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Topic Title: Help...how to cut the L11 bridge
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Created On: 08/16/2005 08:45 AM
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 08/16/2005 08:45 AM
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zooba
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Hi,
I've got a mobile duron 800 (morgan) running in a desktop. It's default voltage is 1.5v but the mobo reads it 1.6v. Now my mobo (KM4AM) doesn't support voltage mod so I was trying to cut the L11 bridge to lower it to 1.5v. And the bridge is very hard to cut. Can't break it using a knife. I think it must be some hard alloy can't be pure copper.

Does any one know how to cut bridge on a CPGA duron? Has any one tried that before? Hope I don't need a chainsaw to open it. Thanks in advance.

 08/16/2005 10:41 AM
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zooba
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Ok I got it. Blow the bridge with 5v leads of a PSU. Spark simple.

Now I have it running at 1G (5*200) at 1.5v. Can't go any higher at this voltage.
 08/16/2005 11:38 PM
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eddaweaver
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It should run fine at 1.60v or 1.65v.
 08/17/2005 05:40 AM
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zooba
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Yeah, but lower voltage is always a better thing. Now I oc it to 1.1G at 1.575v. 1.2G won't run even at 1.75v. Don't wanna go further with voltage in case it get burned.
 08/17/2005 08:04 AM
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eddaweaver
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1.575v is probably best then /smile.gif' border='0' style='vertical-align:middle' alt='smile.gif' />
 08/18/2005 06:37 AM
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zooba
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Truely is. Now it's my harddrive going too hot. Need to improve the draught.
 08/18/2005 09:26 AM
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eddaweaver
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vibrations from fans cause hdds to fail more than heat so be careful there...
 08/18/2005 11:10 AM
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zooba
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Thank you for your warning weaver. Actually what I'm think about is to seal all the openings at the back and sides of the case and leave only the PSU fan hole and the inlet at the bottom of the front panel where the HD is close to. So air only comes in through the front inlet and cools HD in the first place. How do you think that weaver?

P.S. My PSU has a 12cm fan so it should be able to create enough air flow. CPU temp is arround 40 celsius. Besides I don't have monster graphic card in the case, it's integrated onboard.
 08/21/2005 10:48 AM
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eddaweaver
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That sounds like a good idea. Sometimes the 'brand-name' companies do those kinds of tricks to improve cooling. Suspending a fan from rubber bands if a good old trick for beaing vibrations.
 08/23/2005 11:34 PM
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zooba
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It worked. HD temperature dropped from 48 to 41 celsius. Rubber band may be a good trick but I don't quite understand how to 'suspend' it while keeping it stable. I'll try to take the CPU fan off and use some heatpipe instead. Hope it could keep temperature at a reasonable level.


 08/24/2005 07:43 AM
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eddaweaver
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Twine tied to rubber bands; the rubber bands absorb all the vibrations.
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