September 14

Energy Efficient CFL fire Hazard?

I noticed something wasn’t right with this light when it failed so I opened it up.
burn2
 
Electronics totally burned up
 
burn
Inside plastic is burned.
burn7
 
 
 
burn6
 
The irony is the burn almost went though the UL label
burn5
 
inside plastic is covered with burn marks
burn4
 
The CFL it self is melted! This had to get quite hot to do that!
burn3
The other side of the electronics.

May 9

Decapsulated chips

Warning! Nitric Acid is nasty stuff to play around with. I did this so you don’t have to! Do not attempt to do this yourself or you may end up dead!
So today I wanted to try and decapsulate some chips to see how they were laid out inside.
lf1000_derp
This was my first attempt. A Leapfrog L1000 arm chip.
Not sure if I etched everything off or this is some sort of copper obfuscation layer.
lf1000_derp2
The other side looks like the standard back of a chip.
Next I attempted one of those custom glued down chips from a older leapfrog toy.
results were much better.
lfsomething
This is one really nice chip to look at :)
lfsomething3
lfsomething1
lfsomething8
lfsomething7
lfsomething4
lfsomething5
Some sort of die marking of who really made the chip. I couldn’t get a clear image of it.
This is at 500x zoom on my microscop
lfsomething6
Next up I did a old DEC scsi chip
dec
dec2
dec3
dec5
lastly a simple 8 pin eprom chip
i2ce
i2ce2
i2ce4