Tip & How-To about Canon Speedlite 420EX TTL Flash

How to Disassemble 420EX Flash

I wrote up on instructables how to disassemble this flash for anyone needing a guide.

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this site has great tear down instructions for most laptops. if it doesn't have the exact one you can look over a few of the tear downs on different models. you will then understand how to tear down you own laptop.

^_^ good luck bro

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