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Go Back   GSM-Forum > GSM & CDMA Phones / Tablets Software & Hardware Area > Nokia > Nokia Hardware & Hardware Repair

Nokia Hardware & Hardware Repair all what you need for Hardware Repairing for Nokia Phones. Before writing any thread here try to check the Frequently Asked Questions Section.

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Old 04-09-2003, 23:36   #1 (permalink)
hs_
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RSSi reading -144dB solution?


Hi I have 3 Nok 3310 with same problem
NO NETWORRKKKK !!!!!!

RSSi reading is -144dB
I changed cobba and HAGAR with new one (not chines Mly)
But nothing...
When I check with RF LED and wintesla TX power no TX power...

RX is bad no TX power

What can I do any idea???

I don't have scope!!!

Thanks
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Old 04-09-2003, 23:39   #2 (permalink)
hs_
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I also changed PA with Metal one, Philips and RFI But nothing
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Old 04-10-2003, 00:32   #3 (permalink)
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one 3310 fixed by changing cobba.
another cant fix.
after changing cobba or ccont , or 26M it shows 125dBm then back to 144dBm.

b.r.

Pali
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Old 04-10-2003, 00:55   #4 (permalink)
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when the phone is turning on,do you have signal for a fiew seconds?
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Old 04-10-2003, 00:57   #5 (permalink)
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try to change ant swither.maybe is brocken
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Old 04-10-2003, 18:34   #6 (permalink)
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Smile

try to remove the capacitor upper left side of cobba.







B.R
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Old 04-10-2003, 22:02   #7 (permalink)
hs_
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When I switch on phone no network...

I also changed PA and ant switch

But I have still have same prolem
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Old 04-12-2003, 13:07   #8 (permalink)
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If when Power On the phone have No Network . .. your problem is PA and Cobba !!
if PA is changed ..

I forget it ..
after changing Cobba and Hagar , you must Repair IMEI, Update Faid, flashing ... etc
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Old 04-12-2003, 23:11   #9 (permalink)
hs_
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Yes after changin PA and COBBA I flashed phone and calculated FAID

But nothing

I will try to change 26MHz osc or I will leave from Bulgaria :-)
Because I will get crazy I don't have money not only I'm in BG people don't have money...

Without a scope it's verrrr difficult to make repair fo mobile phones...

Thanks
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Old 04-13-2003, 00:26   #10 (permalink)
legija
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You don't need a scope if you have good working BRAIN.

Probably, you damaged cobba with hot air.



Also check
this picture

Last edited by legija; 04-13-2003 at 00:33.
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Old 04-14-2003, 23:22   #11 (permalink)
hs_
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Thanks...
I will try this solution

Regarts
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Old 04-15-2003, 00:42   #12 (permalink)
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i fixed another -144dBm n3310 by another solution.
i will try to fix one more and post u my solution !! tomorow
hope it will works for all.


b.r.

Pali
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Old 04-15-2003, 02:21   #13 (permalink)
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Pali
How you did? Share us
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Old 04-16-2003, 23:19   #14 (permalink)
hs_
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Pali I'm waiting your solution too...
I changed cobba CCONT Hagar but nothing... Also PA too...

Regarts
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Old 04-16-2003, 23:26   #15 (permalink)
hs_
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Today I made a test jig for 3310...
I cutted a old phone case for 33xx series where the label is...

At this time I will make a power supply 4V and then I will test it

Regarts
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