Light streaks from a Panasonic KV-S3065L

[NHAnimator]

We scan a number of photographs and are getting light streaks across
all images. We have about 750,000 scans completed - a variety of older
paper documents and photographs. We recently replaced the front and
rear image sensor covers as these were quite scratched and they seemed
like the obvious problem. But we were wrong.

Suggestions?>

Thanks,
John

 

[Don Phillipson]

We scan a number of photographs and are getting light streaks across
all images. We have about 750,000 scans completed - a variety of older
paper documents and photographs. We recently replaced the front and
rear image sensor covers as these were quite scratched and they seemed
like the obvious problem. But we were wrong.

Suggestions?>

Omitted by the OP:
1. Do the errors repeat uniformly (same image under same
conditions) or occur at random?
2. Hardware, e.g. if the scanner is connected via USB does
its cable have RF filters?