A friend has two large Plasma screens with burned out power supplies.
He's a Broadcast Maintenance Engineer at a 24 hour news channel and can
fix any electronic equipment if he has a schematic or can identify the
parts.

These units are NEC PX-42VP4A

Does anyone have a schematic, service manual or insight into where to
get the following part, BLQH, which looks like a surface mount
transistor or does anyone know what the equivalent parts is?

Thanks all