New to Apple II

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New to Apple II

Hi!

I hope I've found the right place. I recently picked up an Apple II Europlus. Growing up in the UK these things were pretty scarce and at the grand old age of nearly 50, I've just gotten my first one. It had apparently been stored for 20 years.I've opened it up and cleaned it and given the PSU a full recap. All expansion cards have been taken out and I have only the power and video out connected.When I power on, I get a screen that looks like this. There is no beep (though I'm not certain the speaker works).

 

 

I've given all the chips a bit of a wiggle. I'm actually waiting on a new can of contact cleaner to clean and reseat them all properly.Is this screen indicative of anything? What are my troubleshooting steps?cheers!ecky

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That's often caused by a RAM

That's often caused by a RAM chip gone bad.  Sometimes a 74LS.  The Sam's book on troubleshooting and repairing your Apple II that you can find here might help:

 

https://commodore.bombjack.org/apple/apple-books.htm

 

Lots of other books you might like there too.

 

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softwarejanitor wrote:That's
softwarejanitor wrote:

That's often caused by a RAM chip gone bad.  Sometimes a 74LS.  The Sam's book on troubleshooting and repairing your Apple II that you can find here might help:

 

https://commodore.bombjack.org/apple/apple-books.htm

 

Lots of other books you might like there too.

 

Thanks! That is a fab stash of books. I grabbed the one you mentioned and the sympton described at the bottom right of p67 seems to fit.

 

 

 

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Thank you for this reference

Thank you for this reference and link. I have been reading some of the books.

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