Xbox 360 slim won't boot - green dot only, no green ring, no video, no audio

[ngth82]

HI guys -
I bought a Xbox 360 slim (Corona model) from the local shop for cheap. When i got home, i plugged in the power cable & HDMI and fired up the unit. There is no video, or audio from the HDMI connection. I also tried this with the A/V video connection (video, audio left/right). No luck. The console has been opened by the previous owner. I have no idea what they did to it, but i can't complain too much since it was dirt cheap for something to play with - $5!

Instead of directly jumping to any need for a CPU/GPU reflow, I'd like to find out if a blank flash would cause the same symptoms of only seeing a green dot (no red dot, no green rings when you start up). I have a NAND-X from when i was working on the Phat consoles and plan to hook it up to the slim tomorrow to dump the existing nand, but I'd like to get an idea if the NAND-X dump process is worth executing, or if i should just directly reflow?

Thank you in advance!

 

[GeekHeat]

Possibly need a reflow. But first thing I wud do is reset display settings.
google on how to do this.

 

[ngth82]

Good morning GeekHeat -

Yes, i've tried to reset the display settings by turning the console off, then on. I press and held the Y button while pulling the right trigger button. There was no visual indication that it worked. I tried the AV and HDMI connections with a known good cable and inputs.

I'll try a reflow today.

Thank you

 

[ngth82]

Hi GeekHeat - i tried reflowing the CPU, but no luck.

Is there a remote possibility that the flash got corrupted during an update? (I would highly doubt it... but just asking). If that is the case, can one theoretically make a "new" flash image and write it to the console?

 

[nofeloniesyet]

Hi GeekHeat - i tried reflowing the CPU, but no luck.

Is there a remote possibility that the flash got corrupted during an update? (I would highly doubt it... but just asking). If that is the case, can one theoretically make a "new" flash image and write it to the console?

it would 0022 on corrupt update,ive seen it happen and had to rgh it to get the info to build a new nand. so im pretty sure thats not the issue here.