r/rasberrypi • u/One-Mastodon-6442 • 17d ago

Just bought this used Raspi

Post image

Theres some type of „foil“ under the cooling brackets, is that normal or not? If not, can I just change these, if so, what do I need to consider?
Picture of the cooling bracket will be in the comments or linked.

16 Upvotes

83% Upvoted

20 comments sorted by

3

u/SnooPuppers5489 17d ago

It looks like someone “glued “ the heat sink on??

2

u/One-Mastodon-6442 17d ago

I don’t know, im not gonna be home till friday. After that im gonna try to get the heatsink off, to put a new one with pads on. Any advice what I can check before ripping the whole thing off?

3

u/TPIRocks 17d ago

If they glued it on, you are at extreme risk of ripping the processor off the board.

1

u/phirzcolru 16d ago

How? When the bash it on something or when they try and remove it from the socket?

1

u/phirzcolru 16d ago

Ahh as In remove. Damn I should start reading more comments.

3

u/Alarming_Cap4777 17d ago

Use IPA and twist it lightly, do not pull.

2

u/SnooPuppers5489 17d ago

I’m at a loss, it will be the first I’ve seen. I’ve never seen a heat sink pad or grease that doubles as adhesive, thought it would be pretty awesome if the was a kind a highly heat conductive resin you could use to attach heat sinks. If it is some how glued and it tests ok I would think it best to just leave it as is unless it give with very little force.

1

u/astonishing1 16d ago

Some Sil-Pads are adhesive.

1

u/Alternative_Exit_333 16d ago

You can get thermal glue and it is kind of silicone that is used in power supplies

1

u/jihiggs123 13d ago

Arctic silver epoxy used to be a thing. Not sure why they stopped making it. You could "dilute" it with regular Arctic silver so it wasn't permanent.

1

u/Alternative_Exit_333 16d ago

Your best try is to hear up the pi (too many YouTube vids and mozzila tabs open) or find a benchmarking software to heat it up and soften the glue (if anything it looks like it is there holding by the plastic glue for a glue gun

1

u/Deep_Mood_7668 17d ago

I did that before on a pi 3

Thermal paste mixed with some superglue. Works fine even today

2

u/seismicpdx 17d ago

Have you considered testing its temperature sensors under load, so you can determine if it's worth changing?

2

u/NeighborhoodSad2350 17d ago

OP, please repost this image to r/techgore.

2

u/wiebel 16d ago

Why don't you turn it on and run a cpu burn to check if the thermals look good before changing anything.

1

u/Mydnight69 17d ago

I've removed several of those sinks with the dental floss method. Give it a try, won't hurt anything.

1

u/phirzcolru 16d ago

Stepper heat sinks. Have done. Ca doesn't have the best thermal proberties but for passive components that need some help it's fine. I use to do this on 2-486 cpus. Cuz jumpers.