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Mettauk
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Overheating B+ board

Mon Jul 21, 2014 8:37 am

I have a new B+ which seems to be overheting in that the corner is to hot to touch! I got slightly singged just picking it up!

I won't boot up either!
:cry:
Anyone else?
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RaTTuS
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Re: Overheating B+ board

Mon Jul 21, 2014 8:42 am

which corner,
what have you plugged into it
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Mettauk
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Re: Overheating B+ board

Mon Jul 21, 2014 8:43 pm

Its the corner where the power plugs in. Think itss a poly fuze? Too hot to hold anyway. 2.1a USB power supply, same as for other B Pi board with no problems.

1 8gb USB 2 pen drive, 1 WiFi dongle, 1 32gb sd card with latest Noobs updated raspbian (as at 19072014). Oh and a Pi Noir camera!

Red and yellow lights come on and off for few seconds then all out and very hot. Unplug and replug and it boots for a while then just dies.
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Jim JKla
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Re: Overheating B+ board

Mon Jul 21, 2014 9:05 pm

It sounds like you may have one of those rare things a duff RPi contact your supplier to register for a return if it turns out it's not broken just cancel the return. ;)
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Re: Overheating B+ board

Mon Jul 21, 2014 9:07 pm

What happens if you power up the Pi with nothing plugged in? what about with just the SD card?

Having said that it does seem like the most likely explanation is a faulty pi.

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Mettauk
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Re: Overheating B+ board

Mon Jul 21, 2014 11:32 pm

OK removed everything and it booted OK, as I picked it up it burned my finger off (slight exaggeration) then died. I noticed that as I moved it the lights would come on, then go off, so there is clearly a loose internal connection.

The polyfuse? is what seems to get very very hot, see picture..

It's going back to RS for a replacement so lets see how long that takes????

https://drive.google.com/file/d/0B0yfsE ... sp=sharing
Last edited by Mettauk on Tue Jul 22, 2014 3:46 pm, edited 1 time in total.
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Jim JKla
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Re: Overheating B+ board

Tue Jul 22, 2014 7:01 am

They are normally pretty quick there used to be delays in the early days when supply for demand was almost just in time production but now that there are some bigger volume retailers taking batch orders this results in a few more units sitting at production to fill replacements.

Manufacturers are quite keen to get defective product back (provided it's not too many) as this highlights possible production or testing errors. ;)
Noob is not derogatory the noob is just the lower end of the noob--geek spectrum being a noob is just your first step towards being an uber-geek ;)

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liz
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Re: Overheating B+ board

Tue Jul 22, 2014 10:27 am

Indeed: the failure rate is well below 0.1%, and it's very important for us to be able to test boards which genuinely do fail in the field so we can make changes in the factory if necessary.
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Mettauk
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Re: Overheating B+ board

Wed Jul 23, 2014 9:47 am

Super efficient RS delivered a replacement B+ this morning!

Up and working without getting overheated!

Liz Upton, If you want one of the 0.1% dysfunctional boards please DM me.
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