Question about LG KG800 Cellular Phone

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No signal on my KG800 - randomly disappeared

I get no more signal on my KG800 i can't figure it out, neither can anybody i bring it to. The phone is in perfect condition with a new t-mobile sim card, unlocked, it has been working for a while now and then it suddenly stopped a couple months back. It popped up once randomly and made calls but then it was gone?? Maybe i should get a calling card and call lg support europe?

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  • anon12321 Jan 14, 2008

    I actually looked this problem up on google and i found exactly this. I downloaded a service manual for the phone and i need to fix this power amplifier IC. i am using this service manual i found on rapidshare

    I found the part you are talking about, now do i need to replace this part with a new one or just re-solder it? i'm not sure what you mean by paste, is this solder?



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This is generic problem of network and it occures due to defectice ICs in phone's mother board. There is Power Amplifier IC which acts for stable radio frequency receiving power amplification, other one is radio frequency processor IC inside which works for processing RF signals for generating intermediate frequency. One or both parts may get affected due to many reason but the solution can only be given by examining it physicaly. If you are enough skilled and can do something then open the phone and after applying paste on that both ICs rehot it with hot airgun and it will be OK.

Posted on Jan 14, 2008

  • Irfan Patel
    Irfan Patel Jan 15, 2008

    Brother, PA and Antena Switcher are not BGA (Ball Grid Array) package. They must be replaced with new one. Paste means liquied desoldering and resoldering paste which is made up of resin base chemical. Max and Quick company are manufacturer, there might be other companies manufacturing this thing.



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