iphone 7 audio issue,r1103 necessary? - GSM-Forum

nykocam · 11-29-2018, 11:27

iphone 7 whit audio problems,maked jumper line c12 to r1103 but resistor look's damaged,where i can find another one from old boards?
i have zxw from few days and i dont know how to try to find an component by specific.
thanks for help me.

nykocam · 11-29-2018, 12:56

edit....
r1103 lost

now???

7Axis · 11-29-2018, 16:31

You need the schematics to see where it goes.. I found it for you so view this picture :

https://gyazo.com/803f411ff34c46867658d6ad6f8c03d5

I2S_AP_TO_CODEC_MCLK is an audio protocol data line that goes to U0700(RAM)

Missing resistor will definitely cause audio issues on your iPhone.

The missing resistor is 33.2 Ohms and rated for 30mWatts (1/32W)

Now just look for schematics of your older boards, and find a resistor that has similar or preferably identical values to these that I listed of your missing resistor.

If you have an iPhone 6 board, use R0311 or R0301, same parameters as the one you need, there are many others also.

11-29-2018, 11:27	#1 (permalink)
nykocam No Life Poster Join Date: Jun 2004 Location: sure...not at heaven... Age: 56 Posts: 655 Member: 67494 Status: Offline Thanks Meter: 71	iphone 7 audio issue,r1103 necessary? iphone 7 whit audio problems,maked jumper line c12 to r1103 but resistor look's damaged,where i can find another one from old boards? i have zxw from few days and i dont know how to try to find an component by specific. thanks for help me.

11-29-2018, 16:31	#3 (permalink)
7Axis Freak Poster Join Date: Nov 2017 Location: Canada Posts: 131 Member: 2777379 Status: Offline Thanks Meter: 34	You need the schematics to see where it goes.. I found it for you so view this picture : https://gyazo.com/803f411ff34c46867658d6ad6f8c03d5 I2S_AP_TO_CODEC_MCLK is an audio protocol data line that goes to U0700(RAM) Missing resistor will definitely cause audio issues on your iPhone. The missing resistor is 33.2 Ohms and rated for 30mWatts (1/32W) Now just look for schematics of your older boards, and find a resistor that has similar or preferably identical values to these that I listed of your missing resistor. If you have an iPhone 6 board, use R0311 or R0301, same parameters as the one you need, there are many others also. Last edited by 7Axis; 11-29-2018 at 16:37.

11-29-2018, 12:56	#2 (permalink)
nykocam No Life Poster Join Date: Jun 2004 Location: sure...not at heaven... Age: 56 Posts: 655 Member: 67494 Status: Offline Thanks Meter: 71	edit.... r1103 lost now???