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Amiga computer related discussion => Amiga Hardware Issues and discussion => Topic started by: dougal on November 03, 2011, 10:56:56 AM

Title: Think i damaged an A500 motherboard
Post by: dougal on November 03, 2011, 10:56:56 AM

I stuck the 512kb ram expansion the wrong way. Now when i try and switch it on i get a yellow screen. If i insert a ram expansion i get a green screen.

Title: Re: Think i damaged an A500 motherboard
Post by: mousehouse on November 03, 2011, 01:01:20 PM

Yellow was a chip RAM error I believe... maybe you fried the expansion board? Does it run without the board?

Title: Re: Think i damaged an A500 motherboard
Post by: dougal on November 03, 2011, 01:18:28 PM

Yes, YELLOW is without the expansion and Green with an expansion fitted.

Quote from: mousehouse;666357

Yellow was a chip RAM error I believe... maybe you fried the expansion board? Does it run without the board?

Title: Re: Think i damaged an A500 motherboard
Post by: mongo on November 03, 2011, 01:53:13 PM

Quote from: mousehouse;666357

Yellow was a chip RAM error I believe... maybe you fried the expansion board? Does it run without the board?

Green is a chip RAM error.

Title: Re: Think i damaged an A500 motherboard
Post by: mousehouse on November 03, 2011, 02:22:02 PM

Quote from: mongo;666361

Green is a chip RAM error.

I stand corrected indeed, Green is messed up chip RAM or a b0rked Agnus...

see: http://en.wikipedia.org/wiki/Power-on_self-test#POST_Sequence_of_Amiga

Yellow is the error my A3000D was giving me with incorrect clocking jumpers.

Title: Re: Think i damaged an A500 motherboard
Post by: dougal on November 03, 2011, 04:06:38 PM

Faulty Paula... Its fix now :) As soon as i replaced the PAULA it came up with that lovely Kickstart 1.2 screen. I'm playing midnight resistance right now