Video-In issue

[yves31]

I had rear camera problem with my RK3188/1GB unit but now discovered that is a general video-in issue.
Rear camera works well when I start the car. When the head unit warms up rear camera video does not show up anymore. The screens shows an exclamation point indicating now video signal.
Today I tested video-in (AVIN) and Front Camera (F-Cam) input, and the same problem happened for both inputs: working when car starts and no signal after warming up.
In all tests, I used an external working video RCA input to make sure video signal is 100% OK.
I believe this is a circuit board problem and but do not know which board is at fault.
Is it coreboard? If I upgrade to another coreboard (8-core/4GB) could the problem be fixed?
Any help is much appreciated.

 

[wingtytn]

I had rear camera problem with my RK3188/1GB unit but now discovered that is a general video-in issue.
Rear camera works well when I start the car. When the head unit warms up rear camera video does not show up anymore. The screens shows an exclamation point indicating now video signal.
Today I tested video-in (AVIN) and Front Camera (F-Cam) input, and the same problem happened for both inputs: working when car starts and no signal after warming up.
In all tests, I used an external working video RCA input to make sure video signal is 100% OK.
I believe this is a circuit board problem and but do not know which board is at fault.
Is it coreboard? If I upgrade to another coreboard (8-core/4GB) could the problem be fixed?
Any help is much appreciated.

I hav the same issue problem I caused where in the advance settings I change it and forgot the one that they used when shipped to me

Sent from my [device_name] using XDA-Developers Legacy app

 

[yves31]

I hav the same issue problem I caused where in the advance settings I change it and forgot the one that they used when shipped to me

Sent from my [device_name] using XDA-Developers Legacy app

This may not be issues in settings. You may press default button in settings to get back to the original settings.
In my case I know it is due to defective hardware and heat caused the video unresponsive to signals. I opened the box, removed built-in dvd to free some space, and installed a case fan to reduce heat. It is better now and I can get video working if the air temperature does not exceed 22C. On a hot day the video still has the problem.