22
2
My wife was having dinner in front of (on top of) the laptop and she spilled some soup onto it, right above the touchpad. Almost all of the soup ended up in the upper DIMM slot which sits underneath the keyboard.
I took the laptop apart and I've managed to clean and dry everything other than the internals of the DIMM slot. The slot has a dense, comb-like structure of pins which holds the greasy water in, and I cannot disassemble the DIMM slot in order to clean it thoroughly.
When I turn on the laptop it detects all available RAM and it works normally for about 15-20 minutes, after which it turns off. When I try to turn it on again it emits 1-3-3-1 beeps which means "Bad DIMM or DIMM slot". If I then take out DIMM chips, wipe them and clean the slot with a toothbrush it works again for a short time. I suspect that when the laptop heats up the grease in the DIMM slot melts a bit and short-circuits some pins inside.
I was wondering would it work if I used WD-40 with a straw to fill the DIMM slot, and then dry it with paper towels and a fan? The WD-40 should dissolve the grease and it dries faster than water, I'm just not sure whether after drying it leaves any conductive residues which would cause a short circuit inside the slot. Or is there something else I can try? Any thoughts and ideas are appreciated.
6What type of laptop is this, so that I might avoid it? Any well-engineered laptop should channel spilled liquids away from critical components, not into them. Even cheap $10 keyboards are designed to channel liquids in a safe manner. – dotancohen – 2014-07-02T10:47:25.050
2You can't expect an electronic device to work if there is standing water in it. Please don't use WD-40 it won't solve anything. Besides...A short circuit likely would cause permenant damage to the circuit. – Ramhound – 2014-07-02T11:10:29.857
17Please don't turn it on again until it is completely clean and dry. You're extremely lucky if your attempts at powering it up so far haven't destroyed something permanently yet. – Bob – 2014-07-02T12:06:23.397
Maybe a small amount of isopropyl alcohol mixed with lots of distilled water? (disclaimer: never tried this on a real laptop, but I did bathe a motherboard in distilled water at one point and it worked for years afterwards). – RomanSt – 2014-07-02T14:25:37.183
@dotancohen: It's a Lenovo T520 - I know, it should be better than that... – Boris B. – 2014-07-03T08:08:21.417
@dotancohen Avoid the T520 keyboard - it's a holdover from the IBM laptop keyboards of the 90's. The T530 keyboard can survive an entire pitcher of water - it has gutters that divert the water out two holes in the bottom of the case. (Disclaimer: Do not try this at home!) – Moshe Katz – 2014-07-07T19:10:43.887
@MosheKatz: You owe me a T530 keyboard. Next time put the disclaimer at the beginning! – dotancohen – 2014-07-08T08:36:28.640