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Go Back   GSM-Forum > Product Support Sections > Hard/Software Products (official support) > GSMServer Products > Medusa

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Old 03-31-2018, 16:02   #1 (permalink)
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I can't connect any device via eMMC [Answered]


my octoplus pro was working just fine then all of a sudden i tried connecting more than 10 boards to repair using emmc all of the boards weren't connecting its not possible that all the boards are not coneecting so then i opened up a new phone and connected the pinouts and tried connecting using different voltages,bus nothing it keeps just saying "ERROR[001]: Can not connect. No target device present. " i said maybe it from my connection but i tried more that 15 boards and all are the same and its not my first time using emmc so i am 100 percent sure of my wiring so please tell me what is the reason is the box wrecked or what am i supposed to do??
most of my work is using emmc please replay ASAP and help me find a solution.

Last edited by Medusa Box; 04-01-2018 at 16:56.
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Old 03-31-2018, 20:24   #2 (permalink)
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Quote:
Originally Posted by pomgrapes View Post
my octoplus pro was working just fine then all of a sudden i tried connecting more than 10 boards to repair using emmc all of the boards weren't connecting its not possible that all the boards are not coneecting so then i opened up a new phone and connected the pinouts and tried connecting using different voltages,bus nothing it keeps just saying "ERROR[001]: Can not connect. No target device present. " i said maybe it from my connection but i tried more that 15 boards and all are the same and its not my first time using emmc so i am 100 percent sure of my wiring so please tell me what is the reason is the box wrecked or what am i supposed to do??
most of my work is using emmc please replay ASAP and help me find a solution.
First cheak out put voltage 1.8 and 3.3 volt if not then use external power via usb or via Emmc adaptor

Sent from my Redmi Note 3 using Tapatalk
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Old 03-31-2018, 20:53   #3 (permalink)
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Medusa Pro is best for EMMC repair....
Pls give log for error...
And which model was u connect tell me
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Old 04-01-2018, 08:32   #4 (permalink)
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i tried connecting 4 types of models all of them said the same thing the models are ls775,ls770,sm-g530p,ls675. im not saying the box is bad im saying is it possible that my box is not working anymore. because its impossible that more than 15 phones i tried to connect and non of them connected all of a sudden before that it was working normally if it doesn't connect with the output voltage from the box i would plug in an eternal power supply usb and it will connect but this time nothing is connecting at all even using an external usb charger or anything is it possible that my box got wrecked and how can i fix it?
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Old 04-01-2018, 16:15   #5 (permalink)
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here i opened up this phone its working nothing is wrong with it please tell me my connections are wrong or something like that nothing is working at all i tried an external power source raised the voltage and its still not coneccting and this phone is working perfectly normal...
also my log folder where is the support team my box is the best box ever and i have done so much great things with it but something happend all of a sudden and i need help from the best creators of this box.

https://mega.nz/#!qTQTnRgQ!2gj_FTPa9...lJC4r_bMnAc_8U
https://mega.nz/#!zKQzQRxZ!LrsN0mZcc...2O-1r1p0u5La8w
https://mega.nz/#!ySoHlQqJ!Wa5tnYHOI...9DJpeOCqj0g1Cs
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Old 04-01-2018, 16:55   #6 (permalink)
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Hello.

As we see on your photos posted above, You have soldered too long wires! They should be as short as possible - 3-5 CM length only.

Quote:
ERROR[001]: Can not connect. No target device present.
Here are a few main possible reasons why the device doesn't connect:

1. You have connected battery or USB cable. Before connecting the device You must disconnect the battery and the USB cable, and then connect the device without power, this is important!
2. Some wires are soldered incorrectly. Carefully check soldering of all wires.
3. In the process of soldering, the resistors were burned (damaged) by using soldering iron or the pin pads on the board to which wires were soldered were damaged. Need replace damaged resistors and restore the pin pads on the board.
4. The ends of wires that were soldered, had not been cleared. Wire, that comes complete with Medusa Pro Box, is covered with an insulator, so before soldering need to clean the ends of each wire.
5. Soldered wires are too long. Make each wire as short as possible (3-5 CM length).
6. For GND connection use more thicker wire.

Try to connect the device with higher Voltage level (try to set 2.0V, 2.2V) and with different Bus speed values.
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Old 04-01-2018, 16:56   #7 (permalink)
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update my friend sent me a link to a post
Medusa Pro ERROR[001]: Can not connect.
tried everything in there didnt work it said the wires might be to long so shortened the length and tried again same thing.

https://mega.nz/#!DaRSUT7K!_OuXibTMX...feQ9IucK91ul_E
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Old 04-01-2018, 16:59   #8 (permalink)
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Quote:
Originally Posted by Medusa Box View Post
Hello.

As we see on your photos posted above, You have soldered too long wires! They should be as short as possible - 3-5 CM length only.



Here are a few main possible reasons why the device doesn't connect:

1. You have connected battery or USB cable. Before connecting the device You must disconnect the battery and the USB cable, and then connect the device without power, this is important!
2. Some wires are soldered incorrectly. Carefully check soldering of all wires.
3. In the process of soldering, the resistors were burned (damaged) by using soldering iron or the pin pads on the board to which wires were soldered were damaged. Need replace damaged resistors and restore the pin pads on the board.
4. The ends of wires that were soldered, had not been cleared. Wire, that comes complete with Medusa Pro Box, is covered with an insulator, so before soldering need to clean the ends of each wire.
5. Soldered wires are too long. Make each wire as short as possible (3-5 CM length).
6. For GND connection use more thicker wire.

Try to connect the device with higher Voltage level (try to set 2.0V, 2.2V) and with different Bus speed values.
thanks for the replay tried to solder shorter wires same thing i just want you to confirm that its definitely not a hardware issue and i will try as many phone as possible to see if the problem is from my end
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