Hello everyone:

I have a samsung projection tv model no: HCN4727W

The convergence is off as it does not let me adjust blue, and while
red adjusts fine, it is warped at the top and bottom. I pulled the
convergence board, and it appears that the two IC units have been
replaced at least once in the TV's lifetime (I just got the tv and
have no idea of its prior history). Also, the repairman soldered pins
1,2, and 3 of both IC units in line with a resistor (or maybe a diode
I'm not sure), and then connected the resistor to the -20v terminal on
the board. I'm not sure why this modification would be necessary, as
it appears the IC chips are OEM (they're both STK392-040). Anyways, I
was thinking of just replacing the entire unit (board and all) and
seeing what happens. Good or bad idea?

http://www.samsungparts.com/part_det...model=HCN4727W

Mike