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Discussion Starter · #1 ·
I want to take my ePad apart. It gets hot and it seems like a lot of these do. So i want to see if it is feasible to maybe make some air slots, or add some kind of heat spreader to help this problem. It looks like you open it like a phone with a guitar pick and pry around the edges to separate the face from the body. So before i crack this bad boy open and hope that i don't brake it, has anyone opened one and if so have any tips or experiences?
 

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Discussion Starter · #2 ·
ok got it apart. you carefully seperate the sticker like face up at each corner to expose a small screw(be carefull to only pull only as far as to expose the screw and to use a good screwdriver so you dont strip it =p) and once all 4 screws are out you can just go around the edge to release the backing from the screen the screen and board + batteries are all one piece. the processor says wm8505 and there are 2 2400mah 3.7v batteries zt 634590man it said it had 3000mah that liar lol
 

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I did a sloppy job on the holes.... so I am going to cut it out and screw a pc fan grill with a cool design on the back, unless i find something better. I recommend doing careful measurements, and using the proper tools, both of which I did not do.It feels like it helps but I dont have another one to compare it to and i dident take any temp readings before. today after sitting idle face down for about an hour with ~90? ambient temp with an infrared temp gun at the back, the processor side was about 113-115?F, and the other side was 98-100?. that was with just holes made. It still gets hot if you set it down and cover the hole. I dident think to cover the holes to get a temp of how hot it would get before the holes were made. I used it heavily for about an hour after installing the heat sink and it was warm, but never got hot. temp gun is a work so ill do that tomorrow.and sorry for the low res photos they were taken with a Chinese mobile from ali...lol
 

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Discussion Starter · #7 ·
I did several tests today all at standby with wifi on. Over 3 hours taking surface temp readings (with an infrared temp gun) of the screen and back on both sides, in different positions and with the vent covered and with it open. The heat sink is still installed in these tests because I did not want to remove it. according to what i could find real quick the operating temp for the epad is 32?-104?F and the storage temp is -4?-140?F . This test was done in fairly extreme ambient temperatures most of you would probably be in the comfort of air conditioning, but you never know.... starting temp 92?Fvent open position- face(screen) down on cotton cloth1st reading 5 min after boot, in 5 min intervalsprocessor side =right R camera side= left LR-----L113? 100?116? 100?110? 97?112? 94?2nd face down vent covered with tape 1st reading 5 min after covering ventR-----L123? 97?125? 97?125? 97?126? 98?3rd face UP vent covered with tape 1st reading 5 min after flipping over.R-----L126? 97?122? 100?(116?) (101) <------- (xxx)=screen temp123? 100?(118?) (102?)130? 100?(115?) (102?)4th face UP vent uncovered 1st reading 5 min after uncovering *ambient temp is now 95?F (to simulate having the epad on screen up on a couch or bed vent covered by the fabric only)R-----L118? 101?(113?) (103?)116? 101?(114?) (103?)118? 102?(115?) (105?)119? 102?(115?) (105?)5th again the first test but now the epad is fully warmed up and has been on for over an hour face down vent covered in 10min intervals 1st reading 5 min after coveringR-----L131? 102?132? 104?134? 104?6th face down vent open 1st reading 5 min after uncovering the ventR-----L122? 103?120? 103?123? 103?(120?) (110?)Having a vent in the back can lower the temp of the surface of the epad by ~10?F if air flow is not restricted in any way. ~5? lower if restricted because it is screen up on a cloth of some sort.I found this all interesting hope you did as wellI am working on total "ToughPad" case mod will post back when it is complete.
 

