K-R42 COOLING MOD
Hi guys i butchered my K-R42 android tv box last night in order to add copper shims and a heatsink with an 80mm silent fan.I had to heatgun the original heatsink off at a dangerous 250c and lever it off then with a flat head screwdriver,i then dabbed super glue in all 4 corners (small spots) on all chips and between the glue spots i added thermal paste in a heaped glob.I then pressed down onto the paste and super glue 3x 1mm depth copper laptop shims and then did the same process on the upper side of all 3 of the shims and pressed on and stuck down an asrock copper heatsink for a pc motherboard gpu.I then cut the K-R42 case lid with huge difficulty with a stanley knife heating with heatgun at 100c at times to cut easier.I accidentaly scored the front of the case by the power on button as the knife slipped during cutting.It does not matter i shall get some vinyl done for that bit,but any way in the pictures you can see that it looks crude but it works great,and also at the back there is a small bulge from the fan screw as hardly could fit it on being 80mm.But all in all it's an absolutely amazing improvement on performance to stock it glides through menus booting gta 3 takes way less time as well i noticed straight away, i shall get something going about it in a youtube channel in time but for now it's finding an app that can give me cpu temp readings as i cannot find anything suitable for this chipset yet that gives a cpu temp.I also sawed off the ring openings on the 2 corners of the heatsink and filed the cut smooth.
The cpu shim was realigned before sticking the heatsink on so it was exactly in the centre
The heatsink is on upside down but didn't care as was putting fan over it so irelevant
Here's the bulging lid due to the screw,but it's still fine regardless.
And here is the final look minus the fix for the slice on the case from the knife,but you get an idea for what has been done,i used superglue as was not waiting 6 days and paying out on some thermal tape or thermal epoxy.So far it runs great so i will keep it as it is for now.Hope you like it?Inow here that currently there is no way to access the thermal sensors to test temperature,this needs to be fixed asap if anyone can tell me how to get my temps then please let me and everyone else know as soon as you can please.
Almost forgot to mention that in order to remove the original epoxy used to glue the heatsink down,i basically used a flat head screwdriver whilst still warm and scratched at it until it came off,then i wiped it down with isopropyl (99% pure rubbing alcohol),i did this when warm but not immediately after removing the heatsink at 250c though, as you'd move the solder balls about and the chip will disconnect from the board if the temp has melted any solder balls under the chip,be vary careful with heatguns as they have to be around 1" from the surface of the heated item and moving constantly in a circular or side to side or up and down motion ,as if you direct a heatgun on a chip constantly in one none moving position then you risk ecessively heating the chip to a point of breaking or melting it internaly.I never use flux any more either as it tends to pop/crackle when heated to a point which explodes the solder balls and either blows them up totaly or decreases their size.If ever doing anything to clean solder use isopropyl to pour on not flux and wait until dried by air before you continue,for this project i did not pour isopropyl under the chips though.
I have had the K-R42 skinned in kevlar i'd like to thank complete console repair for making a remarkable job .The project is now complete,all i will have to wait for now is to get temperature readings to take some results.
I have recently tested the K-R42 with antutu benchmarek and the score is quite impressive,it got 17128 it's just below the samsung galaxy s3 which scored 18000.
The cpu shim was realigned before sticking the heatsink on so it was exactly in the centre
The heatsink is on upside down but didn't care as was putting fan over it so irelevant
Here's the bulging lid due to the screw,but it's still fine regardless.
And here is the final look minus the fix for the slice on the case from the knife,but you get an idea for what has been done,i used superglue as was not waiting 6 days and paying out on some thermal tape or thermal epoxy.So far it runs great so i will keep it as it is for now.Hope you like it?Inow here that currently there is no way to access the thermal sensors to test temperature,this needs to be fixed asap if anyone can tell me how to get my temps then please let me and everyone else know as soon as you can please.
Almost forgot to mention that in order to remove the original epoxy used to glue the heatsink down,i basically used a flat head screwdriver whilst still warm and scratched at it until it came off,then i wiped it down with isopropyl (99% pure rubbing alcohol),i did this when warm but not immediately after removing the heatsink at 250c though, as you'd move the solder balls about and the chip will disconnect from the board if the temp has melted any solder balls under the chip,be vary careful with heatguns as they have to be around 1" from the surface of the heated item and moving constantly in a circular or side to side or up and down motion ,as if you direct a heatgun on a chip constantly in one none moving position then you risk ecessively heating the chip to a point of breaking or melting it internaly.I never use flux any more either as it tends to pop/crackle when heated to a point which explodes the solder balls and either blows them up totaly or decreases their size.If ever doing anything to clean solder use isopropyl to pour on not flux and wait until dried by air before you continue,for this project i did not pour isopropyl under the chips though.
I have had the K-R42 skinned in kevlar i'd like to thank complete console repair for making a remarkable job .The project is now complete,all i will have to wait for now is to get temperature readings to take some results.
I have recently tested the K-R42 with antutu benchmarek and the score is quite impressive,it got 17128 it's just below the samsung galaxy s3 which scored 18000.
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