Scrolling white bars on Mega Drive 2

I am experiencing scrolling what bars on multiple Mega Drive 2 consoles that I currently have. 3 of them.

I have tried different AV cables but that did not resolve the issue.

What could be the problem?

Please see below picture.

 

Are you trying to use a PAL system on an NTSC TV, or anything of that sort?
The problem seems too weird for RGB to fix but I've never heard of it before.

 

My TV can switch between PAL and NTSC automatically. I even tried to switch manually to PAL. Tested on another TV but had same issue

 

Tried a different TV? or different type of AV connection? (RGB/Composite/RF/Svideo)

 

Tried different TV, same problem. Tried RF. Not the same problem however the picture got much worse. Will try RGB.

 

Can you try a different power supply for the MD?

 

Most like a power supply issue (if you havn't already tried a different one)

 

Thanks guys. I was using an NTSC power brick on a PAL console. It completely eliminated my previous issue!

However, I think I am experiencing jail bars now :/

Please see picture below. I am using a universal power supply. 9V 2A.

Could it still be a power supply issue?

 

looks like jail bars, but its normally only visable in blues. Is composite all you can use?