Mac iisi nubus issues

[imactheknife]

Recapped a barn find iisi and it came back pretty good so far. It chimes, boots, passes all tests i have tried on it. Only thing is i have 3 different nubus Ethernet adapters that are known good because i have another iisi to try on. When i stick any one of them in the nubus slot on this machine it turns on, no chime, screen comes on but nothing else. No mouse no floppy no raster. There was rodent piss on the board, the caps were decent, no trace repair needed on any or those. Psu is recapped too.

If i pull the nubus adapter out boots fine. Any ideas?

 

[chrisrueckert]

Could it be a power issue? Recapping the PSU and the logic board might also help. Aanother way to find out more would be to swap the PSU from the working si.

 

[imactheknife]

Could it be a power issue? Recapping the PSU and the logic board might also help. Aanother way to find out more would be to swap the PSU from the working si.

says recapped above. Thinking more a bad trace or something. Computer works flawlessly otherwise

 

[volvo242gt]

Maybe something between the PDS and the processor got damaged by the mouse pee. Some of the chips near the PDS look kinda gunky.

 

[Unknown_K]

Also depends on the current draw for the Nubus card (for example a Radius Rocket won't work).

 

[imactheknife]

Maybe something between the PDS and the processor got damaged by the mouse pee. Some of the chips near the PDS look kinda gunky.

This is where the urine was so will have to go over to this area. I think there is a iisi schematic?

 

[volvo242gt]

Looks like there is the bomarc schematic... In any case, that area does look rather gunky.

 

[Trash80toHP_Mini]

Also depends on the current draw for the Nubus card (for example a Radius Rocket won't work).

He mixed up the nomenclature, known good NIC in the PDS slot is causing the problem, no NuBus involvement. Power likely won't be the issue in that scenario.

BTW: Rocket works fine under RocketShare (RocketWare incompatible) in the IIsi, given my janky setup with a mauled IIcx form factor PSU sitting atop the FDD. RocketShare setup is all but useless given the crap Video of the IIsi, needs a second screen for the Rocket.