N97 mini processor heating - GSM-Forum

Kytan666 · 09-26-2011, 13:15

n97 mini with water damage ( washing machine) , i got the phone fast , and didn't got to oxidize. on power supply the board consumes around 200mA and the CPU is heating. Are there any chances that the CPU to still be good ? or is it worth trying to replace the cpu ? i didn't reflow the board yet.....

Wites OM Tesla · 09-26-2011, 17:58

Quote:

Originally Posted by Kytan666

n97 mini with water damage ( washing machine) , i got the phone fast , and didn't got to oxidize. on power supply the board consumes around 200mA and the CPU is heating. Are there any chances that the CPU to still be good ? or is it worth trying to replace the cpu ? i didn't reflow the board yet.....

Check Vio Vcore if not short in gnd.If not short you are lucky.

Put some soldering flux under cpu and reheat it,if not solve reboll it.

**.:SARCAR:.** · 09-27-2011, 11:01

power consumption is quite high in standby mode , try to check filter capasitors near cpu & power ic (may shorted).

is mobile working normal in psu??

post result

Kytan666 · 09-27-2011, 14:44

the board is dead , sometimes it draws current when i put the clips from the psu , sometimes i need to press power to start drawing current. anyway it's not starting

and 200mA is too much with the board powered off

Wites OM Tesla · 09-27-2011, 15:10

Quote:

Originally Posted by Kytan666

and 200mA is too much with the board powered off

That mean some component is shorting between Vbat & Gnd Check if something else is heating.

Kytan666 · 10-05-2011, 07:42

nothing else is heating. will remove the cpu and test again . is here a chance that something else to cause the cpu to heat ? because i don't have the tools to re-ball that cpu type.

Wites OM Tesla · 10-05-2011, 09:12

Quote:

Originally Posted by Kytan666

nothing else is heating. will remove the cpu and test again . is here a chance that something else to cause the cpu to heat ? because i don't have the tools to re-ball that cpu type.

Then it is cpu to reboll i use a method that is universal http://forum.gsmhosting.com/vbb/f148...g-way-1346110/

09-26-2011, 13:15	#1 (permalink)
Kytan666 Freak Poster Join Date: Sep 2009 Location: Iasi , Romania Age: 40 Posts: 99 Member: 1119968 Status: Offline Thanks Meter: 10	N97 mini processor heating n97 mini with water damage ( washing machine) , i got the phone fast , and didn't got to oxidize. on power supply the board consumes around 200mA and the CPU is heating. Are there any chances that the CPU to still be good ? or is it worth trying to replace the cpu ? i didn't reflow the board yet.....

09-27-2011, 14:44	#4 (permalink)
Kytan666 Freak Poster Join Date: Sep 2009 Location: Iasi , Romania Age: 40 Posts: 99 Member: 1119968 Status: Offline Thanks Meter: 10	the board is dead , sometimes it draws current when i put the clips from the psu , sometimes i need to press power to start drawing current. anyway it's not starting and 200mA is too much with the board powered off Last edited by Kytan666; 09-27-2011 at 14:49.

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09-27-2011, 11:01	#3 (permalink)
.:SARCAR:. Moderator Join Date: Jul 2006 Location: Midnapore,West-Bengal,India Posts: 5,402 Member: 322206 Status: Offline Sonork: 100.1594813/.:SARCAR:. Thanks Meter: 1,350	power consumption is quite high in standby mode , try to check filter capasitors near cpu & power ic (may shorted). is mobile working normal in psu?? post result

10-05-2011, 07:42	#6 (permalink)
Kytan666 Freak Poster Join Date: Sep 2009 Location: Iasi , Romania Age: 40 Posts: 99 Member: 1119968 Status: Offline Thanks Meter: 10	nothing else is heating. will remove the cpu and test again . is here a chance that something else to cause the cpu to heat ? because i don't have the tools to re-ball that cpu type.