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SOYO SY-6BA+IV

Repairing of the Vcore circuit of SOYO SY-6BA+IV.
SOYO $B$N%^%6!<%\!<%I(J SY-6BA+IV $B$NEE8;2sO)$N=$M}!%(J

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I am running Celeron 566MHz at 893MHz. It worked 24 hours a day for more than a year but suddenly stopped and could not boot. I checked the voltages and found that the Vcore was about 0.7V and the ELC2 (1000uF) was broken.

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$B!!2wD4$K(J24$B;~4V1?E>$rB3$1$F$$$?$H$3$m!$(J $B%7%9%F%`$,5/F0$G$-$J$/$J$j$^$7$?!%(J $BEE8;$rF~$l$F?tJ,4VJ|CV$9$k$H!$(J $B!V%T!<%]!<%T!<%]! $B!!$=$3$GEE05$r%A%'%C%/$9$k$H!$(J CPU $B%3%"ItJ,$K6!5k$5$l$k(J Vcore $B$,(J 0.7V $B6/$7$+$"$j$^$;$s(J $B!J2<$N2hA|$N(J Vcore $B$H=q$$$?$H$3$m$GB,$l$^$9!K!%(J $B$3$l$O%3%s%G%s%5$,$d$i$l$?$J$H$$$&$3$H$K$J$j$^$9!%(J
$B!!(JVcore $B$K4X78$9$k%3%s%G%s%5$O!$(J ELC1 $B$H(J ELC2 $B$G$9!%(J $B30$7$F%A%'%C%/$7$?$H$3$m!$(J ELC2 $B$,MFNLH4$1(J $B$r5/$3$7$F$$$^$7$?!%(J $B%*!<%P!<%/%m%C%/$G$@$$$VEEN.$,2aBg$K$J$C$F$$$?$N$G$7$g$&$+!)(J $B!!$3$l$O(J 1000$B&L(JF $B$N(J $B!J$?$V$sDc(J ESR $B$J-pDcB;<:$J!K(J $B%3%s%G%s%5$G$9$,!$(J $B1~5^=hCV$H$7$F $B!!2<$N
Main board (41KB)

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$B!!$=$3$G8r49$7$?%3%s%G%s%5$r30$7$?$H$3$m!$(J $B$+$J$jJQ?'!&JQ7A$7$F$$$^$7$?!%(J ESR $B$,9b$/!$(J $BH/G.$,$"$C$?$N$G$7$g$&$+!%(J $B2<$N2hA|$G!$(J $B:8B&$,$$$+$l$?%3%s%G%s%5!$(J $B1&B&$,L$;HMQ$N$^$C$?$/F1$8%3%s%G%s%5$G$9!%(J $BI=LL$N?'$,$/$9$s$G$7$^$C$F$$$k$@$1$G$J$/!$(J $BDl$N%4%`$,$@$$$V$O$_=P$7$F$7$^$C$F$$$^$9!%(J

Condensers (8KB)

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TOP$B!!!!(JEmail to Kunihiko Nakano(c) NOV 9, 2004