The power supply is made by Coretronic, who I found coupled with Optoma on some DLP patents. I think they all really are sudonyms for "Made in (a grass hut in)Taiwan".
It has a 3 wire connector (green, white, black) going to the main board.
The circuit board connection for the green wire is labeled ON/OFF.
From my reference material for the PC ATX power supply:
Power Good Signal
When the power supply first starts up, it takes some time for the components to get "up to speed" and start generating the proper DC voltages that the computer needs to operate. Before this time, if the computer were allowed to try to boot up, strange results could occur since the power might not be at the right voltage.
Note: For anyone experiencing "strange" or intermitant start up problems !!
Pin | Name | Color | Description
8 | PWR_OK | Gray | Power Ok is a status signal generated by the power supply to notify the computer that the DC operating voltages are within the ranges required for proper computer operation (+5 VDC when power is Ok)
13 | COM | Black | Ground
14 | /PS_ON | Green | Power Supply On (active low). Short this pin to GND to switch power supply ON, disconnect from GND to switch OFF.
18 | -5V | White | -5 VDC (2002 v1.2 made optional, 2004 v2.01 removed from specification)
/PSON activated by pressing and releasing the power button while the power supply is in standby mode. Activating /PS_ON connects the power supply
Note: Since the PS has no power button, this is confusing. Activating means connecting /PSON to Ground.
Added: disconnecting cable keeps power supply in "sleep mode". But merely jumpering green to
black doesn't wake it up. (i.e. turn on the PS fan.)
Not sure why, but not worth pursueing.
Next step is to find out what turns the lamp on, and check the lamp.
Can I Test the lamp in a Samsung HLR6178W DLP TV?
Editor’s Note: Should apply to any DLP TV using a ballast.
No, because it is mercury vapor lamp unless you build a power supply with enough voltage to fire the gas.
Can I test the Lamp Ballast?
How Many volts should be being supplied by the two pin connector to the Ballast?
Editor’s Note: Question is ambiguous – “by” and “to” conflict.
Editor’s Note: ambiguity is resolved. Output is to the lamp. (about 65 volts)
About 300vdc on the input.
DO NOT MEASURE THE OUTPUT UNTIL A LAMP IS LIT AND STABILIZED.
IT WILL BLOW YOUR METER WITH OVER 3000V!
You can remove the lamp, turn on the TV and listen for the spark gap. If it goes tick tick tick, the ballast is is good.
That's all folks.