60 Hz is ... high frequency?
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Re: Kind of a different question...
your meter is not showing it right - i'v seen that with flukes before, i think they filter out high frequency stuff.Leave a comment:
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Re: Kind of a different question...
Use your AC Volt meter to measure the Voltage between AC outlet ground and the metal part of the Macbook.
Plug the Macbook power supply into the GFCI outlet then use your AC Amp meter between outlet ground and the metal part of the Macbook to see how much current you are seeing.Leave a comment:
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Re: Kind of a different question...
apple: "that's not electricity your feeling, it's euphoria from the joy of owning apple"
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Re: Kind of a different question...
might be worth asking apple what to do ..or maybe first ask if you should be feeling electricity on the metal parts .Leave a comment:
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Re: Kind of a different question...
As in infinite resistance or 0 resistance?Leave a comment:
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Re: Kind of a different question...
Can confirm that the metal stud is grounded. Connect a grounded Apple charger cable to it and your problem should be solved.Leave a comment:
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Re: Kind of a different question...
That's a good idea ... I'll have to see what I'm dealing with once I get the PSU apart. The default configuration of the PSU is an adapter with just two prongs sticking out... no power cable at all... and the PSU is so big and heavy, plugging it into a power strip that way is useless.Leave a comment:
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Re: Kind of a different question...
no, they are just using the backing to secure a thermal fuse.Leave a comment:
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Re: Kind of a different question...
The magic smoke leaked out of this one ... https://www.badcaps.net/forum/showthread.php?t=94756 seems that round button is connected somewhere.Leave a comment:
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Re: Kind of a different question...
if it's a true ground pin why doesn't #%&*$ offer a 3 prong head for that charger?
But even if they do, where's that Y capacitor? Is it in the head?Leave a comment:
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Re: Kind of a different question...
maybe you can just replace the 2pin socket with a cloverleaf styleLeave a comment:
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Re: Kind of a different question...
the metal in the socket bit is probably just for strength.
meter the resistance between that stud and the macbook body with the charger connected.Leave a comment:
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The charging indicator light on my ASUS X54H laptop is always on even when the charger is disconnected.
Windows also shows ''Plugged in'' when charger is not connected.
This problem started year ago gradually, when unplugging the charger the charging light took several seconds to disappear, then minutes, and now almost always on even when unplugged for an entire day.
Strangely, before sometimes immediately when plugging in the charger the charging light went away, and later came back with it connected.
If I let battery run out and say it has 3% Windows will... -
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... -
ISL6257HRZ ISL6257HRZ-T Laptop Battery Charger Datasheet
Highly Integrated Narrow VDC Battery Charger for Notebook Computers
The ISL6257HRZ ISL6257HRZ-T is a highly integrated battery charger controller
for Li-Ion/Li-Ion polymer batteries. ISL6257 is designed for
Narrow VDC applications where the system power source is
either the battery pack or the regulated output of the charger.
This makes the max voltage to the system equal to the max
battery voltage instead of the max adapter voltage. Operating
at lower system voltage can improve...11-05-2024, 04:43 PM
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