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Amiga computer related discussion => Amiga Hardware Issues and discussion => Topic started by: sniken on May 19, 2008, 05:29:54 AM

Title: Alice failing?
Post by: sniken on May 19, 2008, 05:29:54 AM
One of my A4000 has a display issue. Every now and then the screen does a quick tilt to the side. I suspected my monitor at first, but after testing it with a different A4000 where this didn't happen I'm thinking it could be the Alice chip. I've looked around for any leaking capacitor, but didn't see any.  
Title: Re: Alice failing?
Post by: Argus on May 19, 2008, 10:29:46 AM
You may want to replace those little silver cap capacitors anyway, even if they are not visibly leaking.  They can either leak and destroy traces/pads or dry out and lose functionality.  Replacing them is not a major job for the average home solderer, or a good electronics repair shop could do them pretty quickly.  I prefer to do my own.  That way if something goes wrong I don't regret having let someone else mess around with an expensive antique motherboard.
Title: Re: Alice failing?
Post by: motorollin on May 19, 2008, 10:35:19 AM
"Alice? Who the **** is Alice?"

--
moto
Title: Re: Alice failing?
Post by: weirdami on May 19, 2008, 11:17:21 AM
Alice, Sweet Alice (http://www.imdb.com/title/tt0076150/)
Title: Re: Alice failing?
Post by: Marcb on May 19, 2008, 11:27:48 AM
Quote

motorollin wrote:
"Alice? Who the **** is Alice?"

--
moto


:laughing:

First thing I said to myself when I saw the thread!
Title: Re: Alice failing?
Post by: sniken on May 19, 2008, 11:35:26 AM
How to find a repair shop that wont charge me €100 an hour... I guess hardware this old can go "boom" or "frzzz" anytime, unfortunately.
Title: Re: Alice failing?
Post by: weirdami on May 19, 2008, 12:38:10 PM
I had an old VCR that a guy refused to repair because people kept bringing them back in saying that he didn't fix something or that he broke something on it because, from what he said, even after he fixed the thing they brought it in for, something else would just go wrong on them because they were so old. So, he stopped fixing some things because of the hassle.
Title: Re: Alice failing?
Post by: rkauer on May 20, 2008, 05:41:38 AM
 Simply swap the electrolytic capacitors on the motherboard and you are set!

 People always complain for "I have random lock-ups, my video... , bla bla bla."
 
 If you need, I give you a complete list of all capacitors an A1200/600 need, even with they motherboard's assignments.

 PM me and I'll post the list right here.
Title: List of A600/1200 capacitors
Post by: rkauer on May 20, 2008, 06:56:52 AM
 As promised, here is the list of all electrolytic capacitors in the 600/1200 motherboard.

 Just change all the caps. Costs less than US$9.00!

Here comes the "shopping list":

18 caps (all electrolytics)

3 units 10Uf x 16 volts SMD

5 " 22Uf x 35 Volts SMD

2 " 47Uf x 16 Volts SMD

4 " 100Uf x 65 Volts SMD

2 " 470Uf x 16 Volts Regular size

2 " 1000Uf x 10 Volts Regular size


 If somebody need the motherboard code of every cap on the above list, send me a mail. The table is not hugue, but demands time, since I don't have it in digital document form.

Be happy! (http://www.amigabr.org/uploads/smil47e876b1cbff5.gif)