Question about Casio Forester PAS400B-5V Wrist Watch

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Changed battery .A square piece of metal the size of match head fell out. No alarm or light, casio forester FT200

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Mcdevito75 here, Of couse without the watch and piece of metal that fell out it"s very hard to say. Most likely it was part of the lock-down tab to keep the battery in place, in any event don"t lose that piece of metal. If your casio is working ok don"t worry about it, just don"t lose that piece of metal that fell out.

Posted on Jul 05, 2010

Testimonial: "thanks alot"

  • Jimmy Oct 14, 2011

    I have had the same problem. I have the watch apart but I simply cant figure out where this little grounding piece of metal goes? Did you figure this out?

  • Barrows Jewelers May 08, 2014

    If your going to take the back off of your watch to change a battery, first take a photo with your cell phone. If you have to remove screws to get to the cell take a couple of pic. as you get to the cell then you can review the pics as you reassemble it. Make sure your back gasket is in tac. g.barrow

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Posted on Jan 02, 2017

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1 Answer

I have a casio pathfinder model 2273 and the light went out. I changed the batteries, but still no luck. Everything else seems to work just fine.


Hi Jennifer

Two possibiities here one is electronic, unlikely but possible, and one mechanical that you can check.

When you changed the batteries did you notice internally the location of the button that turns the back light on? If you pressed the light button, did the button or a spindle move forward towards the body of the watch? did you notice a contact? or nothing pressed against anything?

When changing the batteries you would have click open the battery holding frame. This frame or internal back plate has around the light button a little piece of metal, like a finger that gets pressed by the button towards a contact in the body of the watch. This finger suffers metal fatigue and quite often looses its springiness or snaps altogether and loses it ability to make contact between the frame and the EL plate that illuminates the back of the watch.
If you are missing this contact perhaps you could buy a replacement plate from Casio. Can not advise as to the costs of doing it yourself or sending it to Casio. It is fiddly job.
Hope this helps

Nov 27, 2016 | Casio Watches

1 Answer

Battery


The Casio Forester FT500WVB watch has an EL (Electroluminescent) backlight and requires one silver oxide button battery. The SR621W battery (also known as type 363) is recommended by the instruction manual for the watch. Note the suffix "W" means this battery is a high drain type which is suitable for powering a watch mechanism and the EL light as well for 2 to 3 years, depending on use of the light. "SW" suffix batteries are low drain and are intended only to power a watch mechanism, and not a light. Note also the "SR" prefix indicates the battery is silver oxide and not lithium. The SR type batteries do not use mercury and are therefore safer to dispose of when they are discharged. I have found the type SR626W (also known as type 377) battery is also suitable for the FT500WVB watch and it has more stored power and should therefore last longer.

Last, the Casio Forrester FT500WC looks exactly like the FT500WVB, but it is a different watch internally. The FT500WC has an LED light and requires two batteries- the SR920SW low drain silver oxide battery which powers the watch mechanism and the CR1616 lithium battery which powers the LED. The LED is brighter than an EL light and stays on longer than the EL light when activated. But the LED has a bright dot light source that some might find annoying.

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I just changed the battery on a Casio watch A158W and now the alarm and hourly chime doesn't work.


The replacement battery may not have been installed properly. It can be a tricky operation. Also, the replacement battery could be ng.

May 31, 2013 | Casio Pathfinder PAG40B-2V wristwatch

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Replaced batteries in Casio Pathfinder watch. Functions work, but alarm does not sound.


there are two reasons for this while changing the battery the small coil sping that operates the alarm as fell out or you av put the back on in the wrong position

Jan 20, 2013 | Watches

1 Answer

How di i change the batteries in my Casio Pathfinder 2782


  • Choose a quiet, well-lit room where you can replace the battery in your Casio Pathfinder watch. Prepare a table, desk or other clean, flat surface where you can perform your watch repair. Put down a soft cloth or piece of craft felt to protect the face of your Casio Pathfinder watch from being scratched during the battery installation process.

  • 2

    Set your Casio Pathfinder watch face-down on the soft cloth or craft felt. Use an optical-sized Philips screwdriver to remove the four screws that secure the watch back to the body of the watch. Set the screws aside, but don't lift the watch back.

