Google the skinny dip part number for a spec sheet to get an idea
* Numbers on part (3 lines):
OZ960D
0432B1
V44502.4
So, please let this ignoramus know name of manufacturer ns the part
number.
of what the ckt could be. If the lamps don't light up (power lamp
blinking) then a.) look for the on board fuse from the
primary regulator to the cfl supply. b.) substitute a
working cfl from another display. play games to determine which
one is bad as a bad lamp will keep the whole display dark.
* The transformer that drives the CFL has only one winding for primary,
driven by FETs from existing 22.5V supply (so fuse is OK), but no signal
to gates of the FETS; the 20-pin skinnydip has no measurable voltage on
any of the pins - making parts in that area suspect.
Too much complexity in that area for reasonable quick "schematic"
scribble from layout.
c.) I saw someone in S.E.R. rigged up a neon bulb with a bunch
of (1 - 10) meg resistors to simulate same. Can't have too much
lamp current OR too much/too little lamp voltage or it won't
* with no drive to the CFL xfmr, this seems useless.
light up. Take note of the polarity of PWR GOOD from the main
* ??power good?? this is not a (shrunken) PC supply in the flat panel
monitor.
regulator and voltage levels off the other regulator ckts on
the display processor board as they may be checked with a
comparitor locally and temper the state of the PWR GOOD.
Do you see an image if you shine a flashlight to the
screen? Yes probably cfl supply problem.
* Image can no longer exist, as i ripped out the LED/polarizer matrix
"sheet" and its drivers; all i am looking for is a nice diffused light
source.
Have done this before with great success, but those used the standard
12V supply Royer CFL circuit (they also did not initially work, but
logic was easy to fix).
