What's wrong with Ericsson ," No access" - GSM-Forum

Supergsm · 05-07-2001, 04:14

Recently, I found my Ericsson phone always sometime displays "NO ACCESS", even signal is very strong, cannot make or receive call, when I turn it off, and turn on again or re-search network, it gets access again.
My T18, i888 world, T28 world, R380 world is in same problem, but when I switch to any Nokia phone, everything is fine!
I saw another article from somewhere, another customer complains, Ericsson phone always displays "NO ACCESS" in another network, Nokia phones never have this problem! I believe this is Ericsson phones common problem!
Who knows what's wrong in Ericsson phone

GsmSolution · 05-07-2001, 06:47

Hi supergsm
Yes ericsson have this common problem.Like full bar 3-5 sec no network 3 sec full bar.Ericsson have this problem long time ago.Pf768 ver.9905 have this problem.When ericsson launch a1018,t1x have this problem already.Many user complain.
Here is the solution maybe can help you.
1/use hot air to flow rf parts.
2/change p.a.
3/load software [most common] find good eeprom file and flash file at 1 same phone and write to the phone.
Try this maybe can help you.
I mostly try 1 and 3.

Regards.

ptkrf · 05-07-2001, 10:04

Hi ppl !

this problem is in EEPROM !
replace with one good bin file...
if you need a good bin file for 768, email me

Manfred

papogsm · 05-12-2001, 14:29

Got the same probleme with a T28.

i reprogamme with an other EEPROM dump.
reflash it But nothing to do !!

does someone solve this problemme.

papogsm · 05-22-2001, 13:34

nO iDee ??

GsmSolution · 05-22-2001, 19:14

Hi,Papogsm
Have you try to change p.a.Maybe this will help you.
Regards.

Supergsm · 05-22-2001, 20:02

It seems not is EEPROM problem, all these phones are brand new, never been changed (or unlocked).

strider_X · 04-15-2003, 14:47

erm i have a t20s and my scenario is much worse

ALWAYS the "no access"
no matter what, i start the phone, SEARCH for like 10 minutes
then No access
The phone is stuffed

anyone help me?

DrMobile · 04-15-2003, 15:44

Its a HARDWARE REPAIR RELATED PROBLEM...

MOVED TO HARDWARE REPAIR

Best Regards,
Wahab

shiljo · 04-15-2003, 20:48

Hi!
No acces on Ericsson phones means that TX is not working!
On T2x problem is in bad soldered or bad PA,bad RF processor (11033C1D on T28,30042C2C on T20),bad RX/TX mixer (40307/1)...
There is more options for repair,but these are common...
Similar on old phones,too!
Regards
SHiljo

andie · 04-15-2003, 21:23

Yes shiljo is right

I replaces RF processor on T20 and T28 no access and all of them working fine

cmk · 04-16-2003, 00:36

i have RF processor who need contact me

strider_X · 04-16-2003, 05:28

I dont know anything about phones

so if someone can explain to me what
RF,PA,TX means

and it seems that if i replace the RF processor it might solve my NO ACCESS
problem,

and one more thing, even though the phone says NO ACCESS, the signal bar seems to be working?(cos it changes once in while)

so where can i get a RF processor? and can this be done easily by myself or do i have to goto a technician to solve this?

any help will be greatly apreicated

johny3310 · 04-16-2003, 10:12

Quote:

Originally posted by strider_X
I dont know anything about phones
so if someone can explain to me what
RF,PA,TX means
and it seems that if i replace the RF processor it might solve my NO ACCESS
problem
so where can i get one? and can this be done easily by myself or do i have to goto a technician to solve this?
any help will be greatly apreicated

PA is ower Amplifier
TX is Transmit
RX is Receive ....

Yes, changing RF processor would probably help in your case.
There are many companies that sels spare parts, but i don't think it will be easy to find someone who will sold you just one piece of RF procssor.

To change it you must have experience in BGA soldering, which i think you don't have correct me if i am wrong).
So, it is better for you to take your phone to some service stre to do it for you!

Luciano · 04-16-2003, 10:20

Go to an service or shop who has an GSM tester to run test on that phone, they will give you an raport with the faulty, TX or RX problem.
Also if the networks has barred the phone IMEI or SIM card this can be an problem.

05-07-2001, 04:14	#1 (permalink)
Supergsm Freak Poster Join Date: Apr 2000 Posts: 256 Member: 1266 Status: Offline Thanks Meter: 0	What's wrong with Ericsson ," No access" Recently, I found my Ericsson phone always sometime displays "NO ACCESS", even signal is very strong, cannot make or receive call, when I turn it off, and turn on again or re-search network, it gets access again. My T18, i888 world, T28 world, R380 world is in same problem, but when I switch to any Nokia phone, everything is fine! I saw another article from somewhere, another customer complains, Ericsson phone always displays "NO ACCESS" in another network, Nokia phones never have this problem! I believe this is Ericsson phones common problem! Who knows what's wrong in Ericsson phone

04-15-2003, 14:47	#8 (permalink)
strider_X Junior Member Join Date: Apr 2003 Age: 44 Posts: 3 Member: 26636 Status: Offline Thanks Meter: 0	help erm i have a t20s and my scenario is much worse ALWAYS the "no access" no matter what, i start the phone, SEARCH for like 10 minutes then No access The phone is stuffed anyone help me?

