How to control my plate amp

So I have an old 5.1 plate amplifier from back in the day. It's a genesis media labs g506 (white van scam). It actually isn't a terrible amp so I decided that I'm just going to buy a cheap dts decoder and try to use it. The only issue I'm having is that I no longer have the lcd board. Everything else is there besides that. What can I do in this kind of situation?
 
I no longer have the lcd board
It´s not only the LCD but the full receiver - preamp - controls - etc.

Maybe you still have functional power supply and power amps, but you will need to find their inputs and kludge/add at least a set of input jacks for each of them.

Maybe you can´t even turn it ON without the missing front end.
 
I'm newer when it comes to messing with amps but couldn't there be a way to make something to control it?
I'll have to take pics when I get off work tonight to show what I'm working with. This used to be a fully functional setup until I let my younger brother in law mess with it
 
This is the connector that went to the display. It also had an ir sensor on it
 

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