I’ve reported earlier that my DS411Slim started to have critical overheating problems and that I did replace the 3 years old system fan without success.

In this second fix attempt I purchased a thermal adhesive from Akasa and using a filer I adapted a heat sink that I had hanging around so that it would fit with the bolts that keep the heat spreader attached to the electronic board.

High hopes as before, but the file compression test failed again. The interface is working and the heat sink gets very hot.
Unfortunately it seems that the more heat I remove from the CPU the more gets generated.
Indexing videos generated the very same behavior.

I’m running out of ideas and I’m starting to challenge the idea of getting a DS414Slim to make a fail-resistant setup.
I see no point in investing in another Synology as the first one is constantly failing.
It is too bad because the management software is very nice and powerful.

Anyone that has an idea on what to try next is welcome to comment to this post.

Below are a few snapshot of the hack.

Factory fit heat spreader with connecting bolts that require heat sink adaptation.

1st corner of the heat sink filed

2nd corner filed

Interference check with the filed heat sink before bonding

Side view of the bonded heat sink

Side view with the 3 drives in place before the insertion of the empty disk frame.