Passat b6 sedan - poor FM reception after replacing the radio with non-factory

Hello
I currently have a radio from the Chinese but dedicated 2din on the windows something similar to RNS510, this radio has a fakra antenna output (one but it is) from which I supply 12V as factory-made on the antenna amplifier and the FM receives quite well (on the factory RCD310 is better). Recently, a fairly low price has seduced me to buy a dedicated 2din on Android 6.0. The radio has a standard antenna outlet for a plug. After connecting the radio and connecting the separator only to the white plug (in the car two to the radio, white and beige) and powering the blue cable, the radio receives something there, but very poorly. I got to the rear window where I found from what I read the antenna amplifier (first picture). I took out the white fakra and the meter showed nothing, but the radio stopped receiving, then I took out the second fakra and there was no voltage either. Unplugging the mass also doesn't work.


Later I read that there are still some amplifiers in the side pillars in the car and they look like this


Now somebody tell me which amplifier the radio should give these 12V to?

Hello. Since you disconnected the white cube from the amplifier and the radio stopped playing, I would be interested in it. At the beginning I would check if there is a short circuit in the cable, then I would check the continuity of the cable. These fakras like to cut inside and then there is no signal. Best regards.

I would leave those in the pillars looking at the diagram I have, I think you should look in the antenna from the rear window. In addition, I would review cable TV. best regards

So there should be no electricity in the cables connected to this kind of amplifier?

Hello. There should be 12V on the white plug. Check what we wrote above. Best regards.

korek516 wrote:

Hello. There should be 12V on the white plug. Check what we wrote above. Best regards.

Exactly so, 12V must come otherwise it would not make sense to amplify the signal in this case

So you should review these wires. Alternatively, after connecting the factory VAG radio should spit out a short circuit error of one of the antennas? If there is no current through the wire to the amplifier. Is the easiest way to check for short circuits without removing the wires?

Hello. Yes, after connecting the factory radio. It should give a short to ground error or an open circuit, but this will not remove the fault. You need to measure to make sure what is damaged. The computer can guide us but don't "point the finger" replace it. Best regards.

Wait wait, I found something else .... passat b6, variant?

Cinek_Barczewo wrote:

Wait wait, I found something else .... passat b6, variant?

As in the subject, this is a sedan

Correct if bad data but it seems to me that I thoroughly checked ...

Cinek_Barczewo wrote:

Wait wait, I found something else .... passat b6, variant?

Hello. I see that you are probably "afraid" of the meter? Why do you need information from Elsa? Just take a moment to measure and you know everything. You pride too much. Best regards.

That is why the documentation is to be used, I am not afraid of the meter and I even dare say that I am with him for you brother, best regards

Cinek_Barczewo wrote:

That is why the documentation is to be used, I am not afraid of the meter and I even dare say that I am with him for you brother, best regards

This is how you use it, but not in this case, there is nothing complicated. Well, unless it's difficult to trace hidden elements

The booster is good. After a long examination, it turns out that the antenna cables at the Fakra connector are broken. I bought such a new connector but unfortunately the cable is too thick in the factory installation and the purchased connector fits but the cables from separators. Does anyone know how to earn it correctly and whether it can be done at all. Or maybe it's better to buy a new earned cable and let go of the amplifier?