Big problem After Changing PA - GSM-Forum

Black-Axe · 10-21-2002, 19:45

I keep getting this problem, when a phone's signal drops after 5 secs and I change PA, it will have signal but very low. I've had this problem on almost 5 phones why is this so? Even after I changed antenna switch, still the same? Helpppppppppppp!!!!!

Bert · 10-22-2002, 03:00

Hello
What's the phone model?

Black-Axe · 10-22-2002, 07:41

nokia 3210 & 3310

hyper_wamir · 10-23-2002, 02:55

Black-Axe,

have you reflowed hagar ad cobba???
if not, try doin those things...

br

wamir

willy · 10-23-2002, 04:28

Black-Axe

Check at antenna connector , make sure it is work will !
then REBALL cobba !

Willy

hs_ · 10-23-2002, 22:27

I have same problem

ARS · 10-23-2002, 23:16

Remove PA and check if all contact was good conected to PCB...no one shold be gold, but silver after good soldering...If is all OK, maybe ist it COBBA or HAGGAR (bad conection to PCB, just reflow it) or replace FDK.

Keke · 10-24-2002, 11:26

I hot you did put together ur tool, if not u'll never get goog result chnging ur PA or ant sw . other possibility is to remove the tip of ur magnum hot air to improve ur air flow control.

Goodluck
____________________________
All I know is I know nothing

DMD · 11-21-2002, 19:25

Hi Black-Axe

what antenna switch are you using ?
the ones i get in cape town are s**t after replacing them the phone has poor signal let me know you got my number

Later D.

EGYGSM-TEAM · 11-22-2002, 02:04

hi Black-Axe
first remove the new pa you replaced then power on the phone without pa and check the signal is it low or good?
if the signal is good then your pa is not good
if the signal also low then you must check your antenna switch and antenna if good then rehot or reball ccont it happend with me more than one
please send result
you can try this solution for antenna switch on this page
http://groups.yahoo.com/group/wes_na...okia/Hardware/
Wesam

Bert · 11-22-2002, 02:54

Hello
Usually for such problem, I will check the 26MHZ VCTCXO output
and cobba , they are most easy to cause such problem!

Black-Axe · 11-22-2002, 06:34

Thanks alot people

The problem was the antenna switch, I used 0503A but when changed to 0508A signal was full and no problems at all.

10-21-2002, 19:45	#1 (permalink)
Black-Axe Freak Poster Join Date: Jun 2002 Location: North Pole Posts: 181 Member: 12869 Status: Offline Thanks Meter: 3	Big problem After Changing PA I keep getting this problem, when a phone's signal drops after 5 secs and I change PA, it will have signal but very low. I've had this problem on almost 5 phones why is this so? Even after I changed antenna switch, still the same? Helpppppppppppp!!!!!

11-21-2002, 19:25	#9 (permalink)
DMD No Life Poster Join Date: Jun 2002 Location: CTSA Age: 46 Posts: 2,194 Member: 12660 Status: Offline Thanks Meter: 7	3310 Hi Black-Axe what antenna switch are you using ? the ones i get in cape town are s**t after replacing them the phone has poor signal let me know you got my number Later D.

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10-22-2002, 03:00	#2 (permalink)
Bert No Life Poster Join Date: Oct 1999 Location: Hong Kong Posts: 1,509 Member: 596 Status: Offline Sonork: 100.33096 Thanks Meter: 514	Hello What's the phone model?

10-22-2002, 07:41	#3 (permalink)
Black-Axe Freak Poster Join Date: Jun 2002 Location: North Pole Posts: 181 Member: 12869 Status: Offline Thanks Meter: 3	nokia 3210 & 3310

10-23-2002, 02:55	#4 (permalink)
hyper_wamir Freak Poster Join Date: Feb 2002 Location: davao, philippines Age: 43 Posts: 247 Member: 9398 Status: Offline Thanks Meter: 1	Black-Axe, have you reflowed hagar ad cobba??? if not, try doin those things... br wamir

10-23-2002, 04:28	#5 (permalink)
willy No Life Poster Join Date: Mar 2000 Location: inside NOKIA phone Age: 58 Posts: 1,677 Member: 1060 Status: Offline Thanks Meter: 10	Black-Axe Check at antenna connector , make sure it is work will ! then REBALL cobba ! Willy

10-23-2002, 22:27	#6 (permalink)
hs_ Insane Poster Join Date: Oct 2002 Posts: 72 Member: 16859 Status: Offline Thanks Meter: 0	I have same problem

10-23-2002, 23:16	#7 (permalink)
ARS No Life Poster Join Date: Dec 2000 Location: Slovakia, Brezno Posts: 980 Member: 2721 Status: Offline Thanks Meter: 23	Remove PA and check if all contact was good conected to PCB...no one shold be gold, but silver after good soldering...If is all OK, maybe ist it COBBA or HAGGAR (bad conection to PCB, just reflow it) or replace FDK.

10-24-2002, 11:26	#8 (permalink)
Keke No Life Poster Join Date: Jun 2002 Location: CT SA Age: 52 Posts: 1,387 Member: 12733 Status: Offline Thanks Meter: 26	I hot you did put together ur tool, if not u'll never get goog result chnging ur PA or ant sw . other possibility is to remove the tip of ur magnum hot air to improve ur air flow control. Goodluck ____________________________ All I know is I know nothing

11-22-2002, 02:04	#10 (permalink)
EGYGSM-TEAM Insane Poster Join Date: Jul 2002 Location: Egypt Age: 45 Posts: 98 Member: 14194 Status: Offline Thanks Meter: 4	hi Black-Axe first remove the new pa you replaced then power on the phone without pa and check the signal is it low or good? if the signal is good then your pa is not good if the signal also low then you must check your antenna switch and antenna if good then rehot or reball ccont it happend with me more than one please send result you can try this solution for antenna switch on this page http://groups.yahoo.com/group/wes_na...okia/Hardware/ Wesam

11-22-2002, 02:54	#11 (permalink)
Bert No Life Poster Join Date: Oct 1999 Location: Hong Kong Posts: 1,509 Member: 596 Status: Offline Sonork: 100.33096 Thanks Meter: 514	Hello Usually for such problem, I will check the 26MHZ VCTCXO output and cobba , they are most easy to cause such problem!

11-22-2002, 06:34	#12 (permalink)
Black-Axe Freak Poster Join Date: Jun 2002 Location: North Pole Posts: 181 Member: 12869 Status: Offline Thanks Meter: 3	Thanks alot people The problem was the antenna switch, I used 0503A but when changed to 0508A signal was full and no problems at all.