The Apple iPhone 5c was announced on September 10, 2013. Repair of this device is similar to the previous models, and requires screwdrivers and prying tools. Available as GSM or CDMA / 8, 16, 32 GB / White, Pink, Yellow, Blue, and Green.

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Replaced battery + volume controls, now the logic board gets hot, fast

Hey all

Trying to repair my mums iPhone 5c after she dropped it in the washing up bowl.

Replaced the battery +volume/hold switch cable now part of the mother/logic board gets extremely hot and fast when the battery is connected.

I assembled it all back together and with the display connected but lifted it gets hot. This is before attempting to power on or do anything, soon as the battery is in it gets hot.

The heat is coming from this part

Is the logic board fried? Or could it hopefully be something else.

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Deck the Halls
With tools and Fix Kits

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If the phone fell in a wash bowl, then I presume it came in contact with water. With water damage, you have to decontaminate the logic board before doing anything else, otherwise there will be latent issues down the road. Not every water damaged phone is recoverable and depending on the kind of liquid (salty, dirty, filthy), sometimes the success rate is quite low. That said, IMHO, it's always worth a try otherwise we are just piling up the e-waste.

If you want to try yourself, do the following:

  • Open your phone and remove the logic board (follow this guide)
  • Inspect the logic board, especially around the connectors and look for corrosion.
  • Inspect both sides of the board. Unfortunately, 80% of the board is covered in shields. That's usually where the damage is occurring.
  • Put your board in a container with >90% isopropyl alcohol and let it sit for a while.
  • Use a soft brush, like a toothbrush and lightly brush away any corrosion you see.
  • Rinse in alcohol and repeat.
  • Let it air dry for a day.
  • Re-assemble and hope for the best.

You should also consider getting a new battery if it has swollen. Resist the temptation to pop it to let the gas out. A compromised Li-ion battery is a fire hazard. If the device appears to power up but behaves erratically, then use a tool like 3uTools to flash the firmware as it may be corrupted.

A professional repair shop that does water damage repair may be able to recover your phone or the data because they have access to pro-level ultrasonic baths and specialized cleaners as well as the skills to troubleshoot your board. Many shops have a no fix/no fee policy so you don't have to spend money to find out if the phone is fixable or not.

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