Question about Casio F91W-1 Wrist Watch

1 Answer

Please help me to replace battery on my casio F-91W

When I remove old battery and put new one, nothing happened? Maybe I need to reset watch with AC point, but where to find this point..

thanks Stefanovic

Posted by on

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that gotĀ 5 achievements.

    Governor:

    An expert whose answer gotĀ voted for 20 times.

    Hot-Shot:

    An expert who has answered 20 questions.

  • Expert
  • 24 Answers

This reset trick works with other Casio Alarm Chrono digital watches, such as my old Model W-720, similar to your F91-W. After the new lithium coil cell is installed and secured with the spring clip, the watch may show random segments in the LCD display or may simply be blank. Insert a sewing needle, paper clip, or blade of a small jeweler's screwdriver into the hole on the back of the movement stamped "AC" (All Clear) to momentarily connect the gold plated contact at the bottom of the hole to the stainless steel battery clip. The battery clip in most such Casio watches is connected to the "+" terminal of the coin cell. This will reset the CMOS chip and it should start up with the watch displaying 12:00 and the date at 1-1. Then, use the control buttons to set the time and date in the normal fashion.

Posted on Oct 29, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

2 Answers

Changing batteries on a Casio G-Shock Cockpit watch


yes. wrong battery possibly...
395/399 = SR927SW/SR927W

The 395 is a lower power output but same voltage (1.5v). The power spike of shorting might have caused a spike in the watch electronics.. make sure they are right polarity too. These batteries are not high current items, but maintain their voltage over the 5+ year lifespan. The S and SW are basically interchangable except for the higher amerage output.

Jan 03, 2015 | Casio G-Shock G511-1AV Wrist Watch

1 Answer

Changing batteries on a Casio G-Shock Cockpit watch


Those batteries are compatible. The reset isn't working right. You may need to send the watch in, or take it to a repair shop that is familiar with that watch. You can probably find one in any large mall...

Jan 03, 2015 | Casio Watches

1 Answer

I have an old Casio watch 863 SDB-500W, I have just change the battery . Light is working but nothing is display. How to reset it ?


To reset the watch, you need to 'short' the reset point with the battery. To do this, with the watch face down and the back removed the 'Reset' point is in the bottom right hand corner (a gold-coloured contact point). Use a pair of metal tweezers or an unbent paper-clip (anything as long as it's metal and will touch the reset point and the back of the battery at the same time). Maintain contact for about 5 seconds and you should get the display back.
I've just changed the battery in my SDB 500W and the above method worked. I did lose the audible 'beep' though and I'm currently on the net trying to find how to get it back. That's how I found your question... :)

Jul 24, 2011 | Bulova Watch

1 Answer

I have a Casio DBC-60. I changed the battery because was not working for long time, but the watch stil is not working


This is an old problem, but maybe this will help someone changing a battery on a Casio. Many Casio watches must be "zeroed out" by putting an pointed tweezers between the back of the battery and the AC terminal off to the side of the battery. On my old Casio Telememo 50, the AC terminal is in a very small hole just above the battery. On the Baby G force, it was in a wider opening, way at the edge of the watch. It has something to do with resetting the watches circuitry so it will operate again. Good luck!

May 14, 2009 | Casio Watches

1 Answer

Timex rush new battery reset


good morning ! you need to use the pointed twisser to short the two reset pad ! thanks !god bless !...

Sep 02, 2008 | Timex Rush Sports Watch

1 Answer

ABX-66


On most casio watch you can see AC (all clear) point , youy need to resset clock connecting this point with + on battery about 5 sec.

I have same problem but on my watch I do not see AC point. :)

regards
ststefan

Aug 14, 2008 | Casio Twincept Databank ABX238BV Wrist...

8 Answers

Replaced battery, now no beep.


I have a Timex Digital Heart Rate Monitor 585 (product code T5C351F5)m, which has the same Short AC Pad and battery +ve message. There is an arrowhead pointing to the pad. It's a raised metal platform - a bit different to some of the Ironman's mentioned above. Here is a pic...6e1fe0e.jpg

May 31, 2008 | Timex Advanced Data Link 53722 Wrist Watch

7 Answers

Battery replacement for a G-shock.


The reset trick works with other Casio Alarm Chrono digital watches, such as my old Model W-720, as well. After the new lithium coil cell is installed and secured with the spring clip, the watch may show random segments in the LCD display or may simply be blank. Insert a sewing needle, paper clip, or blade of a small jeweler's screwdriver into the hole on the back of the movement stamped "AC" (All Clear) to momentarily connect the gold plated contact at the bottom of the hole to the stainless steel battery clip. The battery clip in most such Casio watches is connected to the "+" terminal of the coin cell. This will reset the CMOS chip and it should start up with the watch displaying 12:00 and the date at 1-1. Then, use the control buttons to set the time and date in the normal fashion.

Mar 24, 2008 | Casio G-Shock GW300CA-1V Wrist Watch

4 Answers

Battery Change on T-Touch


there usually is an AC contact point to reset digital watches. Touching the + and the ac point with a conductive wire usually resets the watch. Not sure about the spring- I'm not going to open my Tissot up unless I have to.

Oct 28, 2007 | Tissot T-Touch T33759851

1 Answer

Casio Altimeter watch, no instructions


I was just gifted an old casio pathfinder model 1675 with the manual.

when inserting a new battery.....step #4

AC (AC CLEAR) touch the AC contact and the battery +(positive) side with metal tweezers for about two seconds.
Contacting the AC (all clear)is necessary when a new battery is installed to clear the previous memory to avoid erratic display..
I am going to get a new battery for it soon I want to play with it....and figure out how navigate through the functions.

oh yah......the pictures are extremly small but the AC contact point is apparently marked? inside the case obviously next to the battery close enough for the needle nose tweezers to reach each contact. I havent unscrewed my case yet, I want to have everything I need at hand like the battery before I dive into this thing. I dont mean to dumb it down, I was trying to keep it simple as the manual is 55 pages and a little confusing. I hope this helps the battery problem. I will try to delve into the reset problem from the other post..each function appears to have a reset option ......maybe crack the case open and try the new battery all clear thing with tweezers...maybe this would reboot so to speak the entire watch , being mine does not work and have only had it in hand for two hours I am pretty clueless, I was looking for how much the watch costs...i didnt relize it was a fairly old model, the new ones with the compass look very cool. anyhow goodluck

Oct 21, 2007 | Casio W752V3AV men's watch

Not finding what you are looking for?
Casio F91W-1 Wrist Watch Logo

1,073 people viewed this question

Ask a Question

Usually answered in minutes!

Top Casio Watches Experts

Les Dickinson
Les Dickinson

Level 3 Expert

18304 Answers

Jimmy Accardi

Level 2 Expert

97 Answers

k24674

Level 3 Expert

7993 Answers

Are you a Casio Watch Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...