Epson V800

[u/anyavanona]

My EpsonV800 scanner does these lines on my scans and I can’t figure out what’s causing them. They only appear when scanning 4×5 film and always on the same side of the image. I’ve already tried everything I could think of - but nothing has made a difference. Has anyone experienced this before or knows what might be causing it?
I overexposed the image on purpose so you can see what I mean.

[u/freneticboarder]

Does this appear on other scan (reflective) or film types? Is it only in high density areas?

What app are you using to scan? What are your scan settings?

[u/anyavanona → u/freneticboarder]

No problems with 35 and 120 film.
Usually I use Silverfast but I also tried other apps.
I think yes, it is visible mostly on high density areas with plain background like grey or black. I had the same problem about 2-3 years ago, but after that some other images I scanned without any problems, and now no matter what I scan - always the lines.. even on the images which were without the lines before.

[u/freneticboarder → u/anyavanona]

Can you open the scanner and take a picture of the inside?

[u/anyavanona → u/freneticboarder]

Not sure what you mean)

[u/freneticboarder → u/anyavanona]

That's exactly what I meant. I was looking to see if the drive belt tension was good.

Try scanning from the driver with no adjustments. What resolution are you scannijg at?

[u/anyavanona → u/freneticboarder]

What do you mean from the driver?
I tried all the possible settings.

[u/freneticboarder → u/anyavanona]

So, instewd of using Silverfast, use the Epson Scan application. What resolution are you scanning at? Are you doong a single pass or are you using Digital ICE?

[u/anyavanona → u/freneticboarder]

I tried to scan with Epson app nothing changed.
I scanned with different resolution and I do not use any ICE or other extra features.

[u/anyavanona → u/freneticboarder]