Author Topic: Component Identification from a wifi D-Link Access Point  (Read 2840 times)

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Offline hggTopic starter

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Component Identification from a wifi D-Link Access Point
« on: April 26, 2014, 08:39:17 pm »
Hi,

I have the D-Link AirPlus Xtreme G+ that stopped working and it looks like that there is a
bad cap which I will have to replace.

On the mainboard there is a daughter board where there external aerial is connected.
Do you have any idea what component is the following?




I haven't seen that before.  It has three solder leads and after the letter X there is a slot
in which you can see a small metal part.  (It does not show well in the picture)

Thanks.

 

Offline David_AVD

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Re: Component Identification from a wifi D-Link Access Point
« Reply #1 on: April 26, 2014, 09:00:00 pm »
Sometimes following the traces to a chip and looking that up can give you clues of the surrounding circuitry.
 

Offline hggTopic starter

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Re: Component Identification from a wifi D-Link Access Point
« Reply #2 on: April 26, 2014, 09:13:40 pm »
Good idea.
The chip next to the component is the TI TNETW1130 Single Chip MAC and baseband processor.
http://focus.ti.com/pdfs/bcg/tnetw1130_prod_bulletin.pdf

I cannot find any datasheet with pinout though.
 

Offline theatrus

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Re: Component Identification from a wifi D-Link Access Point
« Reply #3 on: April 27, 2014, 02:19:02 am »
It's a cheaper (non-metal) packaged 32.768khz crystal.

The marking and footprint are a dead giveaway to me.
Software by day, hardware by night; blueAcro.com
 

Offline hggTopic starter

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Re: Component Identification from a wifi D-Link Access Point
« Reply #4 on: April 27, 2014, 04:50:28 am »
You are probably right.  I cannot see any other crystal on the daugtherboard.
Thank you.
 

Offline theatrus

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Re: Component Identification from a wifi D-Link Access Point
« Reply #5 on: April 27, 2014, 05:34:15 am »
The chip "below" the crystal double leads is probably a RTC
Software by day, hardware by night; blueAcro.com
 

Offline hggTopic starter

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Re: Component Identification from a wifi D-Link Access Point
« Reply #6 on: April 27, 2014, 05:38:03 am »
Its the 408W ST 9345.  Is that an RTC?

 

Offline hggTopic starter

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Re: Component Identification from a wifi D-Link Access Point
« Reply #7 on: April 29, 2014, 05:32:20 pm »
Access Point repaired!  It was indeed a failed capacitor.

By the way, the daughter board has two connectors.  One is going to the outside aerial
and the other is attached onto a long metal strip that is glued on the plastic case. 
No connection with any other metal parts or the main circuit board.

Do you know what is the purpose of that ??



 


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