Acer Aspire A515-55-56HH Won't start after power port replacement

Changing any component on a laptop especially a power port with its tiny pins to mainboard traces soldering you need a microscope and micro soldering tools, and experience, you must have not soldered all the pins properly, or the component has shorted out and you need a new power port as these replacement power ports that you are using could be a cheap copy and not like the oem power port. Take the power port out (buy a new power port from a known brand) and clean the power port pins and all the mainboard traces from solder with a desoldering braid solder wick, always use proper and genuine Amtech flux and good quality solder, as all this will give you a perfect job and that is what a good technician will do. Good luck.

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If you don't know how to do a power port short check, then you should not attempt it as yu have no idea what the components are, its not just a matter of putting a multimeter + prong and the - prog and herring a beep of the short, I know how to do this but I can't advise you in case that you short out other components which I don't want you to do and take responsibility.

You cheapest and best fix is to take your laptop to an expert technician that knows what he is doing, as a power port swap is a very simple job that should not take more than 15min, but it has to be replaced with a known good quality port as allot of the power ports sold today are cheap and nasty and will not last like the oem power port fitted to your laptop. Try www.electronicloop.de and see if they have the port for your A515-55 laptop, as they have reputable parts. Good luck.

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SawHave you checked if the primary voltages are present?