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Subject: repaired ECS weird poweron issue[long]

Date: 10/07/03 at 1:17 PM
Posted by: Giuseppe Dia
E-mail: nephero@freemail.it
Message Posted:

I have an ecs k7s6a (with amd xp2200 and qtec 550W, nvidia gf400mx) in my wk that was repaired after a the +5v of the on-board usb connector got in contact with ground, blowing up the trace from the +5 to the capacitor near (I can tell which one, if you need). The board rebooted and in the next post, the usb was useless.
A quick fix with a wire to repair the burnt trace proved effective and the wk is now rock steady and with no problems, the usb is perfectly working but...
Now and then it needs to power on 3 times before posting correctly. The first two times it keep is sorta rebooting (you can hear the caractheristic cdrom noise) and blank screen (no signal in the monitor), and powers off holding the powerbutton, the third time it just stays there (no post, but no reboot looping,and powers off holding the powerbutton ) and then it post correctly.
To add complexity, it has (and i can remember it did this weird thing before the matter with the usb), problems with memory, as it keeps doing the memory test looping if you have Quick Boot disabled.
I need help to : separate the issues. All these are two separate problem? If so, how I can repair it? I saw a lot of modifications for k7s5a to solve the 'ghost memory' issue and no one for the k7s6a. I cannot determine the point where i can lower the voltage supply to the sis745 (can you provide datasheet?). I know I should trow it away and buy another one, but otherwise is working just fine, seems a pity to me. On the other hand, it would be a fine hack to recover it. Thanks and sorry for the long post.
Giuseppe Dia

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