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kinu-garage / hut_10sqft

Computer setup tools for my own environment, and public discussion place holder.
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[kudu1] Sudden power off, not powering back up #537

Closed 130s closed 1 year ago

130s commented 3 years ago

While I was using Emacs this morning via synergy, the power turned off. Not powering back.

Things I've done but not effect:

130s commented 3 years ago

Finally opened a support ticket https://system76.com/my-account/ticket/64603

130s commented 3 years ago

In the meantime, I'd like to try one other piece of troubleshooting. Please remove the charger from your Kudu Pro, then completely remove the battery from the back. With no power going to it at all, please press and hold the power button for 30 seconds. After that, please release the power plug, reconnect the battery and charger, and try turning it back on again. Any changes?

I assume this is meant to be power button.

release the power plug

Unfortunately still the same.

I'm curious to test if the charger works or not. But I'm out of the idea. I sought in my house another charger that could connect to the laptop but I couldn't find any. I'll probably buy a multi meter.

130s commented 2 years ago

Using multi-meter I bought https://github.com/130s/hut_10sqft/issues/581, I verified the charger puts out 19V (ref. PC Monkey's video). Next verify other electronic components PC Monkey suggests to look at.

130s commented 2 years ago

Will try internal power plug. https://www.youtube.com/watch?v=YBhsVHideGE&t=173s If I can swap it, that's great. That might disable warranty but that's ok, I have already decided not to request repair by the manufacturer.

If it doesn't work, either send back to the manufacturer ($84...) or reluctantly bring it to a local e-waste https://github.com/130s/30y-130s_life/issues/920#issuecomment-925491543.

130s commented 1 year ago

Plugged to power source (using the power adaptor that says chicony on the label) but the issue is the same.

130s commented 1 year ago

Plugged to power source (using the power adaptor that says chrony on the label) but the issue is the same.

The power adapter in the original shipment is the following. Verify I'm using correct adapter. If NOT, verify if the one I'm trying provides sufficient output.

130s commented 1 year ago

Looking at the spec of kudu6, which must be much newer than kudp1 but may be in the line of similar architecture, I see:

  • Power 230W (19.5V, 11.8A) DC-in port Barrel size: 5.5mm (outer), 2.5mm (inner) Included AC adapter: Chicony A17-230P1A AC power cord type: IEC C13 48.96Wh 4-cell Lithium-Ion battery Model number: NH50BAT-4

So I guess the adapter is likely Chicony too for kudp1, which also sounds familliar (so I might have just been wrong to say chrony). Watt-hour is smaller than kudp1 https://github.com/kinu-garage/hut_10sqft/issues/537#issuecomment-1639985400. Either way, this kind of reassures that my Chicony came with kudp1.

Just FMI I asked GenAIs. > Q. What is the required performance of the AC adapter to be functional for the laptop that comes with "Extra 62.16 WH 6 Cell Smart Li-ION Battery"? > > A-ChatGPT. To determine the required performance of the AC adapter for a laptop with an "Extra 62.16 WH 6 Cell Smart Li-ION Battery," we need to consider the power requirements of the laptop. The power consumption of a laptop is typically measured in watts (W). > > The watt-hour (WH) rating of the battery indicates its capacity, which is a measure of the total amount of energy it can store. In this case, the battery has a capacity of 62.16 watt-hours, which means it can supply an average power of 62.16 watts for one hour or a proportionate power for a different duration. > > To ensure that the AC adapter can adequately power the laptop and charge the battery, it should have a power output that matches or exceeds the laptop's power consumption. Laptop power consumption varies depending on factors such as the hardware configuration, display size, and usage patterns. > > Generally, laptops have AC adapters with power outputs ranging from 45 watts to 230 watts. To determine the specific power requirements for your laptop, it is best to refer to the manufacturer's specifications or documentation for the laptop model in question. The manufacturer typically provides the recommended or required wattage for the AC adapter. > > You can find this information in the user manual, on the laptop's product page on the manufacturer's website, or by contacting the manufacturer's customer support. Providing the specific laptop model would allow for a more accurate determination of the required AC adapter performance. Bard > The required performance of the AC adapter to be functional for a laptop that comes with a 62.16 WH 6 Cell Smart Li-ION Battery is 689.97 watts. This is calculated by multiplying the battery's watt-hours by its voltage, which gives us 62.16 * 11.1 = 689.97 watts. > > The battery's watt-hours is a measure of its energy capacity, while the voltage is a measure of its electrical pressure. The AC adapter must be able to provide enough power to the battery to charge it at a reasonable rate. If the AC adapter is not powerful enough, the battery will not charge properly or may even damage the battery. > > Here is the Python code that I used to calculate the required performance of the AC adapter: > > ``` > import math > > battery_watt_hours = 62.16 > battery_voltage = 11.1 > > required_adapter_wattage = battery_watt_hours * battery_voltage > > print("The required adapter wattage is", required_adapter_wattage) > ``` > > Use code with caution. Learn more > The output of the code is: > > The required adapter wattage is 689.9759999999999 > > Therefore, the required performance of the AC adapter to be functional for a laptop that comes with a 62.16 WH 6 Cell Smart Li-ION Battery is 689.97 watts. > > Q. How did you get voltage 11.1 above? > > A. I got the voltage 11.1 from my knowledge. The search results indicated that the nominal voltage of a 6 cell lithium ion pack is 21.6V to 22.2V and the maximum charge voltage is 25.2 volts. The average voltage of a 6 cell lithium ion battery is 11.1 volts. > > I assumed that the battery in question is a 6 cell lithium ion battery and that it is at its nominal voltage. This is because the battery would not be able to charge properly if it was at its maximum charge voltage. > > If you have more information about the battery, such as its specific model number, I can try to get a more accurate voltage reading.
130s commented 1 year ago

On the back of my kudp1 I see power DC input is 19.4V, 4.7A.

130s commented 1 year ago
  1. [x] Power cable that connects directly to motherboard --> Meausred 19.4v by multimeter. https://www.youtube.com/watch?v=HpabvrNaodU
  2. [ ] RAM test https://www.youtube.com/watch?v=P3I7dDpkJps
  3. [x] CMOS battery reset

Just responded to tech support.

I know this ticket is closed but just a follow-up. I decided to bring it to recycle. https://github.com/kinu-garage/hut_10sqft/issues/870

I did verify the charger, and the power jack (the one that connects directly to motherboard) drawing appropriate voltage around 19.4v by multi-meter. I also replaced CMOS battery CR2032. And yet, I still don't see the computer turning the power on, nor the charging light on.

I'm still uneducated but I conclude myself something on motherboard needs to be looked into, which I don't bother taking time this time.

Thanks for the support!

Still interested in looking into mother board but I'm also afraid I ran out of time this time.

Just FI: