Many probs but mainly I am looking for a way to open the case
1. My backlight stays on as long as the battery is in the back - even when its not in windows mobile. 2. My screen has started to go into 256 color mode (think the lcd ribbon has come somewhat loose). How do I go about opening the case - I removed 4 screws on the bottom under the battery - but the top part by the camera will not 'pop' out, is there some magic I'm missing here? I just want to take it apart so I can check the connections.
Re: Many probs but mainly I am looking for a way to open...
Well, there are screws on all 4 sides of the top lcd panel, and the keyboard panel, but the slider doesn't slide in that direction so they are always hidden. I figured you have to start from the bottom removing layer by layer. Can't get the camera point off and I'm scratching the case in the process.
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The two main causes of battery life loss that no one thinks of are:
backlight settings (if you don't really need the backlight to stay on for 60 seconds after the last button press, lower it. this is a huge waste of battery life and it is easily changed in the settings menu of nearly every phone i have seen)
poor signal areas (when you have low signal, you phone wastes its battery life searching for acquirable signal. if it is unable to locate the signal, it will continue to search. this search uses up your battery life quite rapidly)
This can be caused by a number of things. 1st you need to check the battery terminal connections that connect your battery to the main board. They need to be bend forward to make sure they have firm contact with the board. (you need to open the phone for this)
2nd look inside the USb port where you plug in your charger. Does any of the Copper pins appear out of place (there are 5). Is any of them missing or bent back?
The Treo 90 had a problem with backlight failure, which Handspring acknowledged and began fixing back in 2002. However, their guideline was that if your 90 did not fail within 6 weeks of use, it did not have the defective part responsible for the failure.
Your backlight probably has just died of old age. It is EXTREMELY difficult to replace just the backlight (I've tried). If you search long enough on eBay, though, you can probably find a 90 with a broken case, dead battery, broken motherboard, or some other ailment, but with a functioning screen/keyboard assembly, including backlight. It's a pretty simple matter to replace the screen/keyboard assembly (there's a screw hidden under the battery that holds it into the front frame).
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.