Nintendo Switch works but nothing on the screen?

[lpoolm]

I have a faulty Switch, it turned on with a backlight but showed nothing, but works when docked.
I swapped the backlight ic now I get no backlight but still works on the tv?
Could I have blown something linked to the backlight? I have not seen this issue before so not sure where to look?
Any ideas would be great.
Thanks

 

[jkyoho]

I have a faulty Switch, it turned on with a backlight but showed nothing, but works when docked.
I swapped the backlight ic now I get no backlight but still works on the tv?

Curious why would you swap backlight ic when you states you already having backlight.
And did you check lcd connector pins inside?

 

[lpoolm]

Curious why would you swap backlight ic when you states you already having backlight.
And did you check lcd connector pins inside?

I have had the issue before and it fixed it