If this is your first visit, be sure to
check out the FAQ by clicking the
link above. You may have to register
before you can post: click the register link above to proceed. To start viewing messages,
select the forum that you want to visit from the selection below.
Interesting!
There is absolutely no way one could clean all that black tar like substance to reveal the underlying components.
Wrong!
There is method!
Only need patience and much spare time.
Freeze it and than heat it fast.
Than scratch and peel bit by bit.
Than again deep freeze and fast heat....and again and again...until done!
Also bee ready to destroy some of components during that process...
The hell with components! They are replaceable!
Hello forum,
Thanks Ivconic to remember at the forum the technic to put away all this **** black resin.....just patience and a little time and you can clean very well this pcboard ,,,i have used with great success this method in many time!!! because i hate to not see the board for trace it...
Have a good time,
alexis.
This looks interesting ...why dont you get it x-rayed and put the images here ,we should be able to work it out from there.
X-Ray images can't resolve the markings on die surfaces.
I don't think there is a non-destructive way to identify the components except for maybe some advanced high-resolution penetrating 3D imaging technique that is out of reach.
I used to think this is impossible, but then I saw it done. It's more of a question of patience than anything. I have not tried it, but this stuff is reported to work with some resins softening them considerably;
Outside of that, Ivconic is right. A heat gun is your friend. And maybe a diamond tipped tip dremmel tool. Maybe some dry ice. I'd stay away from liquid nitrogen as it could crumble the whole thing (as well as fingers and toes!).
If there are no chip numbers, a rough schematic can still decode function. After that there have been others who take a look at the die under a microscope.
Safemakers never guarantee an unbreakable safe, only a "tool rating" of how long it is "tool resistance" (usually in minutes). Such is the same as potted electronics. It's just a question of time and resources.
Comment