 fingers diameter (or 5cm or 2 inch), with (if I remember
right) 6 cables in and one thick brown or red cable out, which is going
to a rubberred connector at the top reverse side of the tube.
This connection is under high-voltage !!!
Despite of that, the analog-video-board behind the tube has a coil,
too. But it's not the flyback. It's a serial connected coil to the
deflection unit of the tube.
greetings TOM from Bavaria
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