[Coco] coco 3 composite output

[Didier Derny]

I have a coco 3 with a really bad composite output

- unusuable in 80 columns
- bad in 40 columns
- very bad in 32 columns

is it normal ?  is the composite doomed and the only way to get a 
correct image to use rvb

my machine has a problem and the output can be improved by repairing it

any idea ?

comparatively the composite output of the coco 3 is quite good


thanks

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didier