You are viewing pages tagged with: repairs

iPhone Battery Charger / Tester Breakout and HDQ Gas Gauge Stats

Troubleshooting iPhone problems can be a daunting task sometimes considering how complicated they are. It’s easy to overlook the simple things and on occasion you may replace parts that don’t need replacing. Batteries are no exception. I have seen technicians often replace batteries when they may not necessarily need to be or ignore the fact that they could be the cause of the issue at hand. To remedy this I designed a basic iPhone battery charging breakout board system. The system can charge a battery, has the option for expansion to support newer/other batteries and breaks out the battery status pins which can be read from a microcontroller or some other means. It consists of 6 battery connector boards (iPhone 4, 4S, 5, 5S/C, 6, 6+) and a main charging board.

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Posted by on Mon, 1 Aug 2016
tags: repairs, smt, lipo, battery, iphone, apple.

DIY Board Holders for SMT Rework

There are lots of tool choices in the SMT Rework field but many are expensive. Over the past few years there has been an increase in the amount of tools available particularly from low cost Chinese manufacturers (Hakko, Aoyue, Tenma, etc). Most of the equipment I use is from these low cost manufacturers since I simply cannot afford to spend $1000+ for a single specialized piece of hardware. The only expensive piece of equipment I have is my JBC Hot Air Pencil that was purchased from a former employer and I couldn’t pass up the deal. One area I see lacking is board holders. There are plenty of systems out there for holding boards but the cheap ones are … cheap. The expensive ones I’ve seen are complicated or just cost too much. The best holders I’ve used are made by Martin SMT. They’re simply a magnet base with a spring loaded clamp that holds the board. But they unfortunately cost $70 each. You really need 3 at a minimum and 4 is good for the bigger boards which will run you $280, ouch. So, I set out to make my own.

Update Aug 2, 2016: Finally, there is a well engineered, moderately priced magnetic board holder available called PCBite in a set of 4 with steel plate. Mine have been doing me well for more than a year, but it might be time for an upgrade.

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Posted by on Sat, 8 Nov 2014
tags: repairs, smt, rework.

My Great Microphone Fiasco

It’s a common occurance that the microphone will go bad on a cell phone after being subjected to liquid damage. The Samsung Galaxy S3 is no exception so I try to keep some on hand for when they’re needed. I’ve been buying them on ebay usually in lots of 5. Recently, I purchased a 10 lot at a good price but upon arrival I noticed the hole for audio input was different. The mic on the left in the picture above is an OEM Galaxy S3 and the right is the replacement I received.

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Posted by on Mon, 16 Jun 2014
tags: repairs.