Mobile FC-screen problem??

[DyO]

when i turn on my FCM,the game starts normally,but when i change the cartridge (u know,turnoff-change-turnon)and the screen got some verry strange color palette
Blue-Green
White-White
Red-Blue
etc.
i "fix" it with a restart from the switch   

[133MHz]

Try pressing the screen bezel along its edge and see if you can make the patterns vary, in that case the flex cable which connects the LCD to the mainboard could be loose.

On the other hand it sounds like a dirty/loose cartridge connector. Give that a go first.

[DyO]

Try pressing the screen bezel along its edge and see if you can make the patterns vary, in that case the flex cable which connects the LCD to the mainboard could be loose.

On the other hand it sounds like a dirty/loose cartridge connector. Give that a go first.

can't press it! have u seen famicom mobile?
the LCD is strange attached to the thing
i cleaned it up
still
maybe its because of non-stop playing?