OK - I've got the information for anyone who also needs it.
How to remove horizontal bleed or blooming lines from a QHY9 mono camera.
I'm an electronics technician & it looks fairly simple.
Disclaimer:
A camera is a very delicate piece of electronic equipment & it needs
to be opened on an anti-static bench by a qualified electronics technician
who uses an anti-static wrist strap.
After downloading -
The document only shows arrow positions properly when I
enable editing in Word.
200% zoom is best for viewing.
The Pot to adjust is R27 but the measuring point is unclear.
It looks like its at the cathode end of a diode as marked.
The 2.2 Volts needs to be measured with an oscilloscope as per the photo.
I have not tried this adjustment yet but I will report back when I do.
It may be prudent to wait until I do the adjustment before anyone else
uses the information provided.
Anyone using this information does so at their own risk.
The document is here:
https://drive.google.com/file/d/0B2V...Z1RTl0Wms/view
cheers
Allan