I have installed an aftermarket head unit in my MY2010 Insignia. The head unit has been working properly for a long time (years), but lately - sometimes it does not switch on. Screen just stays blank.
I have a separate on/off switch for the unit (just in case) and when I switch it, I can hear a soft popping sound from speakers, meaning that the power goes into the unit. Sometimes I can start the unit by pulling the connectors from behind the head unit's display (connected to the unit via a cable) and reconnecting it. And I can start the unit almost every time if I completely take it out from dashboard, disconnect every plug and then reconnect and put it back. It all has started when weather started to get colder. (it was working fine previous winter in -20 C) At first it happened very rarely and all I had to do was switch off the ignition and then restart the car. Now I have to do all sorts of things to get it to work, but when I get it to work, then everything works perfectly, even if I move the wires to check if it has a bad connection. And after getting the unit to work I also can switch it off-on many times and it will switch on every time. But the next day it won't.
(working fine, switching off, not working the next day, although nothing touched or moved in the mean time). Sometimes it can be switched on later, after driving some time.
I suspected a bad connection on the circuit boards, so I re-soldered everything, but no change, still the same behaviour.
So - no connection problem (power goes into the unit), switching off-on wont work when in the morning I discover that again the unit wont turn on, disconnecting-reconnecting everything most times works, disconnecting-reconnecting just the display cable sometimes works. And sometimes it's just working fine from the beginning, however mostly not working lately.
What can be the cause of this ? I know it cannot be some chipset problem, because then it shouldn't work at all.
I have a separate on/off switch for the unit (just in case) and when I switch it, I can hear a soft popping sound from speakers, meaning that the power goes into the unit. Sometimes I can start the unit by pulling the connectors from behind the head unit's display (connected to the unit via a cable) and reconnecting it. And I can start the unit almost every time if I completely take it out from dashboard, disconnect every plug and then reconnect and put it back. It all has started when weather started to get colder. (it was working fine previous winter in -20 C) At first it happened very rarely and all I had to do was switch off the ignition and then restart the car. Now I have to do all sorts of things to get it to work, but when I get it to work, then everything works perfectly, even if I move the wires to check if it has a bad connection. And after getting the unit to work I also can switch it off-on many times and it will switch on every time. But the next day it won't.
(working fine, switching off, not working the next day, although nothing touched or moved in the mean time). Sometimes it can be switched on later, after driving some time.
I suspected a bad connection on the circuit boards, so I re-soldered everything, but no change, still the same behaviour.
So - no connection problem (power goes into the unit), switching off-on wont work when in the morning I discover that again the unit wont turn on, disconnecting-reconnecting everything most times works, disconnecting-reconnecting just the display cable sometimes works. And sometimes it's just working fine from the beginning, however mostly not working lately.
What can be the cause of this ? I know it cannot be some chipset problem, because then it shouldn't work at all.
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