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i have mitsubishi dlp projection fhd tv wd-57831

and osram ballast control diagaram:
fig7 (page of 5) (in osram site)

i would replace bulb with xenon lamp (for intrest...) and remove original osram ballast replace with 55watt xenon ballast (car ballast).
for suplay 12v i used 12V dc on main power and its ok .. good.

i removed ballast circuit (ballast hasbeen die!) and connected pin 1 to 2 (output optocoopler fooling)

pin1= lamp lit
pin2= GND
pin3= 5vs
pin4= lamp-EN
pin5= DIM

tv 3 atthempts to power on then shutdown and fixed red led in panel
error code: 61 => no lamp enable recived DMD (light Engine dvi cable to dmd)

one optocoupler is output from ballast. (i connected pin1&pin2)
2 other optocouplers are input! ?!!!
please help me... thank you ...
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