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4

I think there are 2 topics going on here within this question: The value of waiting a period of time after removing the power from an electronic device. YES, 30+ seconds is a good "average" time to allow Capacitors, hard drives, RAM memory, etc have the time to power down and be ready for the 'power on' reboot sequence. The proper way to 'power down' an ...


4

If you'd paid careful attention to the wiring of the ATX plug you may have noticed that one of the ground connections had 2 wires going into it instead of one. Alternatively one of the +3.3V pins may have had 2 wires going into it instead of one. Some even have both (depending on the manufacturer's design). These extra wires aren't power wires, they are ...


3

The issue of loss of capacity with battery charging and discharging is due to crystallization of pure concentrated chemicals inside the battery. Once crystals start to form they do not want to revert back to a liquid state again, and the battery permanently loses some charge/discharge capacity. This is why sometimes old lead-acid batteries bulge outward ...


2

I'm sorry but it's very probable the the motherboard is broken. And maybe also the power brick. Usually there are fuses on the USB port but their main function is to protect from a overcurrent. Send the laptop to repair.


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There are all sorts of conditions than can affect this, but as a general rule of thumb, the faster you charge/discharge a battery, the more you will 'strain' it (lowering lifetime). Again, not always true, but as a general rule of thumb your wall charger will deliver more current than your PCs USB port, charging your battery faster. Therefore, the ...


2

Your question is a little hard to understand... But, I will take a shot: POE is a complicated topic, to begin with, the picture you show actually shows ubiquity passive POE... This is incompatible with the normal POE. To explain - Passive POE is a much cheaper method (Read here), as there is no negotiation with the device - if it is on, the POE injector is ...


2

Turned out to be the PSU! I bought a new one and it fixed the problem, permanently.


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I think having a stabilizer adapter will be safer. ( Those like travelling adapters). Due to different currents, it may damage the components if u do not use the adapter.


1

I'd be surprised if there's not a dupe for it already. There's a few things to consider here. Nearly every modern desktop would have a PCIe X16 slot (there's also x8 and x4 flavours, and you may have x16 physical slots that do x8 speeds and so on.). Most modern video cards would fit into a physical x16 slot. More powerful cards may need a 6 or 8 pin ...


1

You would be far better off getting yourself a suitably sized power bank product that can operate your tablet whilest connected to the power bank. The power bank would connect to the tablet with the normal USB charging plug. Trying to modify the tablet itself is a chancy proposition. There is a good possibility that the charger built into the tablet may be ...


1

The critical factors are voltage, amperage, and the plug that goes into the computer's charging jack. Your 19V is pretty common, but most newer 19V supplies have lower current -- but what you need is available (I bought a 19V, 90W supply recently for around $10). First, you need to determine the precise dimensions of the round plug that goes into the ...


1

Yes, make sure that if you are using Windows, you have set the policy to Quick removal. In addition, before removing, always safely eject the device from the icon in the bottom right... If your drive has multiple partitions, right clicking and choosing eject is not always good enough. That is down to the individual SSD and no one can say without ...


1

Generally speaking todays motherboards have 2 of the PWM headers for the CPU and any secondary cpu fan item (cpu-opt), these 2 connections are best used with PWM actual fans with 4 pin connections. Because the method of control is via PWM, the feed voltage is the same, so a 3pin fan will run at full speed. It is true that a 4pin actual PWM connection ...


1

There is no way to predict ATX PSU faulures without even taking a visual inspection at the unit. But if you opt for taking an inspection, consider that the 110V (230V) rectifiers are the components most prone to failure due to severe heat up caused by poor PSU cooling due to fan dust, sleeve bearing wear, undersized heatsinks typical of cheap PSUs, etc. ...


1

If you can't help it and need to use this specific underpowered power adapter but don't want to pretty much end up with a useless brick due to a severely throttled CPU, I just figured out the way to make it go to the full speed. Pretty much what you need to do is reboot into the BIOS and in Performance settings disable SpeedStep and C states (I'm not sure ...


1

I wouldn't go near foil. It moves, it shorts, it goes bang. If the socket is a 'pin in a hole' structure, making the plug a 'cylinder with a hole in the middle' then with a small screwdriver you could bend the pin slightly towards one side. if you can see inside the socket & determine which side the outer connection is on then bending towards that will ...


1

Your situation sound like a faulty power port. It seems from the comments you have an HP and they have a few kinds of replacement parts for that port depending on model: So you may have a solder to the board type, or a modular plug in type (not knowing the specific model). To your second question about positive, ground, and sense, you can see the ...


1

To answer your first question: Commercial chargers do not allow changing the charge voltage limit. Adding this feature would have advantages, especially for laptops as a means to prolong battery life. When running on extended AC mode, the user could select the “long life” mode and the battery would charge to 4.00V/cell for a standby capacity of about 70 ...


1

There are two Green LED charger indicators; one on the charger itself, and one on the laptop indicating a charger is connected. The one on the charger should be on solid as long as it is plugged in and receiving power. If that LED is blinking when it is plugged in, it means the charger is defective. Replace or borrow another to confirm. If the charger ...


1

Wall charger has adapter power of 25w compared to the usb charger where only maximum 10W available so wall charger is faster 2.5 times than USB Another fact is that Charging via USB decrease the life of battery because it generate more amount of heat which would degrade the battery life time.



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