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Module 2894 battery replacement - Casio PRG-40T-7 Pathfinder

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How can i get water out between 2 glasses on casio pro trek 2894

Hi Dirk
Bad one having water inside your Protrek or any watch for that matter-mechanical or electronic.
It means one of your seals has failed most likely the back one.
Look carefully at the back seal, if you squeeze the back plate, and the main case between your thumb and index finger you may notice a slight movement (use x10 magnification) That microscopic gap is enough to flood your watch and the deeper you use it the bigger the flood. The problem is the case, it is made of cheap nasty plastic and over time it deforms and the rubber seal contracts. Any slight over tightening of the screws, pulls the plastic thread out and stops the back plate making a good seal between the back plate and the rubber seal in the groove of the main case. For the price one would be excused for expecting that these Casio watches had a better quality case, even better a screw on back plate (like a proper 100m depth watch) rather than the individual 4 screws at each corner and a prayer. There are ways of fixing the screw threads but it never lasts....
To get the moisture out, just remove the backplate and discard the batteries. The sooner this is done the better the chances of success. Leave the watch open, face down in a warm place, preferably loosely covered by a glass bowl to stop dirt getting inside. After few hours check if the water is gone. If on inspection of all the contacts they do not exhibit any rust or white chalky deposits. Replace the new batteries and reset the watch by shortening the reset pins. If all seems ok and you have a proper display and all funtions works. You may purchase a new seal from Casio or simply clean the existing one with a little blu-tak to remove the dirt and run A LITTLE!! bead of vaseline along the rubber top to aid the seal.
I will not use the watch under water anymore and chances are that it will be downhill for the watch from now on, sorry.
I hope this helps

Jan 25, 2017 | Casio Watches

1 Answer

My casio pro trek 2894 is frozen it shows op en ontop and when i press the setting button it resets time to 12h00


Have you checked that all buttons when pressed come in and out easily?
Sometimes the little spindles that press the contacts inside the watch do not come out completely and remain "pressed" even if the button appears to be "out"
Clean the watch, with particular attention to the buttons area so they can move easily in and out. If this does not do the trick, open the watch with great care not to damage the threads on the plastic case and visiually inspect if the buttons travel easily in and out and that all springs if fitted are sound. Remove and replace the batteries with new ones (DO NOT use bargain batteries from that "auction site")
and reset the watch.Try again, if ok carefully clean the back seal apply a little vaseline to the top of the seal and close the case. DO NOT over tighten the screws as this will damage the plastic thread and the watch will not seal properly and will be likely to flood with moisture. Good luck

Jan 25, 2017 | Casio Watches

1 Answer

Gasket repair

I've used a toothpik wooden or like the dentist uses and clear form-a-gasket silicone and put that in place of the gasket. and assemble the watch.wipe off any excessive silicone (be care not to have any or as little excess as possible)and allow to dry and then make sure your watch operates correctly.

Oct 21, 2013 | Casio Watches

1 Answer

I replaced all four batteries and i still have nothing .inside the watch it says to jumper the A C point with a twizers. what is the AC point and where.this s a casio 2271 2years old had factory batteries...

Casio battery changes are quite tricky.If you look closely at the watch module there is a place for the battery and a v-small depression usually circular on the silver module .There will be the letters AC in small writing.You need to touch the depression AC and the battery at the same time with a conductive tweezers.This shorts the module and re sets the watch.Make sure any seals go back in to protect from water/dust.

Aug 13, 2010 | Casio PRG-40T-7 Pathfinder

6 Answers

Casio pro trek prg-80T model 2894 display says "open"

May need a battery replacement. My solar atomic watch battery died after 3 months. Casio said the battery was not covered by the warranty. Check this YouTube video for the battery replacement process:

Jul 04, 2010 | Casio Protrek Triple Sensor Tough Solar...

2 Answers

Casio protrek 2894

The battery does NOT need replaced.
The word "Open" on this watch means that the sensor inside the back of the watch has detected that that the back is open. I ended up having to repair this problem myself after a local watch repair guy told me he didn't want to mess with it. You'll have to get a micro-philips screwdriver and remove a few screws and pop the end caps off to get to your problem.
After you have removed the screws and end caps inside the back there's a small spring that pushes against a copper disk glued to the back of the watch. The problem is that Casio has used a crappy glue to hold this disk in place and it needs to be removed and reglued to the back in it's proper place with super glue. It's a pain in the **** but I have repaired mine by doing this. BTW...I have found a video or another help for this fix on line so I won't go too much into it. Do a Google search and you'll find the step by step process listed elsewhere.

Oct 24, 2009 | Casio Protrek Triple Sensor Tough Solar...

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