I have changed the battery in my Casio 1604 a200 watch but now the screen isn't displaying correctly. Is there anyway of resetting the watch?

HOW TO set your time on a G-Shock watch - YouTube

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https://www.youtube.com/watch?v=_cwKYE1JMXM
Apr 8, 2013 - Uploaded by JseanSSent
This is a how to video on setting your G-Shock. ... Casio GSHOCK GA110GB-1A REVIEW ' How To Set Time ' LIGHT DISPLAY - Duration: 2:59.

Reset gshock - YouTube

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https://www.youtube.com/watch?v=s6XVUqui6Nw
Jun 7, 2014 - Uploaded by aswan yusof
Tutorial how to reset gshock after changing battery. ... Reset gshock .... GA110-1B Stealth Black Casio G-Shock WatchReview - Analog DIgital ...

Your watch is solar powered, so I think it isn't charged lately. At a low charge, the watch goes into saving mode by switching off the display (while keeping the time, date, etc.). To charge the watch leave it in a brightly lit spot for a day or two. That should be enough to make the watch function as normal again.

For more information, you can download the manual of your watch here (direct download link):
Timepieces Watches Manuals CASIO

A bit late but... There are connections on the PCB that you need to short to ground. Top right of the screen resets the watch. Middle one resets the screen. When you have assembled the watch you can see the holes on the white plastic part.

mcdevito75 here, Casio uses an LCD crystal, Liquid Display Crystal, during a battery change any, any un do pressure remopveing or replaceing the battery could destroy the LCD. Take my advise, with a casio watch, look for a small watch repair shop in your area for the battery change. I"ve ruined many of my casio watches during battery change.

mcdevito75 here, Casio watch with the LCD display, any wrong pressure on this display and your Casio is ruined, the liquid display can break very easily. BEST BET, look for a small watch repair shop in your area for this battery change.

The open code is saying that your case isn't closed properly. Without seeing it, it's hard to tell if you opened/closed the case correctly. If you believe it is closed properly, look in your user manual and see if there is a master reset button and try that. Did you change the battery yourself or did you have a jeweler do it?

I'll post in case somebody still needs this. This is the general procedure to switch the ATC 1200 from meters to feet. You can also switch the ATC 1200 (1170) from C to F. This is very helpful if you change the batteries and the watch gets reset to meters.

Also note, when you pull out the two batteries, you may not get the watch to come up. This is because of a race condition when the watch gets power. To fix this, look for the AC mark on the inside of the watch. Under this marking, in a little space to the left, are two copper pads. Short this out with a small screw driver to get the watch to ground zero.

To fix the Metric measurements:

1. Go to the home screen on the watch. This is when the the 3 letter abbr for the day is at the top. Also, if you cycle the mode button, it is the screen where the final beep is "high."

2. Then press the "memory" button, which will take the home display to the data screen. This shows current time, pressure and temperature.

3. Hold down the adjust button, until the set screen comes up.

4. Tab the mode/select button on the watch until you get a flashing C. Then press the memory button to toggle to F.

You can adjust all the measurements from this screen.

This may sound dumb but make sure the battery is in the correct side up. There should be a + or - symbol on top of the metal piece that snaps over the battery. If that's correct get a pair of tweezers and spread them open, and touch one side to the top of the battery and the other side down inside a little hole with ac marked beside it. That will reset the watch, and your display should come on.