Just Bought a Classic II with a problem.

[EmNem543]

I just bought a classic II with the lines and garbage on the screen. I don't have the machine yet, but does anyone have a good idea of what the problem is? I can do a recap and cleanup of a battery bomb if that's what the issue is.

 

[EmNem543]

or any tips on what to do before turning it on or anything

 

[joshc]

All Classic IIs, if not yet restored, need at the very least both the logic board and analog board recapping. I wouldn't do further diagnosis until you've at least completed that step first. See where that gets you, the symptoms might change or dissapear completely after a recap. Often some chips will need thorough cleaning and/or removal and resoldering - the main ones being some logic ICs next to the battery holder/CPU, the Egret chip (responsible for the startup circuit), and the DFAC (Apple sound chip) and nearby onboard RAM chips. Make sure everything is squeaky clean after your recap.

 

[dochilli]

Yes, a recap should be done. Then check the voltages at the floppy port. Sometime the analog board needs some new components. Hopefully you do not see a bombed battery on the LB...

 

[cheesestraws]

Yeah, the CII gets very grotty inside.