help needed st8e antiblooming

hello,

i just bought a st8e with antiblooming in used conditions, and i have a little problem: in my first images , i see some little horizontals lines.
the images are reduced with offset, dark, flat with ccdsoft but lines are always present.
i tried with differents flat with differents levels, nothing...
what can i do?
thanks for your help.
michael

It's not blooming because blooms are always vertical. I had a simalar problem with an ST2000. Turned out it was the software. Try to reinstall the software or if possible use another camera control program.