HP RW6828 Cannot Receiv call (SOLVED)

[pmmali]

Hi

HP RW6828 shows full reception, however, people cannot call me. "The mobile phone you are calling is switched off. Please call again later." There is just something wrong with my HP rw6828.

also i cannot call any one its showing Call ended withing few seconds.

i try to install latest firmware but still no luck. if i remove the battery and fix after 5 minutes then it work and its again after 2 minutes happen. i thing probably its a hardware fault.

Anyone got this problem?

I need to find out this problem and need to repair it. still it show full signal.

Please if anyone got the same problem? and how do you solve it?

I do Soft Reset,Hard Reset,install latest firmware change the sim card with other provider. profile in Normal general mode(not in flight mode)

[pmmali]

Hi Guys.

I found the problem and repaired. problem on Skywork SKY74045-21 RF IC (RF Subsystem for GSM, GPRS)
and i found this Rf ic on Water damaged old O2 Atom Pcb i just remove RF Ic from Atom PCB and fix to My HP now phone is working perfectly.

Here is the picture of ic and PCB.

I dont know how to attach Pics here so here is the link http://i40.tinypic.com/icnzv4.jpg
Thank you.

[Redtabs]

Hi Guys.

I found the problem and repaired. problem on Skywork SKY74045-21 RF IC (RF Subsystem for GSM, GPRS)
and i found this Rf ic on Water damaged old O2 Atom Pcb i just remove RF Ic from Atom PCB and fix to My HP now phone is working perfectly.

Here is the picture of ic and PCB.

I dont know how to attach Pics here so here is the link http://i40.tinypic.com/icnzv4.jpg
Thank you.

I saw your pic.Which one is the RAM? im curious..just asking if you dont mind.. i see you pretty good on hardware tho.did you replaced it by you self? :p

[pmmali]

I saw your pic.Which one is the RAM? im curious..just asking if you dont mind.. i see you pretty good on hardware tho.did you replaced it by you self? :p

ITS A RAM?

what are you talking? Here is the DATA sheet of SKY7405-21
http://www.skyworksinc.com/uploads/documents/103152H.pdf

ITS not RAM its a RF IC.

Yes i have replaced it my self.
and everyday i REmove-Rebole and replace Flash/Ram CPU ics for Nokia BB5 samsung and and other Brands. coz iam a Hardware Technician

[naset]

if my 3g not working but gsm are working,is it this IC that bring the problem?

[Redtabs]

ITS A RAM?

what are you talking? Here is the DATA sheet of SKY7405-21
http://www.skyworksinc.com/uploads/documents/103152H.pdf

ITS not RAM its a RF IC.

Yes i have replaced it my self.
and everyday i REmove-Rebole and replace Flash/Ram CPU ics for Nokia BB5 samsung and and other Brands. coz iam a Hardware Technician

yes mate i know its the RF FC.im a hardware technician also perhaps you can show me which one is the ram.probly i can try to upgrade my ram by myself. :p btw did you try to repaced any atom ram? it should be good if we can upgrade the ram to 128mb or 256mb tho.

[pmmali]

if my 3g not working but gsm are working,is it this IC that bring the problem?

For you Most propebly Antenna switch if it fail then same RF ic


@Redtabs

RAM IC on ATOM is Spansion S71PL032J its Located near the CPU (CPU Analog Device AD6532AXBCZ)

and iam very new to Windows phones still i dont play too much with any windows phones.and i dont thing atom phones ram can be upgrade coz there are no any extra pin connection to upgrade or swap different rams.

Regards,

[Redtabs]

For you Most propebly Antenna switch if it fail then same RF ic


@Redtabs

RAM IC on ATOM is Spansion S71PL032J its Located near the CPU (CPU Analog Device AD6532AXBCZ)

and iam very new to Windows phones still i dont play too much with any windows phones.and i dont thing atom phones ram can be upgrade coz there are no any extra pin connection to upgrade or swap different rams.

Regards,

thanks man,i can see where the ram is.i agree with that.and also there's no extra pin slot on the board.very disappointed.:( actuly i own an atom life.i been thinking probly i can swap the CPU to other phone that got bigger RAM.coz the pin got the same number.very wasted 624mhz proccessor comes with 64mb RAM.what do you think?