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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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Posted to sci.electronics.repair,uk.comp.sys.laptops
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laptop power fault: compaq presario C300EA
I have a Compaq laptop Model Presario, service tag C300EA that will not
start. It's this one: http://www.microdevices.lk/images/Laptop.jpg the motherboard is an IBL30 LA-3324P and they retail for about £125. ouch The problem is when I plug a power supply into it and press the on/off button the power led flashes rapidly for a few seconds and then cuts out. I then have to wait about a minute before it will light up again. I've tried three different power supplies, one of them coming from a battery/voltage converter and all three power supplies produce the same fault on the laptop so it's not the power supply. It acts the same with or without a battery fitted. When the power supply is plugged in I did notice the battery icon flickers all the time with no battery in. I also connected an amp meter to the power supply and when the power light does flicker there is virtually no current draw into the laptop. I split the chassis to take a look and saw that the power socket wires go straight onto the motherboard. There is no power board or daughtercard as such.. does anyone have an idea if there's a known component that causes this problem? or is it a case of new motherboard? thanks for any pointers. |
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