Is my Pi A+ dead?

[jmn]

I just got a new Raspberry Pi A+ (yea), and tried to fire it up. Based on my experience with a B+, I expected a light to come on, followed by the boot process. But the light doesn't come on. The power adapter works find with my B+, so I don't think that is the problem. Am I wrong to expect the pwr light to come on?

[jmn]

Another observation: with the power on, part of the board that is close to where the power plugs in gets pretty warm.

[adafruit_support_mike]

What voltage do you see on the 5v GPIO pin?

[jmn]

I am seeing about 1/10 of a volt.

[adafruit_support_mike]

That's very dead.. when did you order it?

[jmn]

Nov 15th.

[jmn]

What happens from here?

[adafruit_support_mike]

Send a note to [email protected] with a link to this thread and the folks there will get you a new A+.

Fair warning: we haven't really isolated a hardware defect on it, so if the replacement fails we'll have to assume they're being killed by something in the operating environment.

[jmn]

A+ was out of stock for a while, so it took me a while to re-order and get a new one. I did do that, and got the new one. And I have the same problem. I tried many power adapters, and verified that they all work with a rasberry pi b+ that I have from a previous project. Are A+s more particular about their power? could I have gotten 2 bad ones? that seems unlikely doesn't it? Both of my A+s don't have more than 0.1 volts on the GPIO pins. I went searching for troubleshooting tips, but for me I don't even get the red power light to turn on so I don't get very far. Any thoughts?

[adafruit_support_mike]

The rate of production errors in RasPis that make it into the wild is about 0.1%, so the chance of getting two duds in a row from different production lots is phenomenally low.

What are you using as a GND refererence when measuring the voltage on the 5v pin?

[jmn]

I was comparing pins 2 and 39. I also tried comparing TP1 and TP2, with the same results.

[adafruit_support_mike]

Those pins read 5v on the one I just checked..

Let's try one more time, but I want to take a personal look at the two that aren't working.

Send another note to [email protected] with a link to this thread. The folks there will arrange return shipping for the two you have now, and get another on its way to you.

[adafruit2]

jmn, can you post a photo of your power regulator? what was the A+ sitting on when you powered them up? did you place them on the silver bag that they came in?

[jmn]

Here is a pic of the first adapter I tried. I ended up trying a bunch, but this is the one I got from you guys, so I went with that. I had the same results with other adapters, including one that runs a B+ pi. The work surface is also pictured, the formica counter top. I didn't put it on the silver bag. I thought it was probably conductive and therefore a bad idea.

[jmn]

I never heard back. Where are we on this subject?

thanks
John