Overheating Mecool M8s Pro L and Pro + (and others ?) - Options ???

[Kazar]

Hi, i have doubt, which passive heatsink is better for my s912 device?
down there are 2 chips, upper side only cpu is covered by heatsink 30x30mm. should i buy a bigger heatsink that covers also memory chip or is better to replace cpu heatsink+ add small dissipators to memory chips?

[LilSnoop40]

hello, today i went to use my box and i have the blue light but no video. it was working last night with no problems, i am running CoreElec... any ideas how i can get the video back. i tried a different tv/hdmi and power plug from my other mecool box but still just black screen and power is one. fan spinning and blue light on?

any help would be great

[Spastro]

I'm not the best with welding. Would drilling holes in the lid be enough 

[Jancales]

One to add to your collection.

M8S Pro LB.

50 x 35 x 10 heat sink.

32mm hole in the bottom with 80x80x10 fan underneath in suction mode . 5 V fan running at ~3.5V

After 16 minutes of stress cpu at 57 degree. Ambient temperature 31 degree

[Tm4ster]

The Pro W may not need cooling as much as the L or the +

Probably all mods can be applied to the W in the same ways.
Check if you need cooling for your usage and ambient situation using CPU Temperature app.

Ambient temp 21C, idle temp 51C, IPTV FHD 69C, kodi 720p 80C degrees.

After a few minutes in IPTV FHD the image starts to get green and black stripes and the box crashes :/

[P.X]

Any moods for the m8s pro w?

The Pro W may not need cooling as much as the L or the +

Probably all mods can be applied to the W in the same ways.
Check if you need cooling for your usage and ambient situation using CPU Temperature app.

[Tm4ster]

Any moods for the m8s pro w?

[Jancales]

trebor =P.X;n766986]

Hi,
Very interesting ... Never used to be a metal plate, just like the pro+ before.

I think something may have changed spacewise above board as well. I always used little rubber pads and spaced the lid to have a small gap so can't be sure, but I am pretty sure you could screw the lid on properly if you wanted too before.
???
PiX if you can?[/QUOTE]

I did make a hole in thee bas already to mount my fan underneath, and fitted a 50 x 35 x 10 heat sink which allowed me to close the lid

By the way @ trebor I don't receive notifications anymore from replies to subscribed posts.

[P.X]

P.X Just received the fist lot of Pro LB, noticed it has a steel plate mounted under the PCB. Don't know this has always been as never had Pro L.

Wanted to fit 40x40x11 heat sink but noticed the lid can't be properly closed then.

Is this normal or is this something that has changed?

Hi,
Very interesting ... Never used to be a metal plate, just like the pro+ before.

I think something may have changed spacewise above board as well. I always used little rubber pads and spaced the lid to have a small gap so can't be sure, but I am pretty sure you could screw the lid on properly if you wanted too before.
???
PiX if you can?

[Jancales]

P.X Just received the fist lot of Pro LB, noticed it has a steel plate mounted under the PCB. Don't know this has always been as never had Pro L.

Wanted to fit 40x40x11 heat sink but noticed the lid can't be properly closed then.

Is this normal or is this something that has changed?

[P.X]

Thanks.
Strange the newer SOC are rough !
That would not seem usual ...

[Jancales]

Thanks for the info.
Photos ?

Not found any switched 3.3V

Think it would be very difficult to distinguish the difference from a photo, but since you have replaced quite a few heat sinks yourself, you will know that the processor surface is always very smooth.

With this lot not anymore, and it is also very difficult to clean the thermal paste from the processor for that reason.

If you mean the heat sink, this is the one they use now

[P.X]

Thanks for the info.
Photos ?

Not found any switched 3.3V

[Jancales]

I have replaced quite few heat sinks on the M8S pro+ S905X box since this thread emerged.

The last lot of boxes I received had a larger heat sink than the previous ones, more rigid aluminium as well, but yet not good enough.

I notice that the surface of the processor on this last lot is much rougher. Could this mean that the Chinese are now using knock off Amlogic processors?

On another note, I use 5V fan, and find lots of 3.5V sources on the pcb, but they all remain active when box switched off.

Is anyone aware of a 3.5V source that switches of with the box?

[P.X]

Hi all,

I don't think it was mentioned before, but regarding having quiet fan - i took option to install 12V fan and connect it to switched 5V on USB port. For example, i used this fan: https://www.chipoteka.hr/artikl/141462/ventilator-12v-40x10-mm-sunon-ee40101s11000u999-2440001952 , and without any resistor.
Fan has operating voltage starging from 4.5V, so on 5V it will spin slowely and very quietly, which is sufficient for cooling even with stock cooler on the processor.

Before fan, i had idle temperatur of ~51C (ambient 23C), and when watching 2160p it peaked at ~69C (this is with holes on the top side of the case). With fan, idle temp is 29C and watching 2160p around 35C.

Fan is very quiet, you can hear it faintly only from 15cm away.


br,k.

Hi,
Thanks for info. Finding a 12V that spins up at 5V is a good solution. Not all work, so always good to get info on any that do.
Good result.
Thanks