NEC Plasma fried PS

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 insight into what the equivalent parts is?


NEC has been unresponsive to requests for a service manual or
schematic.


Thanks all

.

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