yurif74 Posted July 17, 2014 Share Posted July 17, 2014 Hello community, i own an atari xe gs that has a very difficult to track down issue! the machine power on perfectly on missile command/other cartridge/test menu/basic if keyboard connected but it completely HANG randomly ONE TIME in the first 5 minutes.. then i reset the machine and it never hang even if it is powered continously for days! but if i power down (with power switch) and then power back on (after at least 10 seconds) the issue come back! it lock one time the machine in the first 5 minutes i tested ram and rom and results are good, i do not really know how to put hands.. could someone help me please? thanks Juri Quote Link to comment Share on other sites More sharing options...
Grevle Posted July 17, 2014 Share Posted July 17, 2014 (edited) Had something similar to one of my XEGS. It may be a problem with one of your ram chips. Even thoug it passe the ram tests when it run, The ram can make it unstable periodacly. Also the XEGS can have some bad quality soldering on the mainboard leading to bad connection that needs some solder fill. Edited July 17, 2014 by GentleBaron Quote Link to comment Share on other sites More sharing options...
Paul Westphal Posted July 17, 2014 Share Posted July 17, 2014 That sounds about right. You might Also try a different power supply. You probably have the small epoxy filled p.s., which are pretty nasty little buggers..I've seen them go out slowly... Quote Link to comment Share on other sites More sharing options...
yurif74 Posted July 17, 2014 Author Share Posted July 17, 2014 (edited) i tried 2 power supplies and one switching 5v 1.5A (should be enough) touched with finger ram chips, it feel the same temperature.. i made some tests, one ever strange thing is that if i reset before it hang, it doesn't hang!! Edited July 17, 2014 by yurif74 Quote Link to comment Share on other sites More sharing options...
Fletch Posted July 17, 2014 Share Posted July 17, 2014 I think this is a fairly common issue. My XEGM exhibits similar behavior. However, A few hits of the reset button fixes the freeze for me. Quote Link to comment Share on other sites More sharing options...
Paul Westphal Posted July 17, 2014 Share Posted July 17, 2014 Might be the mmu going funny/out. Common problem. Quote Link to comment Share on other sites More sharing options...
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