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Now I'll introduce a consumable used in the maintenance of electronic products

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Flux

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Many people also call it welding oil

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Let's learn how to distinguish between good and bad welding oil

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This is the cheapest

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We can clearly see a matte finish on the surface

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There is a lot of fat in it

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We also call it halogen

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There is no problem with this flux for soldering some wires or the very rough circuit boards in the early days

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This flux cannot be used for the repair of current notebooks, mobile phones and some other very delicate electronic products

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It gets wet easily

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This will lead to some slight short circuits and leakage of the pins of the chip

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This is an imported flux

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We can see that the transparency is obviously much better than this

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Bright on the surface

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The quality of this syringe-like flux is somewhat in between

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In the process of repairing mobile phones and notebooks

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we try to choose some relatively well-known brands in the world

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Then let's learn how to use flux

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Unscrew the plastic cover

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Pull out the cover

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Find a glass syringe

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This is a 5 ml syringe

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Use a knife handle or tweezers to push in

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About 1 ml to 2 ml

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Not too much

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If too much, the pusher inside this syringe stretches very long

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It won't work well

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So 1 to 2 ml is enough

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That's about 2ml

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It will feel better

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When soldering, squeeze the flux directly to the position that needs to be soldered

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Heat with a hot air gun

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Spread the flux

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Then put the chip on it and you can solder it

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The flux packaged in the large bottle can be picked out with tweezers or a blade and wiped into the syringe

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Put that pusher back in

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This is how to use it

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If the maintenance task is not particularly heavy

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Or there is only one maintenance person in a single repair shop

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It is not recommended to buy this large bottle of flux

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If stored properly, it may last about a year

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If it is improperly stored, it can be deteriorated fast within a few days, or a month or two

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After deterioration, the flux will lose its original effect

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Not only can it not play the role of flux, but it will affect the welding

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It is recommended to store flux in an environment below 20 degrees

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It is best to seal it in a ziplock bag and store it in the freezer compartment of the refrigerator

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When you use it, take it out and put it in the syringe

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Then store this large bottle in the refrigerator

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This is all about the flux.Thank you for watching