RGH1 jasper 16mb not booting

[Odee103]

Hi folks,

I have a problem with a jasper rgh cr2. It randomly stopped working.The debug light comes on when plugged in but it doesn`t start up at all with either power,eject or usb controller button. The psu light stays orange. I can read and write the nand, there`s no bad blocks and the cr2 is soldered to the board with nice solderspots, all double checked with the multimeter. The typical suspect mosfets seem all good... im out of ideas.
Could it be a cold spot under the cpu? I have another 2 jaspers in the xbox-graveyard since a year,no mods but same symptoms, no reaction to pressing of any buttons...
Has anyone had similar problems with jaspers and figured out where the problem lies? Some help would be very appreciated! Thank you.

Cheers,
Odee

 

[ultimate360]

Post pictures of the CR and your nand and cr points. You'd be amazed what things you can miss that keep it from powering on

 

[Odee103]

thanks ultimate I found the problem on the current one, was a short in the broken usb port. Still have the other 2 unmodded jaspers that won`t start and its not the usb port with these unfortunately

 

[kilroy23]

Well if you do a quick search on google you can find all the voltage test points. If you really want to dig into em you could grab your meter, start at the power jack and work your way from there. I think this could also be cause by SB possibly but most likely a short. I have only seen the SB issues on slim models personally.