[SOLVED] faulty power board CDJ-900

I have a unit that turns on sometimes, then other times, it will not power up.

I have isolated the problem, and it is on the power board. i can do component repair, but this one just eludes me.. It's one of those "tap here on the power board,and the unit may or may not power up" type problems.

Who should I contact to purchase a new board for this unit?

Thanks!