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.
$B!!;d$N%a%$%s%^%7%s$O!$(J Celeron 566MHz $B$r(J
893MHz $B$K%*!<%P!<%/%m%C%/$7$?$b$N$G$9!%(J
933MHz $B$G$b0BDj2TF/$9$k$N$G$9$,!$(J
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893MHz $B$K$7$F$$$^$9!%(J
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$B$^$?5/F0$7$J$/$J$j$^$7$?!%(J
$B$d$O$j(J Vcore $B$,(J 0.7V $B6/$K$J$C$F$7$^$C$F$$$^$9!%(J
$B$?$V$s:G=i$K(J A $B$+(J B $B$I$A$i$+0lJ}$,;`$s$@$?$a%7%9%F%`$,IT0BDj$K$J$j!$(J
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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
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ELC2 $B$,MFNLH4$1(J $B$r5/$3$7$F$$$^$7$?!%(J
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ESR $B$,9b$/!$(J $BH/G.$,$"$C$?$N$G$7$g$&$+!%(J
$B2<$N2hA|$G!$(J $B:8B&$,$$$+$l$?%3%s%G%s%5!$(J
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TOP$B!!!!(JEmail to Kunihiko Nakano(c)
NOV 9, 2004