Help! I think I burnt out my pi!

[itsanact]

I got a Pi 2 Model B a few days ago and have been setting it up as an OSMC media center and data server. I was trying to get an old powered usb hub to work and was trying different power supplies, and after trying 2.5 amp one the Pi turned off, and hasn't worked since! The power and activity lights are both fully on, but the screen isn't displaying anything, nor can I SSH into it.

I tried reformatting the sd card, and buying a new card and neither work, but they do work on my old model B.

Can anyone help?

edit: I have checked all the stickies

[klricks]

Were all the power supplies you tried rated 5V DC?
Does the large chip or any other parts get really hot?
If so then the RPi is burnt beyond repair.

[itsanact]

the power supply to the usb hub was 12v dc.

I didn't leave it in long enough to get hot and havent tried it again so I don't know.

[klricks]

the power supply to the usb hub was 12v dc.

I didn't leave it in long enough to get hot and havent tried it again so I don't know.

If the 12V supply is the one that came with the HUB then it should have been OK.
Read the label on the HUB. The ratings of voltage and polarity must match. Current must be at least = or can be >, If not then lesson learned.
You cannot willy nilly try anything that has the same type of connector.
That is one reason the RPF went with the micro USB - There is very little chance that the supply voltage is anything but the required 5V.

When powered normally from micro USB does the large chip get hot?

BTW why do you need a HUB? Ever since the B+ model, there is little need for a HUB for most applications.

[itsanact]

The hub is one I had lying around, if it had a psu it's long gone, and it didn't have a label either. I need a hub because my hdd (which won't work now either) doesn't have its own power cable and can't be powered from the pi

[klricks]

The hub is one I had lying around, if it had a psu it's long gone, and it didn't have a label either. I need a hub because my hdd (which won't work now either) doesn't have its own power cable and can't be powered from the pi

Probably the HUB directly passed the 12V to the RPi and drive over the USB power line. Hopefully only the drive USB interface was damaged and not the drive itself????? You could try removing the drive from the enclosure and putting it in another OR get a cheap USB to SATA adapter from Ebay and try that.

The RPi B+ and 2B can handle most 2.5" drives without a HUB or external power. IF you adjust the /boot/config.txt file to allow maximum current (1.2A) AND use a good 5V 2.0A+ power supply on the RPi.

[DougieLawson]

the power supply to the usb hub was 12v dc.

I didn't leave it in long enough to get hot and havent tried it again so I don't know.

You don't need to leave it on. Less than a microsecond after you connect 12V to 5V equipment you have a pile of junk that is going in the recycling.

Toss the Pi, the USB hub and anything else connected to that hub, they're ALL ruined.