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OCAU News |
More on Dud Athlon 700's.
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Sunday, 14-May-2000 18:21:36 (GMT +10) - by Agg
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Skull tells me he pulled apart one of these dud 700's and found what looks like a missing component on the PCB. If this is the case, the dud CPU may be able to be fixed by soldering the relevant component back on (we don't know what it's supposed to be yet). He writes:
I bought one just before Easter and opened the case to put a GFD on and the component at location c153 on right hand-side of pcb behind where the cache chip is looked as if it had been put on then removed, there are no other signs of tampering ala rebadged cpu's just this one anomaly, it almost looks as if the resistor or capacitor (not sure - little brown thing in technical terms) was soldered on during assembly and either didn't take properly and the machine pulled it off again or it was removed before finally assembly.
Addendum: He tells me that he doesn't necessarily have one of the "duds", his CPU does work, but does not overclock at all. So this may not be the cause of the other CPU's failing.
Addendum #2: Got another email on the subject, filling me in on the mystery component. Note that this may not fix a "true" dud, but it would probably help a CPU in the same boat as Skull's. FragMagnet writes:
The missing component is a grey or green capacitor. I broke a pair of these, tightening a K7 500 to a pelt block. Just measure the capacitance of the other side, and replace the missing one. I bought Qty 25 for the heavy sum of $2 U.S. These are a different spec. than my .25 micron CPU, as I compared them to my 550 .18, so measure whacha got !!
Addendum #3:
Fragmagnet updates:
after rereading it (it was late last night!) the capacitor colour should be grey or yellow (NOT green)
So don't look for green :)
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