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How to do a «reballing at home» or «reflow» on a mobile phone

How to do a "reballing at home" or "reflow" on a mobile phone

Refluxing or soldering by refluxing is a procedure that is done to restore the loss of contact between the components of an electronic board. Basically, the components are «solved» and this is as simple as inserting the electronic board in an oven. Although it might be called reballing at home, it’s not the same thing, and obviously this method mentioned here runs the risk of damaging your mobile phone’s electronic board and components, so proceed with caution.

You’ll want to stick your mobile phone card in case there is a contact error on your device card, which in some cases prevents the mobile phone from turning on or off normally. This is exactly what happened in devices like the LG G4 or Nexus 5X, which came with this error from the factory. The manufacturer of both devices itself, LG, acknowledged this defect (although it did not want to fix it in some countries), indicating that the problem was due to a loss of contact between components. The home solution found by some users to this problem was simple: heat the electronic board of the device.

Diagnostic

If your mobile phone restarts constantly, it is most likely a software malfunction, which can be corrected by a simple reset (LG, Motorola). Your mobile phone is unlikely to need a reballing or reflow process due to a loss of contact between components. However, if you think this is the case, you should put your mobile phone in the freezer for about 6 or 7 minutes, in a sealed plastic bag. If the device starts after that, then you may need to do the following.

Heating the electronic board in an oven

On the Dev With Alex website, software engineer Alexander Gee You’ve detailed what you’ve done to fix a malfunction in your LG device. Basically, the process consists of remove the main electronic board from the mobile. Then you have to put it in the oven for 6 and a half minutes, at a temperature of 195 degrees Celsius (390 degrees Fahrenheit). This should reset the welds and fix the problem.

The iFixit page has step-by-step guides for disassembling many mobile phones, including the LG G4 and Nexus 5X. Fortunately, these kits are easy to disassemble.

After deducing that the fault was in the RAM contacts of the Nexus 5X, Gee turned the electronic board «upside down», touching the RAM contacts. aluminum foil (previously wrinkled to limit the amount of heat transferred). This set was placed on a completely flat, safe utensil for cooking in the oven (one ceramic saucepan ideal). It should be heated for 6 and a half minutes at a temperature of 195 degrees Celsius.

If after that the plate is inspected and everything looks good, wait for it to cool and arms back from the device. We hope it should start and work normally.

This person has not only been successful in this process. In our article on this issue with LG devices, at least four people commented that it worked. Each used their own variant of the method. Some put the electronic board to heat for 5 to 10 minutes in an oven at 200 degrees Celsius. Another put the plate on to warm up on a hob for 15 minutes. The most technical one mentioned that he heated the card for 20 seconds, probably using a heat gun.

disadvantage

In Alexander Gee’s article, some users mentioned this the guilt returned after a few hours doing this procedure. It’s not weird. As I said, technically, this procedure is called reflux bonding or ebb and is not recommended by repair pages as well reballingspain.com. On this website (currently not available) it was explained that not a permanent solution. Moreover, this process of «reflow» can irreversibly damage the soldering and the printed circuit board. What they recommend there is to do a reworking process or integral bonding of the component (better known as reballing). This job already requires specialized machines and you will need to take your device to a repair center to do this job.

Only as a last resort

This welding house melting solution will void the device warranty. Only opt for this as a last resort. Before doing so, it is best to process the warranty with the device manufacturer, if it is still valid. You can also request the repair at a cost from the manufacturer or a reputable technical service.

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Motorola stays on the logo and restarts constantly (Moto G case)