EDM010 - Repairable or total loss??

[deservd_]

Hello together,
im a total beginner but i found following problems on my EDM010… is the APU dead or does it seems like there Could be another repairable defect on this board?
Thanks for your Input!

 

[jkyoho]

Assuming you notes them in diode reading, and even with a working board, the most reading near APU and Vram are closed to 0.015~0.020V(10mV~20mV diode), so that doesnt really mean anything dead.
FYI, for EDM-010 board, the F7002 area is NOT generating 1.8v standby but 3.3v standby.

 

[deservd_]

Many thanks for your feedback!
I did all the measurements while my lab power supply was connected to the board at 12V and 0.5A. I only carried out the measurements below the Ethernet connection in diode mode, all others in DC mode. I am aware that the F7002 area should not generate 1.8V, but actually 3.3V. I just don't know why this might be the case in this instance.

Regarding my pictures: I have only drawn in all the deviations from the standard, hence the 1.8V at the F7002 point.

Do you have any ideas about what I could do next?

One other thing I have noticed is that the console only just reaches 300mA in the first stage of the standby boot sequence and then drops to a value of 3-5mA in the second stage and holds this value permanently. (As far as I know, 321mA should be normal in the first stage and 7-10mA in the second stage).

And do you have any idea what could be the reason why I have 0V on the 1.35V rail? Do you think it's a short circuit in a capacitor? And if so, how do I find out which one? Unfortunately, I don't have a thermal imaging camera ...

 

[jkyoho]

Do you mean You actually measured 1.8v on that f7002 area where it supposed to be 3.3v?
If yes, I guess you might have a short on the 3.3v standby line so it pulls down 3,3v to 1.8v or lower. Measure the resistance on the it.

 

[deservd_]

Do you mean You actually measured 1.8v on that f7002 area where it supposed to be 3.3v?
If yes, I guess you might have a short on the 3.3v standby line so it pulls down 3,3v to 1.8v or lower. Measure the resistance on the it.

The resistance on the it? What do you mean with „it“?

 

[jkyoho]

The resistance to ground on this place where you said you measured 1.8v instead of 3.3v

 

[deservd_]

The resistance to ground on this place where you said you measured 1.8v instead of 3.3v

The resistance to ground is about 56.3 kOhm at this area, could this be right?

 

[gecko702]

The resistance to ground is about 56.3 kOhm at this area, could this be right?

are you getting any UART codes?