I would like to solve a mystery regarding Transwarp GS failure.
One day, I powered on my ROM03 IIgs and the screen was frozen with rows of mixed colours (green / grey).
My TWGS was upgraded with new GAL and overclocked up to 12.5Mhz. I even tried to restore it to stock speed, without any lucks
Then I've replaced the PSU and the CPU cable I've ordered from ReactiveMicro : by miracle my Transwarp worked correctly.
I would like to understand how this failure had occurred ? The CPU ribbon was already replaced ages ago.
Could be possible that the CPU ribbon was the problem, or the original PSU, or both of them ?
Many thanks for your insights.