Author Topic: ALFA AWU036H repair  (Read 2905 times)

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Offline papabol_24

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ALFA AWU036H repair
« on: November 12, 2014, 10:01:38 am »
Hello, i have two alfa awu036h usb wireless adapters which suddenly became dead for no apparent reason, opened them up and did some basic checks and found out that "FB3" was busted, i tried to replace both on my alfa's but yay magic smoke came, again did some multimeter checks and the ouput of the power supply section which contains the FB3 goes to the rf power amp section, i removed the rf amp chip (U5) no more shorts, no more smoke hehehe, the problem is i cant figure the part number of the chip, the marking on the chip is 1046, google search yields no sure results, i was wondering if any of you guys are familiar with this chip or a known direct replacement for it.


Thanks in advance.
« Last Edit: November 12, 2014, 04:50:27 pm by papabol_24 »
 

Offline retiredcaps

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Re: ALFA AWU036H repair
« Reply #1 on: November 12, 2014, 03:42:47 pm »
Is FB a ferrite bead?
 

Offline papabol_24

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Re: ALFA AWU036H repair
« Reply #2 on: November 12, 2014, 04:06:01 pm »
Oh yes, im sorry, it is a ferrite bead, I thought those are fuses.
« Last Edit: November 12, 2014, 04:17:12 pm by papabol_24 »
 

Offline retiredcaps

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Re: ALFA AWU036H repair
« Reply #3 on: November 12, 2014, 11:32:18 pm »
the problem is i cant figure the part number of the chip, the marking on the chip is 1046, google search yields no sure results,
Searching for

1046 16-qfn

yields this

http://www.admiral-microwaves.co.uk/pdf/rfic/AP1046.pdf

I don't know if this the right part, but at least you have a pinout and a circuit diagram for comparison?
 

Offline papabol_24

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Re: ALFA AWU036H repair
« Reply #4 on: November 13, 2014, 05:13:36 am »
Thank you very much sir, checked the diagram and the actual pcb layout on my alfas, this is the exact part, including the pin count and package on google search is a great tip that I have learned from you sir, Thank you.
 

Offline papabol_24

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Re: ALFA AWU036H repair
« Reply #5 on: April 16, 2015, 06:53:47 am »
Hello, I just bought those ap 1046 rf ic from alibaba and after a couple of hot air soldering attempts both of my alfa's are now working, special thanks to retiredcaps for providing the datasheet..
 


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