Amiga 2000 blurry screen

[Roger_S]

I Have a Picasso II in my Amiga 1200. But as I changed the PSU from my 2000 I now have no TICK signal. No SD or VGA will work anymore.

[Zac67]

With a non-Amiga PSU you'll need to set J300 to 2-3 (A500 tick/_VSYNC).

[CLS2086]

Do you mean the elco's around the Zorro Slots? They all seem to be fine.

You need a true tester to check them ! they could be nearly 'dry' internally...

[Roger_S]

Than it is not easy for me to test the functionality. I'll just exchange them with same type.

What if I would change all the video chipsets, like Agnus and denise, could that help?

@zac67, The jumper is set to 2-3, but I thought/read that no SD of VGA card would work anymore.

[Zac67]

@Roger
J300 determines where the _TICK signal for one the CIA clocks comes from. Usually it's derived from mains frequency (thru the PSU), on the A500/1000 they use the video's vertical sync which is cheaper - but with ECS you can change the vertical frequency which will make the clock unreliable. If you don't use 'custom' video modes, it shouldn't matter.

[Roger_S]

OK, I'm going to try my picasso II and a different monitor that I can hook up to the RGB port.