7610 strange problem

[celluniversal]

Nokia 7610 board(PCB) was short

First removed the PF and i checked still board was short

Then i removed the power ic and i checked still board was short???

Wht to do next???How to remove the short??

[foner]

Yes you handled right: Always first remove PA then UEM. (most short of those two)

Now you can search for all VBAT lines in 7610 schematic. (Just search "VBAT" in search window of acrobat reader)

But first of all wash the board and inspect it for damaged parts.

[celluniversal]

Originally Posted by foner

Yes you handled right: Always first remove PA then UEM. (most short of those two)

Now you can search for all VBAT lines in 7610 schematic. (Just search "VBAT" in search window of acrobat reader)

But first of all wash the board and inspect it for damaged parts.

Thank for u r reply

Before removing PA and Power first i was well cleaned the board in ultrasonic cleaner then only i attend the work.

No damaged parts in the PCB

[vinc3ntdave]

Try this.
Use Power supply, connect to your battery connector, give 4Volt.And check the temperature of all the IC. Seek which one is the hottest. That's the failure component.

[ashraf_bcs]

Originally Posted by vinc3ntdave

Try this.
Use Power supply, connect to your battery connector, give 4Volt.And check the temperature of all the IC. Seek which one is the hottest. That's the failure component.

yes,i agree with u.

thanks for this

ASHRAF

[ali4444]

Originally Posted by vinc3ntdave

Try this.
Use Power supply, connect to your battery connector, give 4Volt.And check the temperature of all the IC. Seek which one is the hottest. That's the failure component.

ok i agree with you.