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 Post subject: Re: Samsung HM502JX USB Only?
PostPosted: August 17th, 2017, 3:44 
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Joined: September 8th, 2009, 18:21
Posts: 9604
Location: Australia
You should be connecting to the MCU end of each capacitor rather than the bridge end.

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 Post subject: Re: Samsung HM502JX USB Only?
PostPosted: August 17th, 2017, 4:11 
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Joined: August 16th, 2017, 15:36
Posts: 7
Location: Germany
Hm,
I do unsoldering the caps. My solder points are on the side towards to the chip. So I can test the connection from one leg of the chip into the wire of mine.
Is this wrong?
I thought I need the function of the chip?

Greetings from Germany

Heinz


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 Post subject: Re: Samsung HM502JX USB Only?
PostPosted: August 17th, 2017, 4:20 
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Joined: September 8th, 2009, 18:21
Posts: 9604
Location: Australia
Code:
                                              ||
<USB host> --- USB cable --- <bridge IC> --Y--||--X-- SATA Tx/Rx -- <MCU>
                                              ||
                                           capacitor

Solder at "X", not Y.

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 Post subject: Re: Samsung HM502JX USB Only?
PostPosted: August 17th, 2017, 5:08 
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Joined: August 16th, 2017, 15:36
Posts: 7
Location: Germany
Dear fzabkar

Please take a deeper look at my first photo:
http://forum.hddguru.com/download/file.php?id=14573&mode=view

Here you can see I am at the first solder point towards to the chip. Are you with me?

Best Regards,

Heinz


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 Post subject: Re: Samsung HM502JX USB Only?
PostPosted: August 17th, 2017, 15:12 
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Joined: May 21st, 2007, 16:10
Posts: 1423
Location: Gothenburg/ Sweden
krischeu wrote:
Thank you for your response.
What do you mean, I am at the wrong end?

Here you are...


Attachments:
IMAG0296.jpg
IMAG0296.jpg [ 1.25 MiB | Viewed 277 times ]

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 Post subject: Re: Samsung HM502JX USB Only?
PostPosted: August 17th, 2017, 15:16 
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Joined: August 16th, 2017, 15:36
Posts: 7
Location: Germany
OK,
so the chip is responsible for USB not for the serial? Than, yes I am at the wrong side ... You are right.


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 Post subject: Re: Samsung HM502JX USB Only?
PostPosted: September 9th, 2017, 9:52 
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Joined: August 16th, 2017, 15:36
Posts: 7
Location: Germany
Now is is working.
Attached a foto with good quality.
Yellow cable is not connected.


Attachments:
P1310171.JPG
P1310171.JPG [ 4.32 MiB | Viewed 98 times ]
P1310170.JPG
P1310170.JPG [ 4.38 MiB | Viewed 99 times ]
P1310169.JPG
P1310169.JPG [ 4.55 MiB | Viewed 99 times ]
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