Question about Casio Cassiopeia E-125 Pocket PC

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CASIO E-125 has no backlight

Need help please: My CASIO E-125 is still working but there's no backlight. I can see it's working in the background but without backlight it's so frustrating. Can anyone show me how to fix it or where I can have it fixed? THis PDA is out of warranty though. Thanks PDN

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Pretty common problem, and is normally one of three possibilities: 1. Ribbon cable that connects the backlight daughterboard to the motherboard connector has gone bad, or contacts oxidized. 2. Daughterboard itself has gone bad... 3. Power problem or cpu problem not activating upon powerup. Not as likely. 4.The fluorescent tube itself may has blown. The cure: carefully disassemble your 125, clean the ribbon contacts on both ends of the tiny ribbon cable, be careful, it is very fragile. If that doesn't work, find someone who has a E125 and swap out ribbon cables and see that works, that will at least tell you if the cable is bad or not. If that doesn't work, swap out daughterboards. If that doesn't work, sell it for parts on EBay and buy a new one, because anything else will probably be too expensive.

Posted on Sep 05, 2005

  • deton8 von Splosion Dec 27, 2010

    eBay indeed...

    Try not to be a dishonest slug... tell the truth when you "sell" it for parts...

    Anything else is just plain stealing... Saying "good for parts" when you know it is NOT...!!!

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I have problem with backlight. first it work normaly but after it did not work. maybe it is switch of. i have not user manual. second problem is that i do not hear signal. I have casio g 7302Rl


Hi,you need to look at the user manual..
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CASIO Watch User Manual Archives

http://world.casio.com/wat/download/en/manual/
Use this page to download a copy of CASIO watch manuals in PDF format.
To download a PDF file, enter the four-digit (or three-digit) module number marked on the back cover of your watch.

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Casio e-125 problem


Sounds like you might have a bad cable or something. Did you try plugging ppc into its power pack while using the cable?

Sep 06, 2005 | Casio Cassiopeia E-125 Pocket PC

2 Answers

E-125 dark screen


Bingo! You hit the problem on the head. If you can still see an image, albeit extremely faint, and the Casio is still working, i.e. playing an mp3 file or whatever, then you definitely have a problem with the backlight. More times than not, this is either a daughterboard problem or a connection problem (rarely have I seen an actual bulb failure though it can happen). One of the more common causes is the tiny ribbon cable connector on the daughterboard. You might try to disassemble it, clean the contacts of the ribbon and reassemble the device. I've also heard of people squeezing in the side of the case to temporarily effect repairs...this is normally more ominous.

Sep 06, 2005 | Casio Cassiopeia E-125 Pocket PC

1 Answer

Help with E125!


Before turning off the device close all applications running in the background. If this solves your problem it is time to do a full cleanup & adding some application like Gigabar or KillMe to help you quickly close the unused applications to free required memory.

Sep 06, 2005 | Casio Cassiopeia E-125 Pocket PC

1 Answer

CASIO E-125 no backlit


Usually the ribbon cable connection that powers the backlight is the problem.If you remove the four screws in the back and take off the back cover. (note that there are two tabs on both sides of the cover half way up)You can see the white ribbon cable on the left above the battery back housing. Gently wiggle it and see if the backlight goes on. The cable is attached with a small brown insert that holds it in. It is removable so you might be able to get an electronics shop to replace the cable connection or the cable itself.

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1 Answer

Cassiopeia E-125 & Nokia 7650


You will need 2 things. Software to load on your E-125. The included Cd with your Nokia should have it. You will need a special cable to connect Nokia to E-125. I don't know where you will find it easily. There is a firm in Finland which makes all kinds of cables to connect different models of Cassiopeias to different models of mobile phones - essentially Siemens, Nokia & Ericsson. They run about US$ 50/= Last time I saw their listing it was 4 pages long. You might have to do some searching on the net or contact Casio for information. Hope this helps.

Sep 05, 2005 | Casio Cassiopeia E-125 Pocket PC

1 Answer

E-125 Owners BEWARE!


Unless a Casio technician has looked at it don't take Casio's word for it. There is an inverter PCB which converts the DC to high frequency AC for the fluorescent back light. lamp. This is available & can be repaired / replaced. There is also an issue with the E-125 backlighting which simply requires resoldering of a connector on the main pcb. Then there is the fluorescent lamp itself which can go bad & may be replaced. So DO take your device to a well equipped competent technician to look for the precise problem.

Sep 05, 2005 | Casio Cassiopeia E-125 Pocket PC

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