[BimmerSLO]

Has anyone here repaired an ALC module from a E46 coupe or early E60 before? It is the small module behind the glove box. The module does not respond anymore, I am thinking that there is a power supply problem on the module (fuses were ok). There are 3 capacitors on the board. Might one be broken?

[RocketSurgeon]

One of the chief problems for modules from that generation is cold joints caused by the lead free solder. You could test the capacitors, MOSFETS, resistors, etc with a multimeter and replace as necessary. Look for swollen electrolytic capacitors. People have had luck with reworking the boards with flux and a hot air station.

[cursor]

Its problem with dual switching diode. It's supply motorola on board.
Originally is BAV70
I used BAV23C and work good

On foto i mark where is there diode

[huzionet]

Hello, how do you clean the lacquer from a pcb plate?

Best Regards.

[Vojno]

Hello, how do you clean the lacquer from a pcb plate?

I use "Sealant remover" from victor reinz.

[KKKKK]

Its problem with dual switching diode. It's supply motorola on board.
Originally is BAV70
I used BAV23C and work good

On foto i mark where is there diode

How much mA?? 125mA 225mA or 400mA?

Thanks