[TouchPad Q&A, Help & Troubleshooting] HP_TOUCHPAD:
Anything is possible with electronics, it does not take much to get defective. But here is my story and experience with this Tablet.

I purchased the first Tablet the first day of the fire sale in 2011, which I still have and the battery is at full capacity as when new. Is kept charged at 100% off the charger on a desk.

Around 2017 I came across an article on how the tablet could be debrick and be functional again. As an experiment I wanted to try the magic, I found a Tablet locally on craigslist that the seller acquired with a lot of other devices and did not have a clue what the tablet was or even if it work, it was all dead unresponsive. I payed $20 for the experiment. I connected the Tablet using the original charger and after some time the Home LED light started the side to side dance after a while the dead battery symbol showed up and finally booted. The Tablet only need it charge and it was not a candidate for the debrick experiment. I found another tablet that came with a wireless charger and also bought it, and got three more that also came with the wireless charger. I gave them away to family members which are still been use today.

I was still on the search for that brick Tablet that I could apply the magic and get it working. I made my first and last offer ever on ebay, the listing was for ( eleven , HP Touchpad with no chargers and no guarantee of working for $220 ). I sent an offer of $110 for the 11 Tablets with free shipping, to my surprise the seller accepted and I had to pay. It is obvious that no device will work with no electricity, the first step was to charge and see the outcome. Some came up very quickly others took time, I found out that warmer temperature made them take charge faster. In about two weeks all of 11 Tablets got full charge and perfectly working, it was a mix of 16GB and 32GB models.

There was no way to try the debrick revival, then I got into learning all about it from tweaking the kernel to all the Linux and Android software. It is the perfect toy to learn with a lot of information and ROMS out there. I pushed the CPU speed to the limits and even running the Tablet inside a freezer to get it the maximum frequency possible. From all the extreme settings all of them survived. There was only one that I had to use for parts as the touchscreen was defective.

See the attached post:

https://xdaforums.com/showpost.php?p=81075317&postcount=100

The A6 controller board is attached to the battery, which regulates the current. If the board is damage by force charging, the Table will not work.

If the bootie is damage then the debrick will flash the new code to make it boot. This process does not program the A6 controller or battery.

If the battery is damage or the A6 controller, there is nothing the debrick can do.

The battery can be full and taking charge, but if the bootie is damage it will not power on, then debrick needs to be done properly and the process must finish successfully.

Hopefully my experience could help in some way. I will try to get the debrick properly working with the ubuntu 16 as originally intended to have a system that can flash the bootie with no errors.