Android TS-4G Opel insignia Tuner 7786AF-3

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amnesia106

Member
Feb 27, 2021
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Hi guys, I have a Android head unit called TS-4G and drive an Opel insignia. (This one https://a.aliexpress.com/_vdJ8NX ) - how can a find out which hardware platform it is?! I think it’s very similar to the px5
I replace the original radio with the Android one, but the radio signal is worst. Dump sound, no signal, no AF. I put a amplifier between the radio and my two car antennas, connected over fakra connectors. The amplifier is powered up with 12v (phantom) with amp I have very low signal, without nothing, so I decided to put my Orginal Radio back in. Now i look why is the signal so bad. I opened the Android head unit and check the reciever. There is a 7786AF-6 build in. Now is the question, replace it with a 6686 or not... ?! Or, how can i improve the signal strength.
Btw. gps, canbus, steeringwheel remote, LTE works nice. Only the fm tuner sucks...
 

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droidmanuser

Senior Member
Sep 27, 2017
94
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Here some informations about this head unit
Exactly same unit here. Cause bad fm/am signal receiption I gave up and installed a dab+ dongle with new active shark roof antenna. It supports GPS, FM/AM and DAB+ . GPS, FM/AM has good signal receiption now, but DAB is not working well. There are some device interferences, too and I have to check the cables at back side again.

Btw, the PX5 headunit was much better.... (I've got an accident with my opel astra h 😭 )
 

amnesia106

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Feb 27, 2021
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I have a dab+ usb module too, but with a window antenna. In my location in middle germany i have with this antenna worst signal too. 100 meters good signal, next 100 no signal... 🤯
How you replace the orginal shark antenna? The orginal shark is in my case the gps one. How you connect gps, and fm with this one antenna? New cables to the antenna, or can use the old one?
 

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droidmanuser

Senior Member
Sep 27, 2017
94
7
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Lower Saxony
I have a dab+ usb module too, but with a window antenna. In my location in middle germany i have with this antenna worst signal too. 100 meters good signal, next 100 no signal... 🤯
How you replace the orginal shark antenna? The orginal shark is in my case the gps one. How you connect gps, and fm with this one antenna? New cables to the antenna, or can use the old one?
some parts in the trunk that can prevent the roof lining from lowering must be removed. otherwise it is almost impossible to access and loosen the screw on the antenna. it's a very fiddly business, I couldn't loosen the screw on my antenna on my own and had to go to a workshop (and I really do a lot on cars.)

The original gps cable can be used again with the new antenna, for fm / am and dab a new separate cable must be pulled forward to the glove compartment. adapters may be required on the radio and dab module.

all in all, it is quite doable, but takes a lot of time. the biggest problem is loosening the old antenna and ensuring that there are no kinks in the roof lining. and make sure to disconnect the battery before converting.
 

amnesia106

Member
Feb 27, 2021
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But, it is possible to change the hardware (7786 to 6686 tuner?) the 2nd one is an digital fm tuner - pin out and size are the same. I read on some another threads, that ppl swap these fm tuners...