Help needed A2000 R6.2

[lazIsMe]

Originally Posted by MigaTech

From your first video, it seems like an Agnus issue but then the second video, shows what looks like an RGB output problem.

Do you have access to another 8372A? That is the 1MB version found in A500 6A and A2000 model B up to 6.3.

Pins 79, 80, 81 on Agnus worth checking from video 1 result.

What version Denise have you installed?

8362 R8 A500 A2000 OCS.
8373 R4 A500 Plus A2000 ECS.

Pins 25, 26, 27 on Denise if version 8362 R8 worth checking from video 2 result.

No I don't have access to another 8372A and pin 73 just broke !!!!
I think that denise version is 8362 R8 but the marking is barely invisible

[MigaTech]

Did the pin have any signs of corrosion?

Pin 73 is A14, so it won't be able to address CR correctly, with that missing.

Now you have to replace Agnus. Unfortunately it isn't going to be a cheap replacement.

Unless there is still some pin attached to the IC. There might be still a possibility of using your damaged Agnus.

[lazIsMe]

The pin didn’t show any sign of corrosion. It just break when I put it back in the socket. I didn’t notice first but the computer refused to boot I checked all ICs and I saw that this pin was unfolded on top of the socket. I remove the ic and it break.
I’ve bought a replacement from Jens. It should be here tomorrow.
Wait and see …

[lazIsMe]

Hi guys !

I've just install the new Agnus chip received from Icomp and all issues seems to be gone !
It needs a lot of testing to be sure but I've made progress.

Thanks to all people that help me.

[lazIsMe]

Now the computer works well but it comes with a Impact A2000-HC+8 Series II and a A2630 accelerator.
The SCSI card work well with an SCSI2SD. The EPROM was corrupted but with a new one it works.
But the A2630 is not detected, I have checked all the traces connected to PROCESSOR SLOT, no broken traces. A2630 ROMS are versions 7.0.
It's like nothing connected.

Any advices ?