I reckon this is a dead motherboard - what do you reckon?
Laptop: Sony VAIO PCG-7R1M
- Powers on
- Black Screen
- CD Drive spins up
- HD spins up for a second, stops.
- Caps/Num/Scroll lock lights all on
- Battery not charging nor recognised by laptop
- No sounds.
- Fan doesn't spin up (at least not yet). Chips are getting warm though.
Have also tested:
RAM - works fine in another PC, working RAM in broken PC doesnt fix it.
Hard Drive - Working fine on another PC
External Video - No signal to external monitor
Have removed battery, holding power button to discharge etc etc.
This only really leaves the CPU or motherboard. Is there an easy way to test if a CPU is faulty without transplanting it to another machine?
I can possibly hook the LCD screen upto another laptop but I have a hunch it isn't the problem (tell me if I'm wrong!).
Laptops are not easy beasts to fix as PC's. Have a read at this procedure, you have come to the obvious conclusions. In my experience the components dont fail but the solder joints on the motherboard go dry (open circuit).
There are ways to repair motherboards, professionally and home grown. Have a read at the procedure first, this will give you an idea where you stand at the momemt.
Well I've followed all of the steps in the trouble shooting guide, including replacing and reseating all available components. Still nothing minus the 3 green led's.
As suspected, it must be a dodgy motherboard. The problem is Sony don't supply individual parts (even to vendors!) - they want me to ship it to them for the pricely sum of £470 (who in their right mind would pay that?!)
Does anybody know of a good supplier for new VAIO motherboards (replica or genuine). There are plenty of second-hand ones on eBay but they carry a £140 price tag! :upset:
The daft thing is Sony are probably losing money by being so inflexible with their parts - they only have to ship it out which only involves basic admin staff!
You dont get replica boards, it would have to be new or refurb, but still at a cost. Sony dont loose out, the laptop is designed around the mobo as one complete package, sold as a series/model unit for a year or two then its basically redundant, Sony move on with the next technology upgrades and this ships as the next series/model.
You could get the mobo reballed (reflow) at a professionable level at a cost, there are also some home grown methods that work (I've tried these). If you can afford it I would buy a new unit and sell the old for spares.
If buying from new, then there are operating rules that can lengthen the operational life of the unit.
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