Question about Sony B-9986-107-1 Motherboard Sb Mbx-197 P43 -2

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Sony MBX-197 problem?

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Posted on Jan 02, 2017

SOURCE: sony mbx-49

Sorry for the delay responding. Info comes from http://tech.groups.yahoo.com/group/Laptop_Repair/message/646 Joe K Sony Vaio Hi Joe I have a unit now with the MBX 49 board that is totally dead does not charge battery or work from a known charged battery. The small fuse at the rear F2801 is OK, 19V on input to Q2803 nothing out from one that I worked on earlier I noted that this should have 19 on the output. This is a fet and is not being swithed on as the gate is also at 19V not pulled low as for P channel fet. Rich --- In Laptop_Repair@yahoogroups.com, "Joe" wrote: > Hi Richard, > > Does this laptop use the MBX-49 motherboard? > > check the voltage coming from the DC power jack at the back of the > unit. > > If it is the MBX-49 board, on the back of the board toward the top, > (directly behind the CPU socket) there are about 4 or 5 chips there, > those control the voltage / Speedstep / and regulation to the > processor. > > Let us know if that is the MBX-49 board. > > Joe K

Posted on Aug 20, 2007

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