t28 poor signal - what can be done?

[sat]

antenna is ok, tracks seems to be ok too. Changed PA, - no result.

[nnarta]

Hi!<br />1. Check antena socket<br />2. Check antena switch<br />3. Rehot power supply chip<br />4. Replace little RX filter under antena switch (900 mHz nearer center of pcb)

[platy]

Hi Sat,<br />have u solved it? how?? i have one phone with the same problem.......<br />thanx<br />Platy

[acyl2000]

Try change N234 ic. <img src="smile.gif" border="0">

[mobidoc]

hello m8s

low signal can be caused from two main components:<br />1- P.A if part of it damaged<br />2- rx 900mhz filter in gsm networks .<br /> rx 1800mhz filter in dcs networks .

kind regards .

[Bert]

Hello<br />yes,for some poor receiption area the P.A consumtion is too high, after few months your phone will course such problem, put your phone on rf analyzer you will see that ,the rf gain is very low.