Reflow or reflow soldering is a procedure that is done to reestablish the loss of contact between the components of an electronic board. Basically, the components are "solved" and this is as simple as putting the electronic board in an oven. Although it could be called a home reballing, it is not the same and obviously this method mentioned here carries the risk of damaging the board and electronic components of your cell phone, so proceed with caution..
You will want to do a soldering of the board of your cell phone in case there is a contact failure on the board of your device, which in some cases causes the cell phone not to start or turn on normally. This was exactly what happened in equipment like the LG G4 or Nexus 5X , which came with this factory fault. The manufacturer of both teams, LG, recognized this defect (although it did not want to repair it in some countries), indicating that the problem is due to a loss of contact between components. The homemade solution that some users found to this problem was simple: heat the electronic board of the device .
Diagnosis
If your cell phone is constantly restarting, it is most likely a software failure , something that can be corrected with a simple reset ( LG , Motorola ). It is unlikely that your cell phone needs a reballing or reflow process due to a loss of contact between components. However, if you think this is the case, you should put the cell phone in the freezer for around 6 or 7 minutes , in an airtight plastic bag. If after that the device boots, then it may indeed require doing the following..
Heating the electronic board in an oven
En el sitio web Dev With Alex , el ingeniero en software Alexander Gee ha detallado lo que ha hecho para solucionar la falla de contacto en su dispositivo LG. Básicamente, el proceso consiste en extraer la placa electrónica principal del móvil . Luego hay que ponerla dentro del horno por 6 minutos y medio , a una temperatura de 195 grados centigrados (390 grados farenheit). Esto debería restablecer las soldaduras y arreglar el asunto.
La página iFixit tiene guías paso a paso para desarmar muchos móviles, incluyendo el LG G4 y Nexus 5X . Afortunadamente estos son equipos fáciles de desmontar..
After deducing that the fault was in the RAM contacts of his Nexus 5X, Gee turned the electronic board "upside down", with the RAM contacts touching aluminum foil (previously wrinkled to limit the amount of heat transferred). This set was put on a totally flat utensil, safe to cook in the oven ( ideally a ceramic saucepan ). 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 until it cools down and the device is assembled again. Hopefully it should power up and work normally.
Not only has this person been successful with this process. In our article talking about this problem with LG equipment , 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 to heat on an iron for 15 minutes . The more technical one mentioned heating the card for 20 seconds, probably using a heat gun .
The disadvantage
In Alexander Gee's article, some users mentioned that the fault returned after a few hours of doing this procedure. This is not strange. As I said, technically this procedure is called reflow soldering or reflow and is not recommended for repair pages as reballingspain.com . On this website (currently not available) it was explained that it is not a permanent solution . Furthermore, this "reflow" process can irreversibly damage the solders and the printed circuit of the board . What they recommend there is to do a Rework process or an integral resolder 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 have this job done.
Only as a last alternative
This homemade solution of remelting the solders will invalidate the device's warranty . Just opt for it as the last alternative. Before doing so, it is better to process the warranty with the manufacturer of the device, if it is still valid. You can also request the repair at a cost from the manufacturing company itself or from a reputable technical service.
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Motorola stays on the logo and restarts constantly (Moto G case)