  • 3

    Slide the watch back off of the body of the watch very slowly. There are three important springs held underneath the watch back; it is essential to remove the watch back slowly to avoid losing them.

  • 4

    Lift the three springs out of your Casio Pathfinder watch using a small pair of metal tweezers. Take note of the length and placement of the springs as you remove them. Set the springs aside with the other disassembled watch components.

  • 5

    Take the black rubber protective disk out of your Casio Pathfinder to reveal an identically-shaped white plastic disk. Remove the white plastic disk and set it and the black rubber disk aside. Use your metal tweezers, if necessary, to lift out the rubber and plastic disks.

  • 6

    Release the battery strap that holds the battery in place in your Casio Pathfinder watch by pushing the battery strap latch to the left. Remove the old battery from your Casio Pathfinder using a pair of small plastic tweezers.

  • 7

    Pick up your replacement watch battery with the small plastic tweezers and insert it into the battery compartment of your Casio Pathfinder watch. Replace the battery strap and push it gently with the tip of your plastic tweezers to snap the latch in place.

  • 8

    Touch the "-" and "AC" terminals on your Casio Pathfinder watch with the tips of your metal tweezers for at least two seconds. This helps ensure that your watch will work properly once reassembled.

  • 9

    Put your Casio Pathfinder back together to complete the new battery installation. Start by replacing the white plastic disk, followed by the protective black rubber disk. Use your small metal tweezers to replace the small watch springs in their correct locations. Replace the back cover of your Casio Pathfinder, insert the four screws and tighten them with your optical-sized Philips screwdriver.


  • Best regards. Jewel

    Sep 20, 2010 | Casio PRG-40T-7 Pathfinder

    2 Answers

    How do I replace the batteries on my Casio Pathfinder PAG40B-2V watch?


    Thank you for contacting FixYa.
  • Choose a quiet, well-lit room where you can replace the battery in your Casio Pathfinder watch. Prepare a table, desk or other clean, flat surface where you can perform your watch repair. Put down a soft cloth or piece of craft felt to protect the face of your Casio Pathfinder watch from being scratched during the battery installation process.

  • 2

    Set your Casio Pathfinder watch face-down on the soft cloth or craft felt. Use an optical-sized Philips screwdriver to remove the four screws that secure the watch back to the body of the watch. Set the screws aside, but don't lift the watch back.

  • 3

    Slide the watch back off of the body of the watch very slowly. There are three important springs held underneath the watch back; it is essential to remove the watch back slowly to avoid losing them.

  • 4

    Lift the three springs out of your Casio Pathfinder watch using a small pair of metal tweezers. Take note of the length and placement of the springs as you remove them. Set the springs aside with the other disassembled watch components.

  • 5

    Take the black rubber protective disk out of your Casio Pathfinder to reveal an identically-shaped white plastic disk. Remove the white plastic disk and set it and the black rubber disk aside. Use your metal tweezers, if necessary, to lift out the rubber and plastic disks.

  • 6

    Release the battery strap that holds the battery in place in your Casio Pathfinder watch by pushing the battery strap latch to the left. Remove the old battery from your Casio Pathfinder using a pair of small plastic tweezers.

  • 7

    Pick up your replacement watch battery with the small plastic tweezers and insert it into the battery compartment of your Casio Pathfinder watch. Replace the battery strap and push it gently with the tip of your plastic tweezers to snap the latch in place.

  • 8

    Touch the "-" and "AC" terminals on your Casio Pathfinder watch with the tips of your metal tweezers for at least two seconds. This helps ensure that your watch will work properly once reassembled.

  • 9

    Put your Casio Pathfinder back together to complete the new battery installation. Start by replacing the white plastic disk, followed by the protective black rubber disk. Use your small metal tweezers to replace the small watch springs in their correct locations. Replace the back cover of your Casio Pathfinder, insert the four screws and tighten them with your optical-sized Philips screwdriver.


  • Best regards. Jewel

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    My watch stops and when i try to wide it again it won't restart. I also do not have a battery in my watch. Please help!

    Nov 04, 2007 | Watches

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