pcb repairing mobile phone flux core solder bar

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Identification of PCB 4.In some mobile phones,the anteena switch is merged with PFO.5.PFO It is present beside the antenna switch.6.Network IC It is below or beside the anteena switch and PFO.7.In some mobile phones,the Network IC is merged with the CPU.E.g.Nokia 1200,1650,1208,1209 etc.PCB Trace Corrosion Why It Happens and How to Prevent It Aug 31,2018·But with wave soldering,the solder flux is less likely to reach the required temperature to decompose the acids.Any leftover flux residue is acidic and is highly corrosive.Soldering iron and other equipment for soldering a circuit board.Preventing Corrosion in Your PCB.Copper and other base metals corrode rather easily,while noble metals

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