Question about Sony Ericsson K750i Cellular Phone
I turned my phone off but the keyboard light stayed on so i turned the phone back on and off again but still it stayed on so i took our the battery and it went off but wen i put the battery bk in it came on again!
I had the same problem and was not a software problem, I dismantled the phone just taking the two screws near the battery compartment, remembering of course it is necessary to remove the battery as a precaution before and the memory stick as well. Once this is done remove the front cover with a thin key carefully, with a cotton swab moistened with alcohol, clean the metal contacts including some that are in contact with the housing of the keyboard (the bottom of the metal device that is covered by a white plastic material) inside of the sides that look good, you'll know when to open, just waiting a few moments to dry and re-inserting the battery test. I emphasize that this part of the white internal keyboard must be in contact with the bottom where it enters into contact with small contacts, where they might be the electrical ground.
Eu tive o mesmo problema e não era problema de software, eu desmontei o celular apenas tirando os dois parafusos próximos do compartimento da bateria, lembrando claro que é necessário retirar a bateria antes e por precaução o memory stick também. Feito isso retire a parte da frente da capa com uma chave fina com cuidado, com um pedaço de algodão levemente umedecido com álcool, limpe os contatos metálicos inclusive uns que ficam em contato com a carcaça do teclado (parte de baixo metálica do dispositivo que está coberto por um material plástico branco) da parte interna que ficam bem nas laterais, você vai saber quando abrir, espera alguns instantes apenas para secar e teste inserindo novamente a bateria. Ressalto que essa parte branco do teclado interna precisa estar em contato com a parte de baixo onde ela entre em contato com pequenos contatos, onde possivelmente deve ser o aterramento elétrico.
Posted on Jun 19, 2011
See if this works for you...
Settings --> Power Management --> Backlight timeout on battery (or AC)
I tried Power Management and had it set to NEVER on both battery and AC and the keypad backlight still
goes out about 10 sec. I even tried differant time settings. I'm wondering if there is something wrong with my phone or is that how it is?
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Posted on Jan 28, 2008
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Posted on Jan 02, 2017
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