How To Change Battery and AC Reset CASIO G-Shock GA-100CF Watch | SolimBD | DIY

How to Replace the Battery and Perform an AC Reset on a CASIO G-Shock GA-100CF Watch**

**Introduction**

This guide will provide you with step-by-step instructions on how to replace the battery and perform an AC (All Clear) reset on a CASIO G-Shock GA-100CF watch. Please note that this process requires the use of specific watchmaker tools.

**Identifying the Need for an AC Reset**

If the display on your digital watch is malfunctioning or displaying incorrect information, it may require an AC reset. Upon removing the watch's back, you should observe an indication of a reset hole on the watch's movement. This is often marked with the letters "AC."

**Battery Replacement**

1. **Battery Type:** The CASIO G-Shock GA-100CF watch utilizes a CR1220 battery. Compatible battery brands include Renata, Sony, and Maxell.

2. **Battery Replacement Procedure:**

a) Open the watch's back using the appropriate watchmaker tool.
b) Locate the battery compartment and carefully remove the old battery.
c) Insert the new CR1220 battery, ensuring proper polarity.
d) Secure the battery compartment and close the watch's back.

**AC Reset Procedure**

1. **Identifying the AC Reset Hole:** After removing the watch's back, locate the AC reset hole on the watch's movement. It is typically marked with the letters "AC."

2. **Resetting the Watch:**

a) Insert the tip of a non-metallic tool, such as a toothpick, into the AC reset hole.
b) Gently press and hold the reset button for approximately two seconds.
c) The watch should now be reset, and the display should function correctly.

**Conclusion**

By following these instructions, you can successfully replace the battery and perform an AC reset on your CASIO G-Shock GA-100CF watch. If you encounter any difficulties or have additional questions, please consult a professional watch repair service.

[iamtheonlywilly]

I like how you zoomed in on the battery de-installation. Its slow and I was able to not have to replay the video over and over again! Good job!!

[MrSebesta]

Thank you!!! Wanted to make 100% sure that I was understanding the directions that are printed on the battery cover that states to "contact the AC to - after battery replacement " which I assumed was something you would do with the battery removed in order to discharge the caps. Now I know that you MUST have a new battery installed prior to "AC reset" YOU!!!!

[lilmama]

Best video I've found showing how to change the battery in a G-Shock!! Thank You!🤩

[zaccampa]

Thank you so much! You made it look a lot easier than it was lol when the whole assembly popped out I thought I thought I broke it. I almost had a heart attack. But it’s all set so thank you so much.

[AlexandreCout]

i work in a watch shop here in brazil and your videos have helped me a lot thank you very much for posting your videos good luck !

[microwaveoven]

Works perfectly, now this old ga-100 can chug along for a few more years 👍

[parallelsuns]

You've nailed that, though it's not necessary to use metal tweezers to put the new battery in as it's easy to just push it back in with your fingers and that negates having to press the AC button as it's not going to be shorted by the tweezers.

[junangeles]

Hello. Thanks for this video. What is the diameter of the rubber gasket for this model? 0.7, 0.8 or 0.9 mm?

[olraytuh]

Thank you! I don't need to go to gschock service center, instead I can do it on my own.

[JacobRubioJunior]

That was really helpful. Amazing job. Thank you!

[TheShamwari]

Very clear, but I wish you would speak and explain what and why ? I have a Canibal watch ( bought 2016} and I have fitted the 3rd battery of it's life. IE this is second for me. First time I did not do anything about shorting AC . Now it is not starting and I can see AC marked on metal part but it is not clear where to place tweezer legs ?

[dziugytodzg]

great video. How about ga-2100 ? Its the same just with two batteries ? Or maybe you will have a video ?

[siliconsugu]

Shall I get movement of this model gshock

[TzazaBonez]

I accidentally poped off the clip that holds the battery down, i was able to some whatget it in place do u know if it will still work or is it ruined

[TorQue_WrenCh]

Sir, i have problem with my g shock G5600e Tough solar, Its shows flashing CHG on screen, i thought the battery worn out, so change it, the problem still the same 😢, any button fail to be pushed which i don't understand

[Adithya]

Can I use cr2016 battery in this watch?

[SHADYBRAZIL]

I've done that and lights up, but after fades out and doesn't work...can you help me pls ?

[GMac-gi]

Be careful with the sharp edges of the steel back cover.

[mgfragiotta]

What if the reset doesn't happen after putting new batteries in and doing the reset thing ?

[meghnathsharma]

Hii what if i don't do that with tweezer what he did in the end will.my watch work?