V36xx power-off when connect net - GSM-Forum

sjakie · 09-29-2002, 12:08

Hi,

Had this problem before, but never got into it.
Now i want to try it
Could someone tell me what to check first ?

Maybe PA, problem is i dont know name off this.
I have pictures but no code for PA.

Could be PA ?

Thanks
Sjakie

Bert · 09-30-2002, 10:58

yes, mostly is 1800 p.a faulty , it's marking code is ap119

Pandemonio100 · 09-30-2002, 11:29

Or probably there is one little resistor bad on the RF area. first to change Pa control all resistors.

sjakie · 09-30-2002, 11:43

Thanks for reply.
I discoverd removing U300, makes phone work on 1800mhz without power off.
replaced it with otherone, but again phone switches off wenn connecting to network.
Maybe i destroyed it by soldering ?

Thanks
Sjakie

sjakie · 09-30-2002, 13:54

Problem found

With closer look i saw C485 was sticking to another resistor.
Resoldered, all now ok.

thanks for the help

Regards
Sjakie

sjakie · 10-07-2002, 21:23

Hi, sorry for reopening but have again same problem

(

I desolder 900Mhz PA, phone worked good on 1800mhz.
Second i replaced PA 900, same problem.
Removed 1800 PA, same problem.
Put again another PA 900Mhz, phone seems Ok.
So i closed it up.
After 10 minutes 900 Mhz band getting no RX.
Power off and on phone, 3 seconds 900Mhz RX than Zero RX.
After that sometimes 2 seconds RX on 900Mhz.
Manual search gives all providers including 900Mhz.
When trying to get manual login 900Mhz its say registering than nothing.
Could it be FL470-460 problem ?

Thanks
Sjakie

xmobile · 10-08-2002, 23:13

Try to Flash phone with Full FLash.
Maybe help

09-29-2002, 12:08	#1 (permalink)
sjakie No Life Poster Join Date: Jan 2000 Location: NL Age: 55 Posts: 1,380 Member: 847 Status: Offline Thanks Meter: 36	V36xx power-off when connect net(PART 2) Hi, Had this problem before, but never got into it. Now i want to try it Could someone tell me what to check first ? Maybe PA, problem is i dont know name off this. I have pictures but no code for PA. Could be PA ? Thanks Sjakie Last edited by sjakie; 10-07-2002 at 21:16.

10-07-2002, 21:23	#6 (permalink)
sjakie No Life Poster Join Date: Jan 2000 Location: NL Age: 55 Posts: 1,380 Member: 847 Status: Offline Thanks Meter: 36	Part 2 Hi, sorry for reopening but have again same problem ( I desolder 900Mhz PA, phone worked good on 1800mhz. Second i replaced PA 900, same problem. Removed 1800 PA, same problem. Put again another PA 900Mhz, phone seems Ok. So i closed it up. After 10 minutes 900 Mhz band getting no RX. Power off and on phone, 3 seconds 900Mhz RX than Zero RX. After that sometimes 2 seconds RX on 900Mhz. Manual search gives all providers including 900Mhz. When trying to get manual login 900Mhz its say registering than nothing. Could it be FL470-460 problem ? Thanks Sjakie

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09-30-2002, 10:58	#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	yes, mostly is 1800 p.a faulty , it's marking code is ap119

09-30-2002, 11:29	#3 (permalink)
Pandemonio100 No Life Poster Join Date: Feb 2001 Location: ITALY Age: 51 Posts: 3,969 Member: 3381 Status: Offline Thanks Meter: 1,171	Or probably there is one little resistor bad on the RF area. first to change Pa control all resistors.

09-30-2002, 11:43	#4 (permalink)
sjakie No Life Poster Join Date: Jan 2000 Location: NL Age: 55 Posts: 1,380 Member: 847 Status: Offline Thanks Meter: 36	Thanks for reply. I discoverd removing U300, makes phone work on 1800mhz without power off. replaced it with otherone, but again phone switches off wenn connecting to network. Maybe i destroyed it by soldering ? Thanks Sjakie

09-30-2002, 13:54	#5 (permalink)
sjakie No Life Poster Join Date: Jan 2000 Location: NL Age: 55 Posts: 1,380 Member: 847 Status: Offline Thanks Meter: 36	Problem found With closer look i saw C485 was sticking to another resistor. Resoldered, all now ok. thanks for the help Regards Sjakie

10-08-2002, 23:13	#7 (permalink)
xmobile Major Poster Join Date: Sep 2002 Location: Novi Sad,YU Posts: 43 Member: 15650 Status: Offline Thanks Meter: 0	Try to Flash phone with Full FLash. Maybe help