Never Have Used A Hot Air Repair Station

[MEXICOWANDERER]

I have a Galaxy S4 that ate the onboard chip for battery control. The chips are available in pandaland but it takes a hot air repair station to remove and install the chip.

There is a video on youtube that explains the process. But I did not see any application of solder, only what I can assume to be (flux?)

I cannot understand speech via cheaper cellphones because of limited hearing and doctors in USA REFUSE to use Whatsapp or text.

Is it fairly uncomplicated to master the art of hot air soldering? I assume it's an alternative to wave soldering. But the lack of adding solder has me puzzled. There is enough residual solder to count on it working? What is the gel like substance droppered onto the work area?

Nine hundred dollars for a new phone would be like nine thousand dollars to a person with an average income. Used Samsungs are getting trashed review-wise on eBay and Amazon. I do not have income to play a four hundred dollar slot machine.

https://www.youtube.com/watch?v=vopBZ9_1tyg

[MEXICOWANDERER]

Don't think I can beat this....


https://www.ebay.com/itm/New-UNOPENDED-Samsung-Galaxy-J7-J700T-T-MOBILE-5-5-Unlocked-Smartphone/1429...

[GordonThree]

Duplicate

[GordonThree]

I have a hot air station, El cheapo from Jeff's website.

It works fine and was easy to learn. On a basic unit there's two knobs, air temperature and air velocity.

It's been my experience velocity is more important, too much air and you get collateral damage of parts being blown off pads. Otherwise the solder surface tension will hold neighbors in place while you grab the intended target.

As for using special adapters, mine came with a bunch and I've never used them. I guess if you're removing a huge chip with hundreds of pins, the adapters might be needed. Removing a small chip or connector, nothing special.

[MrWizard]

i bought my samsung S5 on Amazon new $149

the samsung J7 that friend uses, has really good audio, better than my S5

and his phone cost him less than $100

i don't buy NEW $900 either

https://www.amazon.com/s/ref=nb_sb_ss_i_3_12?url=search-alias%3Daps&field-keywords=samsung+cell+phon...

[MEXICOWANDERER]

Like this?

https://www.ebay.com/itm/853D-3in1-SMD-Soldering-Iron-Hot-Air-Gun-Rework-Station-DC-Power-Supply-Dig...

[ScottG]

Hot air rework takes a very special tool with different adapters for different chip shapes. The adapters focus the heat directly where needed. Just blowing heat on the part would be a krap shoot.

[agesilaus]

This might help



BK