Transform an Nvidia Shield TV into a portable!

How will it be done?

I found this thread while googling this topic so I guess I'll resurrect it

I've been thinking about this, Nvidia was was set to release an updated Shield portable and teardowns of the first gen shield TV looks like the main board could have been used in a device with a Shield Portable form factor. But I don't think trying to use the first gen boards would be a great idea. The second gen internals seem compact enough to transplant into something that can house the board and a screen without going more than maybe relocating some connectors.
The biggest issue I see is powering the thing. My immediate thought is to use a power bank as the supply to have a solution to handle battery charging. It will need to be sized for the STV and a screen (unless we have one that can be powered from one of the STV's USB ports).

The STV power brick is 19V 2.1A IIRC which does not fit any of the available USB type C power delivery profiles. I don't know if the STV and an LCD can stay in the 45w power envelope for those profiles I'm not sure if the cost difference between a 45w and 60w power bank would make that a choice to fret over though.

As a side note, a USB Type-C to STV power adapter could prove to be a popular idea based on STV users complaining about the lack of replacement power adapters.

For a screen, I was hoping a relatively cheap 720p HDMI based LCD used for something like a RasPi could work for the display. But I think the screen is potentially the easiest part of the build.

Then there is control. My immediate thought is to use the official STV controller. Connect it to the STV via USB. I don't know if it can run without the battery like this, but lets assume it can.
The other issue is that there is a lot going on in the controller which could be a real challenge depending on the form factor. My initial thoughts are to de-solder the pots for the analog sticks so they can be relocated. Do the same for the analog triggers.
Use other tactile switches soldered to the pads of the old buttons to allow the other buttons to be relocated. I don't know if the volume touch slider could be relocated easily , but I hope so. I would try and reuse the headphone jack so I didn't need to recover audio from the HDMI stream too.

For form factor, I figure something like the GPD XD would work. The bottom half could house the power bank, DC-DC converter, and modified controller. The top half would house the STV, the screen, and maybe a USB hub so there is more than one port left over.

The last thing I'd like to have in a project like this is some sort of HDMI switch that can detect if an external display is connected and automatically switch to it as well as change the mode to whatever the TV supports.

It may not be the Shield Portable 2 Nvidia was working on, but if such a project is possible, then it might be the closest we will get.

I found this thread while googling this topic so I guess I'll resurrect it

I've been thinking about this, Nvidia was was set to release an updated Shield portable and teardowns of the first gen shield TV looks like the main board could have been used in a device with a Shield Portable form factor. But I don't think trying to use the first gen boards would be a great idea. The second gen internals seem compact enough to transplant into something that can house the board and a screen without going more than maybe relocating some connectors.
The biggest issue I see is powering the thing. My immediate thought is to use a power bank as the supply to have a solution to handle battery charging. It will need to be sized for the STV and a screen (unless we have one that can be powered from one of the STV's USB ports).

The STV power brick is 19V 2.1A IIRC which does not fit any of the available USB type C power delivery profiles. I don't know if the STV and an LCD can stay in the 45w power envelope for those profiles I'm not sure if the cost difference between a 45w and 60w power bank would make that a choice to fret over though.

As a side note, a USB Type-C to STV power adapter could prove to be a popular idea based on STV users complaining about the lack of replacement power adapters.

For a screen, I was hoping a relatively cheap 720p HDMI based LCD used for something like a RasPi could work for the display. But I think the screen is potentially the easiest part of the build.

Then there is control. My immediate thought is to use the official STV controller. Connect it to the STV via USB. I don't know if it can run without the battery like this, but lets assume it can.
The other issue is that there is a lot going on in the controller which could be a real challenge depending on the form factor. My initial thoughts are to de-solder the pots for the analog sticks so they can be relocated. Do the same for the analog triggers.
Use other tactile switches soldered to the pads of the old buttons to allow the other buttons to be relocated. I don't know if the volume touch slider could be relocated easily , but I hope so. I would try and reuse the headphone jack so I didn't need to recover audio from the HDMI stream too.

For form factor, I figure something like the GPD XD would work. The bottom half could house the power bank, DC-DC converter, and modified controller. The top half would house the STV, the screen, and maybe a USB hub so there is more than one port left over.

The last thing I'd like to have in a project like this is some sort of HDMI switch that can detect if an external display is connected and automatically switch to it as well as change the mode to whatever the TV supports.

It may not be the Shield Portable 2 Nvidia was working on, but if such a project is possible, then it might be the closest we will get.