Display was flickering, according to overclock.net forum this was caused by broken capacitors. Mine had two broken 820uF/25V capacitors, next the quest to find a few replacements, and get them replaced.
Going to try to repair using the guide at http://www.overclock.net/t/636236/samsung-226bw-flickers-for-a-few-minutes-when-powering-on/50
Got mine soldered and the screen is happy again :-). Thanks you internet :-)