Laptop Overheats. Fans OK, Not Clogged with dust. Overheating and Shutting Down.
ฝัง
- เผยแพร่เมื่อ 27 ส.ค. 2024
- LER #148
Here we have a laptop that overheats after about 20 mins and then shuts down without warning. A previous technician cleaned all the dust and dirt out of the fan and heat sink radiator but could not repair it.
So can we do any better? Let's see...
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Thank you
Richard
Really like this video and your - no heat flow - demonstration with the 2 temperature sensors. Always thought they were just solid copper strips conducting the heat away from the microprocessor. First time I learned they are heat pipes with an inner evaporating fluid that conducts the heat away.
Hey Richard, yeah thats toast, new heatsink required, I think they have some sort of gas inside which helps the heat move to the little rad, something like that.
Hi Gordon, Yeah I got to that after 30 mins LoL. I thought I would make it more widely known on TH-cam as I searched and there is not much mention of it. The thermocouple demonstration was quite dramatic I think :D
@@LearnElectronicsRepair yes you are right it is because the gas in the heatsink can not conduct the heat a bent or damaged heatsink is a no go, you should never use a damaged heatsink it nefast for conducting heat.
I worked in IT for 25 years and thats all new on me. Good find.
Inside that pipe is some sort of refrigerant liquid, which helps for cooling. The corrosion is that liquid mixed with dust. You need to change the cooling system and it will fix your problem. That pipe is broken due to massive bent/hit…
It’s also possible that cpu might need replacement because of the overheat. I could go lower on it’s internal resistance and will overheat even with a new cooling system….
i also encounter random shutdown cases sometimes, it can be various things not just pipeline it can be shorted mosfet besides shorted 5v power rail, faulty Super IO or faulty southbridge, chipset issues....etc.. sometimes it opens and shutsdown after 3 seconds or heating up and then shutdown..
Heya, oke oke so it is cooland in the copper pipe as a neewbee I wouldn't have think off that thanks for showing learned a lot again
Its a damaged heat pipe there is gas in it to transfer the heat it has possible leaked so the heatsink is no longer working and need to be replaced
Yep Robbi You are right. The two thermocouples demonstrated it perfectly. Not so much mention of this issue on YT so I thought I would highlight it :D A lot of people (and me initially) probably just think it is just a lump of metal.
@@LearnElectronicsRepair yes i had the same issue with a toshiba which had a mainboard fault, i fixed it and it worked but was overheating and i was going mad because i didnt know why, the laptop came in a pile of crap so it must have damaged the pipe. so i installed another heatpipe and it worked fine.
I’ve seen this problem before where there’s damage done to the heat pipe. The pipe is sealed and made to transfer heat, but any impingement of the pipe will reduce or eliminate the ability for the pipe to transfer heat. The radiator on it looks so crusty and corroded as well. I would have replaced the heatsink assembly just for that alone given there are thermal shutdowns happening with the laptop.
First time I saw this - and it fooled me at first. Putting the MX4 on the CPU made it 'work' the first time and I just left it running for 20 mins and thought it was fixed, without properly testing it. Previously it wouldn't even run for 5 mins.
How it got into that condition I have no idea. After finding the cause of the problem with the two thermo-couples, I did a bit of googling and found the heat pipe is supposed to be filled with a highly compressed gas and this transfers the heat. Honestly before this repair I just thought they were copper bars, A: because copper is a good conductor of heat and B: because i never had a reason to look deeper into the subject.
I told the guy who brought it in to me, another repair shop not the owner, that it isn't repairable unless he finds a heatsink assembly off another scrap one of the same (or compatible) model
@@LearnElectronicsRepair Yes this is a rarity, normally speaking it would be as simple as a clean up and new thermal paste.
8:38 Yeah, me too. I used to get it from eBay but as soon as the pandemic started, the price of IPA spiked by 500% and has never really come back down to where it should be.
My problem is that there is no one who sells it on the island (that I know of) and it can't be sent by mail to here - it is not allowed on aircraft in hold luggage or cabin baggage. So no one will sell it to me if i order on ebay.
I do have another 1L bottle now as a friend who has a mobile phone repair business needed some and he was going over to 'la peninsula' on business (that's mainland Spain to you) for a few days on the ferry so he brought 6 liters back with him.
It looks like the distilled water has leaked out of the heat pipe - it would explain the corrosion on the end - because the heat transfer is slow like normal copper conduction over a long length.
Fascinating. I've got a laptop that I just bought from ebay and the outside casing is very hot to the touch in the upper left corner of the keyboard half. I'm really tempted to open it up and take a look at the fan and all that mularkey, but it's actually working fine, so I just keep thinking, don't fix it if it ain't broke... whereabouts are you based?
You can clean the die and cooler with a can of car brake cleaner. It eats away even the hardest thermal paste and pads. It will even discolor the pcb. Just do not spray it inside, not that healthy.
Thank you so very much
Brilliant.
25:59 Probably the previous "technician" was to lazy to remove the entire heatsink, and bent the heatpipe aside to get the dust out, and then bent it back. There is no other cause that a heatsink gets a dent that way besides a drop of the laptop. For such a dent/bent due a fall, the plastic house must be damaged also, and there is no damage to the plastic housing. Also if you clean and removed a heatsink, you replace such a crumbly cooling compound, and not put it back dry like the previous "technician" did.
This one was lazy too. 😄Screwdriver scratching the copper heatsink, not cleaning the entire die.
Heatpipe is broken, maybe even leaking. Ist is not just a piece of copper, there is liquid and a structure inside. But a crewdriver on the copper heatsink, not cleaning the entire die, wtf?
bro has wolverine hands
Hi there I need advice I have an HP pavilion that is heating up and shutting off. I cleaned out the vents and the fan, but that did not help. After that, I took the cooling system off of the CPU and changed out the Thermal Paste. I am still having issues with the system still shutting down. There is no damage to the CPU cooling unit, and the fan is clean and working perfectly fine.
Same laptop, same problem. Did you resolve it? If so, how?
Having same problem with my laptop
No dust even fan is running at full speed still laptop shutdown automatically and gives an error code of overheating. I think my laptop's heat pipe has damaged
Dead heat pipe
heat pipe has dryed out ? not only that the pipe has been crusted
Yeah I really don't know what happened to this heat pipe in the past. Obviously it has been subjected to a hard life.
@@LearnElectronicsRepair yeah it really busted looks like someone =jammed a scewdriver in maybe
Hi Richard, yes that's the one with the broken heat pipe where the evaporator leaked out ... /watch?v=eKrdJpDSowY ... Do they sell spare ones somewhere ?
Yes, good used ones are available on ebay about €15
Nice sir but pl stop your snoring between exposons... Pl explain straight away