Maker Pro
Maker Pro

Samsung rear projection TV.



Jan 1, 1970
Model # HC-P4252W, Chassis # P59A, customer was into the service menu.
He said he psessed a button, while in the service menu, then a single
crosshatch came up with factory
data, then it wouldn't work right after. Now, after repairing the unit
for bad convergence IC's,
& open resistors, when pressing "self focus", it stops, right after
it starts, & says "check
factory data". How do I undo this! Also, now the "saved" convergence
adjustment in the service menu, "drift". After tv is off a while, the
left, & right sides need to re adjusted manually again. Dani.


Jan 1, 1970
The DAC is mounted to the Signal board on most of these sets, make certian
you don't have any coolant leakage on the signal board. Also confirm good
quality connections between the DAC and Signal board. The registration data,
once it has been properly saved, should not drift
He owes you $200 to get the set back now, tell him it is $400 for the
full job.

Samsungs' service menus are not very friendly, and he probably reset
it to pre-alignment facotry default data. He shouldn't have been in
there. He pays, either that or take your parts out and send him on his
way. If you are an ASC you should have the info to do a full
alignment, if an independent you better have some time on your hands.

Take his money and let him go figure out what he screwed up. The
circuit has been repaired.

On any three CRT based RPTV that has self focus, magic focus, flash
focus or anything of the sort, there are sensors around the screen. As
such, geometry settings are very critical. If he lost those, even if
you are not seeing any major geometry problems, you might have to buy
the overlay to get it right.