VAG-COM/VCDS EVERYTHING

[bg17aw]

when did you buy ?

Feb. 16 2021

question is if we can identify a bad chip before using it

[flyfvdi]

Feb. 16 2021

question is if we can identify a bad chip before using it

buy a new MIC2920A-5.0WS，SOT22 and change

[flyfvdi]

everyone work

Mega.nz VCDS Hex-V2 VIIPlusLoader-08.021.05 link


1. Support V21.3.0
2. VIIPlusLoader support multi-languages


https://mega.nz/file/05M2iTpZ#TI537M...u7H5n22LjOjE7g

vcds hex-v2 ross-tech english software version is 21.3.0

[StanNB]

buy a new MIC2920A-5.0WS，SOT22 and change

Yes, of course. Buy the "best" cable from fly and after that change some components.
Are u kidding?

[networkers]

buy a new MIC2920A-5.0WS，SOT22 and change

Can someone clarify what the root cause (wrong output voltage?) of this issue is and how can i do a reliable check on my cable?

[jan4]

@ fly mcp next to it too .

[hid3]

Can someone clarify what the root cause (wrong output voltage?) of this issue is and how can i do a reliable check on my cable?

I'd like to identify that too.
I suspect there is a short or some defective component.
Upon plugging device in, it drains excessive current, way over what the voltage regulator is designed for, causing the defective component to blow up as well as the voltage regulator itself.

Telling that "just replace voltage regulator and it should be fine" is nothing but a joke.

I also suspect that STM chip gets fried as well, judging by its discoloration observed in photos posted in this thread.

[networkers]

Upon plugging device in, it drains excessive current, way over what the voltage regulator is designed for, causing the defective component to blow up as well as the voltage regulator itself.

I have done some measuremets with my interface (test bench setup) :

Not connected to USB/PC (yellow blinking): ~110mA at 12.5V
connected to USB/PC (green blinking): ~55 mA at 12.5V

Output pin from MIC2920: 5.01 V

Seems to be ok for me...

[bg17aw]

@ fly mcp next to it too .

what do you mean? MCP chip should also be replaced?

[bg17aw]

Yes, of course. Buy the "best" cable from fly and after that change some components.
Are u kidding?

Exactly... and hope that it will not damage your car CPU or other components in the car...
This is why I am not using it.

If I order the components I have to pay about 20% more than the cost of the cable... shipping and all.

[hid3]

I have done some measuremets with my interface (test bench setup) :

Not connected to USB/PC (yellow blinking): ~110mA at 12.5V
connected to USB/PC (green blinking): ~55 mA at 12.5V

Output pin from MIC2920: 5.01 V

Seems to be ok for me...

Well.. This probably adds to the theory, that the defect is hardware. And you get smoke only 1st time you connect it or never

[StanNB]

That's why I'm using my V1 or V2 with 415 chip. Nothing is burning and no need to change any chips.

[flyfvdi]

That's why I'm using my V1 or V2 with 415 chip. Nothing is burning and no need to change any chips.

different factory and manufacturer

[flyfvdi]

Yes, of course. Buy the "best" cable from fly and after that change some components.
Are u kidding?

ask your seller, check the serial number,

[flyfvdi]

few and individual MIC2920A-5.0WS can not work more than 12V, please ask your seller to confirm.