Did heatsink tape KILL my B+???

Question

I mounted a heatsink that I got with my Mod B Complete from Prestige Milano,

on my NEW ModelB+. (from Pi Hut)

The B+ worked for 3 weeks then just QUIT. Looking that the board, I see

corrosion on the pins of second big chip. I took the Prestige Milano heatsink off.

Looks like ACIDS from the doublesided tape ate the leads of the chip.

Grrr...

shabaz · Answer

On a normal RPI board there is nothing else that could cause this blemish, so it's possible that the sticky tape wasn't intended for heatsink use.

Anyway, that part isn't intended to be heat sinked by the designers of the RPI so unless you have a heatsink which has no risk of touching the edges (that's a QFN chip so higher risk than BGA) and used the correct tape specified by the heatsink manufacturer, then there could be a risk for these things to occur. I'd try and get a replacement RPI (or compensation for a replacement) from the company that sold you the heatsink+tape, if they claimed it was intended for the RPI. It's product liability - they are responsible for any damage their product causes if the product was used as intended. This assumes you used the heatsink+tape product as described in their instructions.