PC Engine GT External Controller

[MasterofBiscuits]

This is the PCE with the 3.5" screen. I did some poking around today and found that one of the pins that goes from the small IC on the controller board to the connector changes from 0.1v when the screen is active to 4.65v when the timeout kicks in. I have a feeling that is the timeout signal but not sure if that line has any other functions. Only one way to find out...

What would be the best way of forcing that line to always show 0.1v, preferably without lifting the pin?

Edit: OK well curiosity got the better of me and I lifted the pin and everything still works and the screen no longer dims - great success!

Edit #2: Com link port no longer works, but I can live without that.

This is the pin:

Hello everybody. I intend to perform this mod on my GT.

I want to be able to connect a connector to use a controller or even a multitap but I'm having doubts.
Please, what pin should I lift to not turn off the screen when using the controller?

Is there currently any other alternative to this action of lifting the pin?
I saw somewhere else, someone who put a switch and then this answer but I don't know which pin...
"You don't need to use a switch, you can just bridge 2 pins on the controller connector board which will make the screen saver function stay off permanently. I can't remember the pin you need to ground off the top of my head, but it shouldn't be difficult to find either by probing with a multimeter or googling it. A multitap won't do anything AFAIK."

Thanks a lot for the help 

That picture answers your question - it's the 5th pin from the left. Also confirmed in tawys thread: https://www.pcenginefans.com/forum/index.php?topic=23590.msg524226#msg524226

Wire that to GND and you are good to go.

[hard_gb]

This is the pin:

That picture answers your question - it's the 5th pin from the left. Also confirmed in tawys thread: https://www.pcenginefans.com/forum/index.php?topic=23590.msg524226#msg524226

Wire that to GND and you are good to go.

From the photo I was in doubt, because in the image there is a red circle, identifying the point, but this does not go to the 5º pin.

I should solder on the blue dot (it's connected to the 5º pin) or I should solder the red dot (it's connected to the 6º pin).
I also looked at the other link you shared but I didn't find that information. At least I didn't find it. 

Anyway, very grateful for the answer.