Tacho universal obd function problem

[gijsvm]

Hello,
I have a problem with my tacho pro 2008
I try to do a adjusting of a golf 4 and it don`t work by obd anymore, also a other car doesn`t work by obd.
I try a other car by eeprom without any problem.
Someone knows what part inside the tacho pro(universal) can be damaged ?

[Rito]

Use search...
Had some posts about this..
I think is a transistor is damage.........

[treo]

Use search...
Had some posts about this..
I think is a transistor is damage.........
I think a IC is damage inside.

[gijsvm]

I think a IC is damage inside.

You also know witch ic ?

[almeida]

hello the ic is ic6 from the picture,
i have the same problem that you have and i change the transistor like for the picture.
my transistor is smd and i put a new one bc537 and solved the problem. check ic and transistor. i think is open

[sterling]

I have changed these parts on 2 boxes but they STILL will not do by OBD11