voltage to ballast

[soulscapex]

well i was hoping to get ansers on my other questions so i downloaded the repair manual ..

and i still cant figure this out.

so my question is ther is a blue and brown wire coming from teh power suppy to the ballast....
on a samsung hlp5063wx , now i took a meter and i only show 180 volts on the brown when the tv fires the bulb....... and then when it shuts off it drops to 0.. i show nothing on the blue wire.

can someone please tell me how i can tell if this is a bad power supply or a bad ballast. what is the correct voltage on that wire .for the ballast to fire the bulb.


like i said in my other post the tv will come on and work with pic and sound for 5 mins then shut off the just the bulb....... fans still run. then it waits 5 mins with 3 flahsing lights and shuts the whole tv off.

i dont have the money to just buy a new ballast and a new power board do ......if anyone could tell me a way to go here......

id appreciate it so much.

[BYO]

The Ballast needs to receive 350V from the power supply. And the voltage from ballast to lamp varies depending how consumed is the lamp form 20V-125V. Lamp ignition pulse voltage is about 5Kv to 15Kv.

If you have a reading of 180V from power supply to ballast than the power supply is not sending the voltage that ballast needs and you will need to replace it.

[bmod28]

I HAVE THE SAME DEAL ON A 5075S HAVE 329VDC FROM POWER SUPPLY AND BULB WILL NOT LITE AT ALL. IS 329VDC WITHIN SPEC?

[danieltx]

I may be wrong, but I think the blue wire is ground. The voltage on my 5065W should be 380 VDC.

Reminds me of the opening scene to a Mel Gibson/Danny Glover movie. :)


-Daniel

[grayfox]

LOL :lol: