Question about Sony MBX-49 ASSY Motherboard

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

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Re: sony mbx-49

Sorry for the delay responding. Info comes from 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, "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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Re: sony mbx-49 - Sony MBX-49 ASSY Motherboard Motherboards

What model PC did this come out of?

Posted on Jul 14, 2007

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Keyboard is not working

you might have uninstall the keyboard restart your computer then reinstall it and its drivers
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Apr 28, 2011 | Sony MBX-49 ASSY Motherboard

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Hi, i have a sony vaio laptop with no display, have tried a external monitor still no display, have lights, fans,CDRW runs any idea's ?


Please check your video card. I gues you have a defective one. If the video card is a problem, change it with same type and model.

Best regards,

Oct 08, 2009 | Sony MBX-49 ASSY Motherboard

2 Answers

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you may have a compatible issue with the ram, your board bois may not support that manufavtures brand or coding of the chip set you are running. have some else try some other ram from another manufacture.

Feb 11, 2009 | Sony MBX-49 ASSY Motherboard

1 Answer

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1. check bios for first boot option to hard drive.
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Jul 03, 2008 | Sony MBX-49 ASSY Motherboard

3 Answers

Sony pcg 9h4l motherboard issue


Try to power off unit and remove the battery. Then press and hold power button for 30seconds.Put the battery back and turn it on. If it turns on turn it back off again and remove the battery. Connect your VAIO using the AC adapter only. If this will not resolve your issue you can check this with SONY or any certified service center.

May 23, 2008 | Sony MBX-49 ASSY Motherboard

1 Answer


hi there,
the correct replacement part number would be :- 1-680-358-11

and u can get this board at the links provided:-

Apr 10, 2008 | Sony MBX-49 ASSY Motherboard

1 Answer

Sony Vaio PCG-FX150

The noise you can here are probably the platlettes or parking head that are present inside the harddrive. Dropping the notebook would more than likely of damaged the harddrive more than any other peice of hardware.

Aug 21, 2007 | Sony MBX-49 ASSY Motherboard

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