Xbox flash green and red no AV output :'(

Porske

Noob Account
Mar 5, 2019
1
1
Italy
Hi,
this is my first post in this forum, i have a lot of experience in Playstation 2, original xbox is totally a new world for me.
Some times ago i receive 3 Xbox from a family relative, I repaired 2 ones (and now are chipped and fully working) but the most beautiful have some problems 😢 there is no way to get video output to work.
When I switch on the Xbox it's reboot 2 times and start flashing green and red, if i try to open the DVD drive I can hear the motor spinning, the HDD led flash but nothing happened.
If I disable Xecuter chip (long press power button) the console stay on (no reboots) with green led on "normally" and if i try to open the DVD start green flashing continuously.

I make a short video with some test

I also completely unplug the chip and power on the console without HDD and DVD, but noting changed.
There are some pictures
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Someone can help me? I have dead motherboard?

Thanks!!
 

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