mste video problem ...

[frank.lukas]

I have some video problems with a atari mega ste mainboard. Any ideas?

[Tomswork]

The video jittering is most likely the psu and or the capacitors in the video circuit.

Tom

[exxos]

Could be bad connection on a sync ...

[frank.lukas]

I done all ...

The same fault are also in the RGB Video Mode.

My guess is that the combo chip mmu/glue/blitter is faulty, I dont know? Can I test the chip?

[exxos]

Can only really test the chips in a different machine...

Though someone else has a odd video issue as well https://www.exxosforum.co.uk/forum/viewt ... =23&t=3681

[frank.lukas]

Can only really test the chips in a different machine...

... not practical because it is a 144pin SMD