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#2332 - 08/12/15 08:45 PM Sim 1.0 working, Sim Japhar-Ferrari and Sim2 not..
Admin Online   content
Japhar Member
Carpal Tunnel

Registered: 10/19/10
Posts: 9876
Sim 1.0 working, Sim Japhar-Ferrari and Sim2 not working...

One of our members had a problem with his DM800HD, he was using an old Sim 1.0 on his box and wanted to switch to the newer images and so upgraded his Sim. None of the new Sims were working (with ->error message)... and we told him that most probably this was a problem on the motherboard (perhaps not fully supply of Power to the smartcard chip).

He found out that the Sim 1.0 was working with a 2.2v, but when inserting the Japhar-Ferrari Sim or the Sim2 it was dropping at 1.5v... the result seems to be a Transistor to replace.

See photos attached.

Admin

P.S.: More infos, in French, http://www.ourdreambox.com/ubbthreads.php?ubb=showflat&Number=3388#Post3388

Image of Sim card holder / socket connections to Pads:


Attachments
motherboard.jpg

sim1.jpg

error_1.jpg

error_2.jpg

Transistor.jpg


_________________________

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#5694 - 02/11/16 06:31 PM Re: Sim 1.0 working, Sim Japhar-Ferrari and Sim2 not.. [Re: Admin]
Ahmed Basher Offline
stranger

Registered: 02/02/16
Posts: 3
I have same problem can u please tell me which transistor and how please ?


Attachments
image5.jpg

image6.jpg

image7.jpg



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#5701 - 02/12/16 08:53 AM Re: Sim 1.0 working, Sim Japhar-Ferrari and Sim2 not.. [Re: Admin]
Ahmed Basher Offline
stranger

Registered: 02/02/16
Posts: 3
Dear Johnny,

I connect it like this is that fine but its still not working and i donot know why I connect it and it give me 5 volt but still not working please advise

Ahmed


Attachments
image1.jpg

image2.jpg (57 downloads)
image3.jpg

image4.jpg



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#5704 - 02/12/16 11:32 PM Re: Sim 1.0 working, Sim Japhar-Ferrari and Sim2 not.. [Re: Ahmed Basher]
Johnny_B Offline
VIPF Japhar
enthusiast

Registered: 03/09/15
Posts: 218
Loc: Netherlands
The 5v switch for the Sim 5v pin 1 is feed from the Q8 center pin, the drain side.
Check if the print track from the Q8 to the sim card holder is still intact.

Next step is to measure the Q8, or to replace.
That is, if the Q9 is working well, otherwise the Q8 will not be switched.

I think check the values according my measurements at Ohm and diode measurements.

See the image,
Howto check the simcard circuit (Ohm measurement).
Howto check the Q8 (Diode measurement).
Here, Dm800hd simcard issues.
_________________________
Doing nothing leads to nothing.

------------- Please note, for technical support -------------
Will be given here, or on the jb8a8f8 forum and I prefer it in English.
Johnny B.

Click on the banner if you like to go there..

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