Hi,i have disassembled v3 into new o.e.m casing,put every thing back exactly as it came out,connect battery, key pad lights up for 3 seconds,goes out, charge batt screen comes on " battery charging" but won't turn on! any sugesstions thanks!
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Re: won't turn on after assembly
first check the the power volts are comming in ur on of key. if not comming check key pad strips. mostly it prob from key pad may be it is not good connected to board or damage during assembling. first unplug it and then re connect
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1. You most probably have switched on 'Num Lock' mode on your keyboard. Tty to switch back to the 'normal' mode by pressing 'Num Lock' (NumLK or similar) key or Fn+NumLock (depends on your notebook/keyboard model). In the Num Lock mode on the many notebook keyboards pressing U (not V) will produce 4 and / is located near the space, so may be you keyboard have mapped space key to / sign in the Num Lock mode or you just mistyping (you didn't specified the particular model which is mandatory for such a questions).
2. Some transient software or hardware failure. Try to switch your notebook off then on. Next try to fully cut off power - take off PSU connector and take off the battery from the compartment, then take them back.
3. If above advices will not help, thus your keyboard seems to be some kind damaged. If this is the case, most probable reason is internal line short circuit by the liquid (water, etc), leaked to the keyboard. You can order a new/used keyboard from store/ebay or try to fix yours. Some notebook keyboard (pulled off from the compartment - look for service manual or video for your model) are relatively easy to disassemble, and clean mechanical parts and the button matrix films with alcohol or some similar solvent to to clean off short circuiting oxides and eliminate issues.
Most notebook and some desktop keyboards are difficult to disassemble and assemble back due to the multiple (decades) plastic rivets used to assembly all the layers together. Once you disassemble and separate layers to clean, thus You shall restore rivets some way upon the back assembly (new rivets, soldering iron or some glue). On other hand the desktop keyboards are easy to disassembly/assembly and clean in most cases. Most of them are assembled with a few decades of the standard screws.
Next problem you can experience upon disassembly is a pads and traces corrosion. That's why any electronic devices should be powered off immediately, then disassembled and cleaned ASAP once the liquid leakage occurred. Drying is not enough solution and cannot guarantee some oxides didn't covered parts inside will not [partially] short circuit and/or corrode these parts especially upon current will flow again. Moreover this will most probably occur upon a time once liquid reached some important device components inside. Fixation could not be done later in some cases once corrosion have fully destroyed some components. Damaged traces and pads on the keyboard films which made of some conducting composite with aluminium or graphite powder, could be fixed with a special expensive conductive adhesive (glue). Being an experienced electronic engineer, I have successfully fixed a few boards, but this work is very precision, complicated and time consuming (lost a few hours for every case and was forced to asm/disasm tens of times to precisely sharpen pad layers).
I would remove the battery, etc, and then disassemble the keyboard. I would bet the ribbon cable connection from the keyboard/mouse pad is loose or gummed up. The symptoms are of a poor connection causing 'misfire' of the nerves.... Remove the keyboard, clean the ribbon connector, and re-assemble.
Take the back cover off just as you would change the battery out. Remove the battery. Remove the six (6) screws that secure the electronics cards. Four (4) screws secure the processor card (upper card) two (2) screws secure the key pad card. The processor cards holds the key pad card in position. Use a small screw driver and pry the cards from the casing, screw driver or butter knife can be used. Slide blade between cards a case side positions. The lower card has a microphone on its front lower position. Due to moisture from talking on the phone, heat from charging, and the tape utilized by the manufacture to secure the microphone wire, the from of the microphone and the solder connections are shorting out. Use a couple of Q-Tips with Isopropyl alcohol, clean of the solder connections (lower back) of card and clean microphone front. Re-assemble the hand set, reverse directions from disassembling. I have repaired the hand set that came with the phone once, in 5 years, and it is still working.
Hi, try this get the key pad changed , it could be damaged becouse of liquids on so on ad this can make the keys stick Another thing Fash the phone (reinstall phone operating program) ie memory chip (EPROM ) could be corrupted .
Do you have any display on the outside? If not you may have a bad cable between the top and bottom half of the phone. Has the phone been wet at all? Has it been dropped hard? Oh most importantly is it still under warranty?
If you like i can take a look at it for you just let me know if i can help! Good Luck!
The first thing I would do is find a buddy with the same or similar RAZR, and try swapping batteries with them. If this fixes the issue, get a new battery under warranty, or grab one off of eBay for next to nothing.
it could be two problems. one is the battery, clean the connections with Alcohol, or place a small piece of paper between the case and the battery to push the battery down more towards the coonector. second problem could be your key pad flex.
My friend you may have gotten a faulty phone, and i'm quite positive that u did...The
phone may have suffered some water damaged and it was not listed by the seller. Maybe u could send the seller back a nice message. Hope this helps.