Sony mbx-49 Where can I find the internal fuse on the sony mbx-49 motherboard ? F2801 I believe.

alan susans Jul 14, 2007

vaio pcg-fx103 vaio pcg-fx103

2 Answers

Anonymous

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 [email protected], "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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624 Answers

What model PC did this come out of?

Posted on Jul 14, 2007

Anonymous Jul 14, 2007

Gsxr Nutter,

I?ve worked on a few Viao?s in the past and haven?t run into a motherboard fuse nor have I seen any references elsewhere. That doesn?t mean there isn?t one, just means I can?t find any reference to one.

Can you actually see a fuse on your board or are you having problems powering up your laptop? If it?s the latter laptop power issues are more typically related to the AC adaptor, the power socket/plug. Let us know..

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