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my tacho works good but both the FIS and the autocheck don't work, what can be the problem? all connectors are connected... it's been this way since I've bought the car!

Hello.
So as I understand , both - autocheck and boardcomputer don't work? I guess my friend had the same problem when he bought his 200 20v. I'll try to ask him

Ignas.quattro hat geschrieben:Hello.
So as I understand , both - autocheck and boardcomputer don't work? I guess my friend had the same problem when he bought his 200 20v. I'll try to ask him

yes you understand correctly, thanks a lot maybe it could be the answer to my problem!!!

Ok , so he told me that the resistor(in the pics) was not working(burnt) and the condenser was dried out or something. Here they are in the pics(sorry for the quality , weren't taken by me)
http://domas.hard.lt/Audi_200/suo%20ir% ... %20004.jpg

http://domas.hard.lt/Audi_200/suo%20ir% ... %20005.jpg

Ignas.quattro hat geschrieben:Ok , so he told me that the resistor(in the pics) was not working(burnt) and the condenser was dried out or something. Here they are in the pics(sorry for the quality , weren't taken by me)
http://domas.hard.lt/Audi_200/suo%20ir% ... %20004.jpg

http://domas.hard.lt/Audi_200/suo%20ir% ... %20005.jpg

ok thanks I will look into that, I'm not that good with electronics both I hope my collegues can help me out!!

Hello,

the shown source of defect is only one possible cause.

Currently I have a tacho in repair, which has definitively a problem on the main pcb.

If I find the error, I will inform you.

best regards

Gerhard

thanks a lot everybody...

but if I understand correctly there are multiple causes for this defect?

isn't better to find a good working tacho or is repairing the best option?

The_saint hat geschrieben:but if I understand correctly there are multiple causes for this defect?

Yes!
* resistor / condenser on AC PCB
* broken soldering general (problems eg Speedometer, glowing controllights)
* only BC without function can be a defect of voltage regulator
* undefined error of main PCB (I´m searching for a solution)

isn't better to find a good working tacho or is repairing the best option?

All old tacho can have problems with soldering or defect condenser. So there is no guarantee that the "new" tacho works for a long time.

In my opinion it is better to repair the own tacho.

greetings

Gerhard