Successful HP dv6000 black screen fix. Heated video chip with heat gun for 5 min then put in preheated oven at 385 degrees for 8 min. All good now.
After a water damaged phone is revived, you may have a dim display. If so, the backlight coil needs replacing. This is a micro solder job using combination of a small soldering iron and hot air. This phone works great now. Here is a pic of coil removed and one after replaced.