Recently I got a faulty laptop charger. Now that I want to make it work. How should I start with and what tools should I have at my disposal?
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Re: Find fault in charger
Get the case open using a blade along the seam and a multimeter for measuring inside.
Post back once you have it open. -
Re: Find fault in charger
Done that, just tell me how to find the faulty component?Comment
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Re: Find fault in charger
Post decent photos of both sides of the PCB so we can tell you what to measure.Comment
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Laptop Question
Hello,
I'm working on a Lenovo T460 that has been having trouble charging as of late. Its worked well since I've owned it for a few years. When I went to use it the other day it was dead and wouldn't turn on (was sitting on an Anker 65W GaN charger). After some fiddling with the charger I got it to turn on and start charging, but seemed like the charger was not working as it should (took a few plug and unplug cycles to get it to start charging).
A day later it was dead again and wouldn't boot/charge no matter what I did. No lights or anything when... -
The ISL88739 & ISL88739AHRZ are a highly versatile combo battery charger
configurable for operating as either a Hybrid Power Boost (HPB)
charger or a Narrow VDC (NVDC) charger, supporting 2-, 3-, or
4-cell batteries. Both configurations allow the battery to work with
the adapter together to supply the system load when it exceeds
the adapter capability, referred to as system Turbo mode. HPB
charger configuration reverse-boosts battery energy to the system
bus to help the adapter provide the system power in Turbo mode.
NVDC charger configuration...11-05-2024, 03:28 PM -
Hi, I have a Dell Inspiron 7567 LA-D993P that I've just got running.
There was corrosion around PU1503 which shorted PC1518 & blew PL1504. (Reference pictures attached)
I've replaced PC1518 & PL1504 & the laptop is now running however I now have another issue.
Here are the tested scenarios:
1. With the laptop running on battery, I plug in the 150W charger & the charger shuts off (no LED, protection mode) but the laptop remains running on battery.
2. With the laptop off, plug in charger (LED says on) & the front charging... -
this is a cross post.
the laptop charger does not work. no output voltage.
removed 18V and GND cable from secondary, left ID cable-- suspecting short in output cord and then measurements were made.
input cord is fine -- checked. 220 V AC
primary transformer voltage (V_DE) is fine - checked 310.1 VDC
secondary transformer voltage is 0V (V_AB) -dont know why
C1 and C2 are electrolytic caps marked at 470uF but reads 987 uF -- seems connected in parallel. V_c1 =0V and V_c2 = 0V....06-15-2024, 06:46 AM -
the laptop charger does not work. not output voltage.
removed 18V and GND cable from secondary, left ID cable-- suspecting short in output cord and then measurements were made.
input cord is fine -- checked. 220 V AC
primary transformer voltage (V_DE) is fine - checked 310.1 VDC
secondary transformer voltage is 0V (V_AB) -dont know why
C1 and C2 are electrolytic caps marked at 470uF but reads 987 uF -- seems connected in parallel. V_c1 =0V and V_c2 = 0V....
Comment