Hello. As in the title. The laptop was originally heavily dropped I had to replace all the housing and install new SSD. Laptop worked fine until I noticed that the battery is no longer charging. I performed basic actions, and went to buy new battery, same result. When I connected the old battery back the laptop no longer stays on. It switches itself off after couple of seconds. I must say that before I replaced the housing the laptop suffered from occasional power loss when moved around, it was due to the loose screw that got stuck in-between the heatsink and the capacitor PC1123. Now when I checked the motherboard I noticed little bit overheating on the PQ305 and some cold soldering. I fixed it and the IC stays cool, but laptop keep on going down. I'm stuck please help
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Lenovo Z51-70 Previously battery not charging now turns off after couple of seconds
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Re: Lenovo Z51-70 Previously battery not charging now turns off after couple of secon
Hello again. I have done some measurement on PU301. First table contains voltages when battery unplugged and power cable plugged,
Code:1- 20.5V 2- 20.5V 3- 20.5V 4-26.3V 5-3.3V 6-2.77V 7- 0.02V 8- 0.15V 9- 0.01V 10- 0.01V 11- 3.38V 12-3.38V 13- different measurements from 0.35V to 0.7V 14- from 0.35V to 0.68V 15- 3.3V 16- 0.42V 17- 3.64V 18- 3.65V 19- 3.52V 20- 1.82V 21- 0.81V 22- 0.01V 23- 0.01V 24- 6.08V 25- 5.8V 26- 5.58V 27- 3.72V 28- 20.1V
Code:1- 20V 2- 20V 3- 20V 4- 23V 5- 3.6V 6- 0.47V 7- 3.69V 8- 0.46V 9- 0.4V 10- 1.37V 11- 3.72V 12- 3.7V 13- 0.6V 14- 0.46V 15-3.5V 16- 0.67V 17- 4V 18- 4V 19- 3.85V 20- 2V 21- 1.02V 22- 0.2V 23- 0.27V 24- 6.3V 25- 6V 26- 6V 27- 4V 28- 20V
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