How to remove compound from a chip?

Thread Starter

basil_555

Joined Oct 20, 2021
15
I tried isopropyl, acetone, but nothing helps. I didn't use hot air much, since the compound is thermal resistant. Any ideas? Thanks!
20211103_180845.jpg
 

Externet

Joined Nov 29, 2005
1,874
The likely epoxic white compound will take sophisticated chemicals to dissolve, with partial success to remove the heat pipes. The IC itself is likely a ball grid soldered to the board with need of even more sophisticated desoldering equipment and training to do it heating both the board and the IC.
And more likely, to be a hundred times more expensive task to remove than replacing the entire assembly.
 

Reloadron

Joined Jan 15, 2015
6,684
The only way to remove it will destroy the chip and any information under the coating. Had the people who put the coating there wanted you to know what was under it they would have told you. :)

Ron
 
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