"3210 dropping signal" - GSM-Forum

farry · 08-11-2001, 17:14

hi guys

does anybody know y my 3210 keeps dropping signal its on/off signal all the times!! any ideas?

 regards

 farry

MDR · 08-12-2001, 15:51

have the RF calibrated at nokia center

sloba · 08-12-2001, 16:34

better try to heat up ccont cobba and 71MHz saw with hot air(or try to replace saw with one in metal casing).works for me.

farry · 08-13-2001, 09:04

hi thanx for your reply guys,but i am a newbie!where can u find ccont cobba and rf? sorry had to ask!!

 thanx again

 regards

farry

asas · 08-15-2001, 21:45

sigkill · 08-20-2001, 14:14

thats right also try to clean it with isopropil alcohol then heat it .

dluik · 08-20-2001, 14:24

hi farry

cobba is an ic on the main board, it controls signalling, if there is a dry joint on the ic it can cause signal fluctuation, so heating it can help.

U really need nokia to reflow this as with ccont.

nokia perform tests on units called rf tests. Basically just used to fine tune power levels etc.

take it to nokia

regards dan

nokya · 08-21-2001, 01:06

Hi Farry...reflow 71Mhz SAW (under big cage,bottom right hand corner)Reflow ccont bga ic(Bigger of the 2 bga ic's right at the top of the board}and finally cobba (bga ic just below the BIG bga ic sealed with glue....CAREFUL buddy if the cobba also has resin or glue around it,then it is best NOT to touch!U can put heat for a few secs but be very careful!GOOD LUCK!!! <img src="wink.gif" border="0">

farry · 08-22-2001, 10:20

hi guys

thanx for your replies(sorry a bit late to thank u as i just came back from holliday!!!)

regards

 farry

eureka8888 · 08-24-2001, 17:10

what does reflow mean? how to do it?

08-11-2001, 17:14	#1 (permalink)
farry No Life Poster Join Date: Dec 2000 Location: uk Posts: 1,058 Member: 2899 Status: Offline Thanks Meter: 6	"3210 dropping signal" hi guys does anybody know y my 3210 keeps dropping signal its on/off signal all the times!! any ideas? <br />regards <br />farry

08-13-2001, 09:04	#4 (permalink)
farry No Life Poster Join Date: Dec 2000 Location: uk Posts: 1,058 Member: 2899 Status: Offline Thanks Meter: 6	hi<br />thanx for your reply guys,but i am a newbie!where can u find ccont cobba and rf? sorry had to ask!! <br />thanx again <br />regards farry

08-20-2001, 14:14	#6 (permalink)
sigkill Insane Poster Join Date: Aug 2001 Location: bulgaria Posts: 71 Member: 5750 Status: Offline Thanks Meter: 0	thats right <br />also try to clean it with isopropil alcohol<br />then heat it .

08-20-2001, 14:24	#7 (permalink)
dluik No Life Poster Join Date: Feb 2001 Location: UK Posts: 729 Member: 3430 Status: Offline Thanks Meter: 3	hi farry cobba is an ic on the main board, it controls signalling, if there is a dry joint on the ic it can cause signal fluctuation, so heating it can help. U really need nokia to reflow this as with ccont. nokia perform tests on units called rf tests. Basically just used to fine tune power levels etc. take it to nokia regards<br />dan

08-22-2001, 10:20	#9 (permalink)
farry No Life Poster Join Date: Dec 2000 Location: uk Posts: 1,058 Member: 2899 Status: Offline Thanks Meter: 6	hi guys thanx for your replies(sorry a bit late to thank u as i just came back from holliday!!!) regards <br />farry

08-12-2001, 15:51	#2 (permalink)
MDR No Life Poster Join Date: Apr 2000 Location: Philippines Posts: 555 Member: 1272 Status: Offline Thanks Meter: 3	have the RF calibrated at nokia center

08-12-2001, 16:34	#3 (permalink)
sloba Freak Poster Join Date: Nov 1999 Location: Serbia Age: 52 Posts: 274 Member: 685 Status: Offline Thanks Meter: 23	better try to heat up ccont cobba and 71MHz saw with hot air(or try to replace saw with one in metal casing).works for me.

08-15-2001, 21:45	#5 (permalink)
asas Freak Poster Join Date: Jul 2001 Location: Lithuania Age: 42 Posts: 495 Member: 5198 Status: Offline Thanks Meter: 2	<img src="smile.gif" border="0">

08-21-2001, 01:06	#8 (permalink)
nokya Freak Poster Join Date: Jul 2001 Posts: 174 Member: 5364 Status: Offline Thanks Meter: 0	Hi Farry...reflow 71Mhz SAW (under big cage,bottom right hand corner)Reflow ccont bga ic(Bigger of the 2 bga ic's right at the top of the board}and finally cobba (bga ic just below the BIG bga ic sealed with glue....CAREFUL buddy if the cobba also has resin or glue around it,then it is best NOT to touch!U can put heat for a few secs but be very careful!GOOD LUCK!!! <img src="wink.gif" border="0">

08-24-2001, 17:10	#10 (permalink)
eureka8888 No Life Poster Join Date: May 2001 Posts: 569 Member: 4675 Status: Offline Thanks Meter: 7	what does reflow mean? how to do it?

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