!!! NO ACCESS / NO NETWORK: 4 PA's CHANGED, 4 FAILURES !!! Hello Ericsson Hardware Experts, After many searches here, I realised that to repair NO ACCESS / NO NETWORK on Ericsson (I have heard even also SonyEricsson) phones, the RF PA has to be changed. OK I have done so on 4 Ericsson phones: T20, T28e, T29s, R320, but to my surprise, they all still show the same "NO ACCESS or NO NETWORK" !!! The PA I used was brought in from Dubai and they were Tagged T28 PA Numbers on PA: RM009-10P E38666_1 0024 MEXICO I am sure of my job, I solder them very neatly with Rework Station, this is since the phones come on. So now what seems to be the problem? This is a challenge to us all !!! Am I using a fake PA, or is it that PA is not the fault? Every Ericsson Expert, lets face it. Starting with you. |
Did you changed the both or only the one of them.Sometimes both of them should be changed and the litle crystals by the RF,like on the T20 or T28 |
@ dannyogolo Its not always PA, PA, PA There is plenty of posts regarding the RF ic's being faulty as well Regards D. |
In this case are 100% RF ic faulty. Tested on T20, T28, T29, R310, R320, 2628, 1018. WBR |
yes i agree RF faults!! |
Quote:
Sir, u just missed sumthing u must change also ur RF pre amps becoz when u change P.A. it will result into low sensitivity in ur RX dats why the phone can't see networks...Hope this helps u:) |
There is a simple GO-N0 GO test for PAs Either use a handheld Field meter or a small transceiver to check if your set is really transmitting. But in your case, like has been pointed-out, it could be your rf ic, which is a stage before your PA |
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