Hi everyone - I recently rediscovered the Casio DBC-62 watch, a watch that I had many years ago as a kid. It has always been my favorite and I decided to purchase a used one on eBay.
The watch I purchased was in surprisingly good condition even after all these years, but had several small issues I wanted to correct. I've documented the process here with pictures and my descriptions below:
1. Here's the watch - notice that the buttons are almost stuck in all the way, and the screen is pretty hazy/scratched. Despite this, all functions and buttons still work, though sometimes with difficulty.
2. From here, I remove the back of the watch. I have a fresh CR-1616 battery that I will replace while I'm in here. When removing the back of the watch, ensure that you do not lose the two small springs. They look like two tiny silver tubes sticking up in the picture.
To remove the brace that holds the battery, use a pin or thin piece of metal to release the tab on the left side. This will click and pop up, and from there you can release the metal brace and change the battery.
TIP: If you change the battery in 5 minutes or less, you will not lose your saved telephone date or scheduled memos.
IMPORTANT: After replacing the battery, ensure that you temporarily bridge (connect) the little contact that says "AC" with the positive + side of the battery for 5 seconds (use a wire or bend a paper clip to touch both spots at once). If you don't do this, you watch could act very erratically, such as the light being stuck on, the display glitching, and so forth. If you change your battery and your watch suddenly acts very strange, don't panic! Ensure that you do this "AC" bridge step!
NOTE: while the watch is open, "OPEN" is displayed on the screen.
3. The main unit can be removed by using a small flat head screwdriver and gently prying at the bottom of the unit. After a small click noise, it can gradually be removed.
4. To remove and clean the buttons, I first share something VERY IMPORTANT from experience. Do not try to remove the c-rings (button lock rings) without using something to catch them if they fly off. In my case, I put the watch body in a plastic bag and then use a few small screwdriver bits, placing them against the open edges of the "C" shape to remove the ring from the button.
5. From there, the button can be pushed from the inside and popped out. As you can see, the buttons and area under the buttons was quite dirty from the many years of use.
6. Here I would've liked to change the o-rings on the buttons, but don't as of yet have any replacements. I suspect this would help the button shafts make a good seal and slide smoothly.
7. After cleaning the buttons, I applied a dielectric silicone grease around the o-rings and button rod. Before replacing the lock rings, I slide the buttons back and forth a few times and they were silky smooth - much better than the stuck buttons before.
8. After cleaning, greasing, and replacing the buttons, I closed the watch back up and tightened the four screws.
IMPORTANT: If you close your watch and "OPEN" still shows on the screen, this means that one of those silver tube springs is out of place or missing. Ensure that they are in place and try again.
9. When the watch is closed, the watch runs a memory check and the word "CHECK" will appear on the screen for a minute. Once this is complete, the watch will go into normal timekeeping mode and you can set the time, date, year, etc. If you followed the battery change procedure correctly, you should still have your saved telememos and saved data.
10. Here's how the buttons look now. Much better!
11. Here's the secret password screen, and the secret key icon. For some reason, this has always fascinated me.
12. Now to fix the scratches on the screen. To do this, I masked off the sides and top and bottom. I then applied a "Scratch Out" compound that I use to remove light scratches from the clear coat/paint of my car. I applied the compound with a cotton ball, and began to buff in circular motions. I did this for several minutes and until the compound was absorbed into the cotton. From here, I then buffed the screen with the clean and dry side of the cotton until the compound was buffed away for the most part. I then used a little water to rub away the extra compound and dried the watch with a clean soft towel.
13. The screen is now shiny, clear, and looks absolutely amazing in comparison to how it was before. Take a look at the before and after:
This Casio DBC-62 watch is one of my favorites of all time, and was absolutely worth the time it took to give it a clean and polish. I can't stop looking at it now.
Please share your experiences, and any comments or questions you have!