sharp lcd projector auto shutoff

[kahurt]

this is supposed to be the first pic

[diylabs]

Yes that is your lamp ballast. Are you able to extract it out of the projector? That is the safest way to do things and also you'll gain a lot of room inside of the projector by doing that.

I didn't see a link between the ballast and your main board in those pictures - maybe your projector cannot sense when the lamp has illuminated? Of course, the two wires from the power supply board (the 1st picture you posted) to the ballast carry power to the ballast, which is usually in the 300v range, so just unplug that - don't try to modify those wires in any way!

Once you have the ballast removed, take another picture from the top if you're unsure of what you're looking at. Were you able to located any thin wires connecting the ballast to the main board?

[kahurt]

is the entire board the ballast of just the gray box. there are two plugs coming from the board I will post pics of them later today

[kahurt]

here is a picture of the wires goning to the main board

[kahurt]

a closer view of the plugs . the center plug goes to a cooling fan.

[diylabs]

my guess is that the three-wire grouping (brown, black, and yellow) is probably the data link between your ballast main board. If that is the case, then you may be able to trick your projector by shorting the black and yellow wires. If that isn't the correct combo - assuming that these are the correct wires - then just try a different combo. Sorry my help is getting a little shady here, hopefully this technique works for you on the first try.

[kahurt]

those wires go to a cooling fan on the ballast board. I did notice this jumper wire on the board. any ideal what it may be.

[diylabs]

My feeling is that the 4-lead set of wires is probably your data link between the ballast and main board. If that is the case, then I don't know how to help you yet - that's as far as I have gotten with my own projector (don't know what to do using a 4-wire method).

[li_gangyi]

I suppose something happens when u turn it on and the ballast is working properly...trace the wiring back to the relays (the black cubes) you might wanna try activating them to see if the projector responds....

Edit: BTW the relays are those black cubes with DEC marked on them...

[kahurt]

when i plug everything in and turn it on i do here the relay click and then nothing . how do i activate them?