820-3209 Short on PP1v5_S3

[2click]

This board was working fine, it had problems with the ram, I reflowed it and it worked fine for a couple months, now it came with a short on PP1V5_S3 and nowhere to be found I removed all the ram chips and can´t seem to find anyshort... don´t know where to look now...

 

[2informaticos]

Which is the exact ohm value (not diode) for that short?

 

[2click]

0.1 ohm

 

[2informaticos]

0.1 ohm is pure short.
You should get at least 0.3-0.5 ohm, counting probes resistance; did you discount that value?

You can try injecting voltage, starting with 0.5V; no more than 2V.
You may need 20A PSU.
5A model does not help in this case...

 

[2click]

I don´t have access to a 20A PSU nothing to do in that case?

 

[2informaticos]

Nobody stop you to try with 5A PSU.
Just try, may have luck; set amp limit to max first...