EEVblog Electronics Community Forum
Electronics => Repair => Topic started by: m3vuv on February 02, 2021, 09:26:09 pm
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Hi all this is also posted in the general computer section,hope thats ok,i have a dell inspiron 1720 lappy,it runs an upgraded 2.5ghz cpu 3 gig of ddr2 ram and a 256 gb ssd hard drive,after doing the upgrades about a year ago,i brought a new charger for it and got a 9 cell battery,tbh it was used %99 of the time plugged in,recently on boot it says cant determin the power adaptor,please insert a 90 watt or higher power adaptor,press f1 to continue etc,trouble is it runs slow and the battery icon says plugged in not charging,,do you think its the battery or power adapter,i have a battery tab welder and a few 2500mah lion 18650 samsung cells,i heard if the battery controller board id disconected from the cells it fries it,any advice how to sort this?,btw im using win7 32 bit,cheers in advance
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Well i think i got it sorted,i checket continuity from the barrel jack center pin(data) black colour wire to the charger pcb,it was o/c,stripped the plastick from the barrell conector jack,the black wire should of been soldered into the middle of the center pin,it wasnt,looks like crappy non existant bad chinky qc,it looked like it had just been tacked on the side of the pin and not inserted into the center of it and flooded with solder,its saying its charging now,happy days!
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hope you got it
most laptops I worked on fireup w/o battery. try that for a test
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This is the all-too-common Dell laptop charger ID failure. Fortunately yours just had a bad interconnect rather than a blown OneWire EPROM:
http://www.laptop-junction.com/toast/content/inside-dell-ac-power-adapter-mystery-revealed (http://www.laptop-junction.com/toast/content/inside-dell-ac-power-adapter-mystery-revealed)
More:
https://hclxing.wordpress.com/2014/02/06/hacking-the-dell-laptop-power-adapter/ (https://hclxing.wordpress.com/2014/02/06/hacking-the-dell-laptop-power-adapter/)