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Old 11-17-06, 04:51 AM   #136 (permalink)
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Originally Posted by star882
Instead of trying to find the lines inside, why not use a chip that converts SPI (which is SDIO compatible) to USB?
http://www.maxim-ic.com/quick_view2.cfm/qv_pk/3639
That would be a good alt. if the usb host thats on the cpu cant be used, personally i like having my sd slot open for mem. cards, and my cf card open for extras.
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Old 11-17-06, 12:45 PM   #137 (permalink)
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The board arrived at my house this morning. :) Unfortunately, I'm still at work, so we'll all have to wait until Monday when I can bring it in to work and use the SMT reflow equipment to start to de-populate the unit. :approve: But not before I check it to see if I can fix it for Adamabrown first.
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Old 11-17-06, 12:59 PM   #138 (permalink)
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Ok! :approve:

What is the PDA problem? What model is it?

Do you have tools to depopulate BGA chips?
(I read it can be done with a domestic oven )

Will you use other techniques rather than a lot of continuity measurements?
(x-rays,.... )
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Old 11-17-06, 01:12 PM   #139 (permalink)
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I got a private mail from a guy having a Acer N50 with broken screen.
He was in the hope of using it with an external screen

Because N50 is PXA270 based and USB HOST READY I asked him for a set of internal pictures.
I do not know if can be useful, who knows...
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Old 11-17-06, 01:38 PM   #140 (permalink)
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Originally Posted by afarre
I got a private mail from a guy having a Acer N50 with broken screen.
He was in the hope of using it with an external screen

Because N50 is PXA270 based and USB HOST READY I asked him for a set of internal pictures.
I do not know if can be useful, who knows...
You can get all the internal pictures for the N50 and ANY other PDA that has either BT or WiFi at the FCC website. All you need it the FCC-ID number and this URL: https://gullfoss2.fcc.gov/prod/oet/c...ericSearch.cfm
Just ask him for the FCCID number.

Select the 'Detailed' link and whatever info you want afterwards :approve:

As for the tools needed to remove the BGA chips - I work in an engineering design centre. I have all the tools I need to 'play' with the X51v board on loan from Adamabrown.
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Old 11-17-06, 01:59 PM   #141 (permalink)
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Originally Posted by bigbop
You can get all the internal pictures for the N50 and ANY other PDA that has either BT or WiFi at the FCC website. All you need it the FCC-ID number and this URL: https://gullfoss2.fcc.gov/prod/oet/c...ericSearch.cfm
Just ask him for the FCCID number.

Select the 'Detailed' link and whatever info you want afterwards :approve:

As for the tools needed to remove the BGA chips - I work in an engineering design centre. I have all the tools I need to 'play' with the X51v board on loan from Adamabrown.
You are right!, I forgot I read it from you at other thread about VGA to TV converter . I am going to ask him for the number.

Did you do same FCCID number check for Axim?
Can you post any link?
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Old 11-17-06, 03:50 PM   #142 (permalink)
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Originally Posted by afarre
You are right!, I forgot I read it from you at other thread about VGA to TV converter . I am going to ask him for the number.

Did you do same FCCID number check for Axim?
Can you post any link?
Just check the X50v FCCID number of NM8HC3U. NM8 is the 3 char customer code and HC3U is the product number. What I do is just enter the customer code to see how many products exist in that category. You can get TONS of info, including schematics (sometimes) from the FCC site.

Of course, we wouldn't need to do all this if someone was able to get a complete copy of the report 142-041108-1c at http://www.teardown.com/channels/pda...Axim_X50V.aspx - too bad they want $3000 for it

Last edited by bigbop; 11-17-06 at 04:15 PM.
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Old 11-17-06, 06:06 PM   #143 (permalink)
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I found the N50 FCC ID seaching the web: HLZN50

This is the Fcc documents page:
https://gullfoss2.fcc.gov/prod/oet/c...39;HLZN50'

And this is the document for internal pics:
https://gullfoss2.fcc.gov/prod/oet/f...ive_or_pdf=pdf

But small IC names are not readable, so I will ask again for better pictures.

Last edited by afarre; 11-17-06 at 06:09 PM.
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Old 11-17-06, 07:31 PM   #144 (permalink)
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Originally Posted by bigbop
Just check the X50v FCCID number of NM8HC3U. NM8 is the 3 char customer code and HC3U is the product number. What I do is just enter the customer code to see how many products exist in that category. You can get TONS of info, including schematics (sometimes) from the FCC site.

Of course, we wouldn't need to do all this if someone was able to get a complete copy of the report 142-041108-1c at http://www.teardown.com/channels/pda...Axim_X50V.aspx - too bad they want $3000 for it
maybe we could tell them our cause and ask them for the info based on the usb host 1 and offer to let them add it to there report if we find anything usefull.

its worth a shot at least.
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Old 11-17-06, 09:19 PM   #145 (permalink)
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Originally Posted by lucidix
maybe we could tell them our cause and ask them for the info based on the usb host 1 and offer to let them add it to there report if we find anything usefull.

its worth a shot at least.
They don't reverse-engineer stuff. They tear stuff apart, find out how much parts cost, determine if the manufacturer could be losing money (like Sony on the PS3) sell the reports to competitors so they know how their products compare. It costs alot of money to teardown something. Many companies would rather pay $3K for a report rather than $10K to have their staff do it.
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Old 11-19-06, 12:28 AM   #146 (permalink)
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Originally Posted by bigbop
Of course, we wouldn't need to do all this if someone was able to get a complete copy of the report 142-041108-1c at http://www.teardown.com/channels/pda...Axim_X50V.aspx - too bad they want $3000 for it
Hmmm... somebody must have a "PDAs & Personal Appliances Channel license" that would allow them to access that info. There's a login link right on the website in case anybody wants to test it out....
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Old 11-19-06, 08:23 PM   #147 (permalink)
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Originally Posted by new2axim
Hmmm... somebody must have a "PDAs & Personal Appliances Channel license" that would allow them to access that info. There's a login link right on the website in case anybody wants to test it out....
They DO provide a bill of materials (BOM) to Electronic Products Magazine for a number of products (but not the Axim): http://www.electronicproducts.com/whatsinside/
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Old 11-21-06, 11:17 AM   #148 (permalink)
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OK - I received the X51v board finally and I'm looking at it. It will take me a little while to check this out and I'm taking pictures and making notes as I go through this so please bear with me as it's also starting to get busy where I work - you know - real work. ;)

I also found this interesting link on a Chinese(?) "Programmers United Development Network" website:
http://www.pudn.com/downloads51/sour...4%CB%FB&kw=USB
And Google can translate it:
http://translate.google.com/translat...lr%3D%26sa%3DN

Last edited by bigbop; 11-21-06 at 11:20 AM.
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Old 11-21-06, 05:56 PM   #149 (permalink)
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So do any of you have any background in electronics engineering or anything similar? I dont see this being fruitful at all if not.
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Old 11-22-06, 02:31 AM   #150 (permalink)
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Originally Posted by radish28
So do any of you have any background in electronics engineering or anything similar? I dont see this being fruitful at all if not.
i believe bigbop stated a few pages ago that in his company, they put together PCB boards and use the same type of surface mounting technology that HTC used to build the Axim... i mean dell ...

and bigbop also left me with the impression that he could not only pull the chip off of the board with the equipment at his workplace, but also, if so inclined, put it back on.

though doing so would be a great feat of patience and testing (to ensure it's placed right on the board) which i don't think bigbop is willing to do. so, we wait. in the wings, secretly hoping he can't resolve whatever issue it is that's plaguing the board, so we can butcher it for our own personal gain :D
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