i soldered in one of those ribbon cables on to my hp's laptop power button cause the old ribbon was failing. anyways i am having some issues with this new cable1 the laptop will power on by itself if i insert the ribbon into the motherboard connector2 the only way to power off the laptop is to remove the cable from the mother board connector and that means opening up the whole laptop3 like i said it will power on by itself so that means that i cant turn it on/off with the power buttonevery thing is soldered correctly i dont understand also i am not sure but does the cable have to be like the old one cause the new one i soldered in looks the same? could it be that it needs that one particular cable replaced again? please help me i am sad
Soldered where ? Most ribbon cables are never soldered.. They are designed for push / cold-weld fit to connectors And soldering the cable risks melting the insulation between the cores in it (as they are not designed for heat) if you solder the motherboard, you risk damaging the wires (and vires) in the several layers of printed circuits (they are quite fine, multi layered not dual external visible only) I suspect you have damaged the cable (internally) update: from those pictures, it is clearly meant to be purchased 'as an already assembled' piece What I suspect has happened, is that there is a small sliver of solder etc (or dirty flux) between the tracks. Those are really low current, circuits, so does not take much 'leakage' to cause a contact to 'appear' closed. Repairing such things, often requires a very very narrow soldering bit and also fine solder / flux. I have seen most people use a microscope to do those repairs before - due to the likelyhood of small bits getting in the wrong place (and tracking unexpectedly occur). A good flux remover / cleaner would be useful ? Is the cost a replacement button complete with cable not cheaper to buy (OKorder is my favorite location for PC parts, shipped in from HK typically)
Time to hang up our computer repair skills and take it to a shop...
