Mainboard Refurbishing. Part 2

How to repair, refurbish, clean old computer mainboards in extreme, but safe mode. Sorry, not solderworks. Only some slide show ant testing movie. It quite difficult to solder and make movie at same time. Ant testing is not interesting- just power up the beast as regular new mainboard. With proper washing and heating nothing is damaged- the same technology is used in board manufacture factory.

Category:

Science & Technology

Tags:

• diy
• mainboard
• computer
• repair
• clean
• dust
• low
• ESR
• capacitor
• damage
• caps
• blow

[mikahgiacchetti]

heh "look at a mirror before commenting" << that don't change how ignorant you are of basic concepts

Wait till you really fuck a mobo up with all the junk that's in the water, they don't use Distilled water in the factory for good health.

[savelkaunas]

try to fix so many motherboard as I fixed and then comment.

[bloodreighn]

@savelkaunas I wouldnt say you fixed anything, but more than likley ( if any of them were working afterwards ) Seriously shorted there life span, Ever thought of what would happen if the Capacitors soaked up the water into there dilectric?? no matter how much heat you put on them without melting them will not get the water out and will short them out and kill the motherboard.

[savelkaunas]

@bloodreighn it is very interesting how water can get inside the caps? BTW I repaired not 5 boards, but lots more. In fact, I receive lots of boards from recycle factory and all boards with cap problems are repaired. And still working fine.

Even ATX PSU, where higher voltages and it is quite difficult to dry transformer are working fine.

Better check what technology is used in China factories. Also, read datasheet of caps, whew thermal storage and soldering of the parts are described.

[mikahgiacchetti]

this guy's a serious tard.

[savelkaunas]

Look at mirror before commenting.

[electronicsjunk]

For the record, I would like to state that using water and a heat gun to clean electronics is perfectly safe! (as long as you know what you are doing). Please look into re-flow soldering (temperatures ramping up to around 210 C, and held for up to 120 seconds). Chances are you will realize that most PCB's (printed circuit boards) are washed after soldering to remove leftover water soluble flux from the PCB. The only prob with rinsing I see is using old water full of flux which causes shorts.

[craigdavison1]

these boards are all well old, so y would u want to save them anyway!

[RetroDOS]

Water alone does not cause corrosion, but hydrogen atoms present in water can combine with other elements to form acids.

Never put any board in regular water, may still work for a few months, but will end causing cold solder joints and corrosion long term. Never put a harddrive in any any liquid.

I use (de-ionized) water to clean boards then use a hairdry first to dry off the board then a heatgun at low temps, then replaced all the capacitors with Japan 105c low ESR with long hours.

[orioncheung]

@bloodreighn Always could like to add. Like water cooling, When it leaks all over the video card and other parts. You try your best to try it up, use a fan and blow at it over night. And it should work fine the next day. I had this problem and my bro had this problem when we started doing water cooling. Over time plastic breaks and it leaks. All I am saying is. Make sure it is very dry, and no water in it before turning the pc back on. And if done right, it will work.

[orioncheung]

@bloodreighn I dont use any LCD screen type keyboard. And yes I have open keyboards before and clean it. Tho, this logitech slim keyboard I have doesnt seem like to be open. So, what I do is I blast water on this keyboard. Then I use a towel and hair dryer to dry it. And I don't use that keyboard for weeks to month. And I use a spare KB. The reason I do this is because over time hard stuff get under the slim keys, making it hard to press. And I done this more than 5 times and it always works.

[bloodreighn]

@orioncheung Ur lucky that it wont do any harm to most keyboards, as most are ribbontraced plastics that are sealed, only leaving the exposed carbon tracings for the keys, unless its a real expencive mobo with LCD/dot-matrix screens i dont see any problem with that method of cleaning them