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[quote name='ostara;14802]I did several tests today all at standby with wifi on. Over 3 hours taking surface temp readings (with an infrared temp gun) of the screen and back on both sides' date=' in different positions and with the vent covered and with it open. The heat sink is still installed in these tests because I did not want to remove it. according to what i could find real quick the operating temp for the epad is 32?-104?F and the storage temp is -4?-140?F . This test was done in fairly extreme ambient temperatures most of you would probably be in the comfort of air conditioning, but you never know.... starting temp 92?Fvent open position- face(screen) down on cotton cloth1st reading 5 min after boot, in 5 min intervalsprocessor side =right R camera side= left LR-----L113? 100?116? 100?110? 97?112? 94?2nd face down vent covered with tape 1st reading 5 min after covering ventR-----L123? 97?125? 97?125? 97?126? 98?3rd face UP vent covered with tape 1st reading 5 min after flipping over.R-----L126? 97?122? 100?(116?) (101) <------- (xxx)=screen temp123? 100?(118?) (102?)130? 100?(115?) (102?)4th face UP vent uncovered 1st reading 5 min after uncovering *ambient temp is now 95?F (to simulate having the epad on screen up on a couch or bed vent covered by the fabric only)R-----L118? 101?(113?) (103?)116? 101?(114?) (103?)118? 102?(115?) (105?)119? 102?(115?) (105?)5th again the first test but now the epad is fully warmed up and has been on for over an hour face down vent covered in 10min intervals 1st reading 5 min after coveringR-----L131? 102?132? 104?134? 104?6th face down vent open 1st reading 5 min after uncovering the ventR-----L122? 103?120? 103?123? 103?(120?) (110?)Having a vent in the back can lower the temp of the surface of the epad by ~10?F if air flow is not restricted in any way. ~5? lower if restricted because it is screen up on a cloth of some sort.I found this all interesting hope you did as wellI am working on total "ToughPad" case mod will post back when it is complete.[/QUOTE'] maybe you should put heatsink on top of processor that will do much better hehehe...
 

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[quote name='ostara;14802]I did several tests today all at standby with wifi on. Over 3 hours taking surface temp readings (with an infrared temp gun) of the screen and back on both sides' date=' in different positions and with the vent covered and with it open. The heat sink is still installed in these tests because I did not want to remove it. according to what i could find real quick the operating temp for the epad is 32?-104?F and the storage temp is -4?-140?F . This test was done in fairly extreme ambient temperatures most of you would probably be in the comfort of air conditioning, but you never know.... starting temp 92?Fvent open position- face(screen) down on cotton cloth1st reading 5 min after boot, in 5 min intervalsprocessor side =right R camera side= left LR-----L113? 100?116? 100?110? 97?112? 94?2nd face down vent covered with tape 1st reading 5 min after covering ventR-----L123? 97?125? 97?125? 97?126? 98?3rd face UP vent covered with tape 1st reading 5 min after flipping over.R-----L126? 97?122? 100?(116?) (101) <------- (xxx)=screen temp123? 100?(118?) (102?)130? 100?(115?) (102?)4th face UP vent uncovered 1st reading 5 min after uncovering *ambient temp is now 95?F (to simulate having the epad on screen up on a couch or bed vent covered by the fabric only)R-----L118? 101?(113?) (103?)116? 101?(114?) (103?)118? 102?(115?) (105?)119? 102?(115?) (105?)5th again the first test but now the epad is fully warmed up and has been on for over an hour face down vent covered in 10min intervals 1st reading 5 min after coveringR-----L131? 102?132? 104?134? 104?6th face down vent open 1st reading 5 min after uncovering the ventR-----L122? 103?120? 103?123? 103?(120?) (110?)Having a vent in the back can lower the temp of the surface of the epad by ~10?F if air flow is not restricted in any way. ~5? lower if restricted because it is screen up on a cloth of some sort.I found this all interesting hope you did as wellI am working on total "ToughPad" case mod will post back when it is complete.[/QUOTE'] maybe you should put heatsink on top of processor that will do much better hehehe...
 

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Discussion Starter · #10 ·
It is on top of the processor!!!. no i put the heatsink on some random chip on the board *sarcasm* , I was comparing temps left to right to get an comparison of what the other side of the pad was at and since the batteries are on the other side i figured it would be useful. you did not even read the post or look at my crappy photos.
 
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