04-15-2003, 21:23	#11 (permalink)
andie Junior Member Join Date: Oct 2002 Posts: 31 Member: 16495 Status: Offline Thanks Meter: 0	Yes shiljo is right I replaces RF processor on T20 and T28 no access and all of them working fine Last edited by andie; 04-15-2003 at 21:32.

04-16-2003, 05:28	#13 (permalink)
strider_X Junior Member Join Date: Apr 2003 Age: 44 Posts: 3 Member: 26636 Status: Offline Thanks Meter: 0	please explain I dont know anything about phones so if someone can explain to me what RF,PA,TX means and it seems that if i replace the RF processor it might solve my NO ACCESS problem, and one more thing, even though the phone says NO ACCESS, the signal bar seems to be working?(cos it changes once in while) so where can i get a RF processor? and can this be done easily by myself or do i have to goto a technician to solve this? any help will be greatly apreicated Last edited by strider_X; 04-16-2003 at 11:21.

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05-07-2001, 06:47	#2 (permalink)
GsmSolution No Life Poster Join Date: Mar 2001 Location: Some where around the world. Posts: 720 Member: 3845 Status: Offline Thanks Meter: 2	Hi supergsm Yes ericsson have this common problem.Like full bar 3-5 sec no network 3 sec full bar.Ericsson have this problem long time ago.Pf768 ver.9905 have this problem.When ericsson launch a1018,t1x have this problem already.Many user complain. Here is the solution maybe can help you. 1/use hot air to flow rf parts. 2/change p.a. 3/load software [most common] find good eeprom file and flash file at 1 same phone and write to the phone. Try this maybe can help you. I mostly try 1 and 3. Regards.

05-07-2001, 10:04	#3 (permalink)
ptkrf Freak Poster Join Date: May 1999 Location: in my mind Age: 56 Posts: 300 Member: 17 Status: Offline Thanks Meter: 6	Hi ppl ! this problem is in EEPROM ! replace with one good bin file... if you need a good bin file for 768, email me Manfred

05-12-2001, 14:29	#4 (permalink)
papogsm Junior Member Join Date: Mar 2001 Location: France Posts: 14 Member: 3619 Status: Offline Thanks Meter: 0	Got the same probleme with a T28. i reprogamme with an other EEPROM dump. reflash it But nothing to do !! does someone solve this problemme.

05-22-2001, 13:34	#5 (permalink)
papogsm Junior Member Join Date: Mar 2001 Location: France Posts: 14 Member: 3619 Status: Offline Thanks Meter: 0	nO iDee ??

05-22-2001, 19:14	#6 (permalink)
GsmSolution No Life Poster Join Date: Mar 2001 Location: Some where around the world. Posts: 720 Member: 3845 Status: Offline Thanks Meter: 2	Hi,Papogsm Have you try to change p.a.Maybe this will help you. Regards.

05-22-2001, 20:02	#7 (permalink)
Supergsm Freak Poster Join Date: Apr 2000 Posts: 256 Member: 1266 Status: Offline Thanks Meter: 0	It seems not is EEPROM problem, all these phones are brand new, never been changed (or unlocked).

04-15-2003, 15:44	#9 (permalink)
DrMobile No Life Poster Join Date: Aug 2001 Location: P A K I S T A N _____________ Age: 40 Posts: 3,579 Member: 5932 Status: Offline Thanks Meter: 1,694	Its a HARDWARE REPAIR RELATED PROBLEM... MOVED TO HARDWARE REPAIR Best Regards, Wahab

04-15-2003, 20:48	#10 (permalink)
shiljo No Life Poster Join Date: Sep 2001 Location: Bosnia and Herzegovina Age: 50 Posts: 798 Member: 6464 Status: Offline Thanks Meter: 6	Hi! No acces on Ericsson phones means that TX is not working! On T2x problem is in bad soldered or bad PA,bad RF processor (11033C1D on T28,30042C2C on T20),bad RX/TX mixer (40307/1)... There is more options for repair,but these are common... Similar on old phones,too! Regards SHiljo

04-16-2003, 00:36	#12 (permalink)
cmk No Life Poster Join Date: Mar 2002 Location: Earth Age: 49 Posts: 587 Member: 10387 Status: Offline Thanks Meter: 3	i have RF processor who need contact me

04-16-2003, 10:20	#15 (permalink)
Luciano Freak Poster Join Date: Aug 2001 Location: RO Posts: 479 Member: 5992 Status: Offline Thanks Meter: 1	Go to an service or shop who has an GSM tester to run test on that phone, they will give you an raport with the faulty, TX or RX problem. Also if the networks has barred the phone IMEI or SIM card this can be an problem.