CurtPalme.com Home Theater Forum

[thephantomlord]

Hi Guys,

Last night I finally got my XG 110 mounted on the ceiling. Before I mounted it everything had been working fine but now it's sporadically getting an FC error and then shutting down. Sometimes it will go ten minutes without issue then shut off or sometimes I'll turn it on and then almost immediately shut down. In either case it almost always comes right back on by itself.

Any thoughts?

thanks, Aaron

[macgyver655]

This must be the NEC error of the month. FC is +15v down. Your's sounds more like a poor connection somewhere though. Try reseating the boards in the cage.

[thephantomlord]

Thanks for the suggestion unfortunately it didn't seem to work. It's still shutting down. It is also alternating an F2 error with the FC error. I'm not sure if it was also doing this last night.

[macgyver655]

Oh, lucky you, not really. F2 is video decoder circuit error. Problem is the video out board does alot of cross communication with the gain and system board along with the HV board. You can try pulling the video board and see if the codes change but chances are your going to have to send Curt a bunch of boards to test if you dont have any spares.

[macgyver655]

A slim chance the FC is causing the F2 so if you try eliminating the FC by disconnecting some boards, maybe C,F and A and C conv and see what happens.

[thephantomlord]

hi all,

macgyver thanks for the help.

Just wanted to let everyone know I was able to solve the issue with Doug's help.

It turns out I had the brightness set too high (83%) and it was probably causing some of the boards to overheat. This was causing the alternating FC/F2 errors. As soon as I lowered the brightness down to 50% it fixed the issue and it's now running fine at 60%.

thanks Doug

Thanks, Aaron

[macgyver655]

Congrat's. See, sometimes it is just something simple. I'd be interested in reading those PM's to see how that conclusion was found. How many days has it been running error free?

[kschmit2]

[macgyver655]

Correct but default settings would change a bunch of things and wouldn't pinpoint it directly to brightness. There had to be more to it.

[rickycleung]

It is unusual to set brightness at 83%. Curious to know why you set it so high?

[thephantomlord]

Hi All,

By popular demand here are some excerpts from my troubleshooting with Doug.

1) Turn down the contrast to 20% and see if it will stay running no change
2) Reduce H amplitude and see if it will stay running no change
3) Reduce V amplitude and see if it will stay running no change
4) Increase V amplitude and see if it will stay running no change
5) Send video only and see if it will stay running. (disconnect rgb) Running with video only seems to work. It stayed on for close to an hour before I finally shut it off.
6) Check the top of the rear mother boards for a loose screw 6 & 7) I haven't been able to locate any loose screws but I did lose one a month or so ago when swapping out the tubes so this may have started my problem.
7) Look around the drive boards for a loose screw
8) disconnect and reconnect the wire loom connectors from the power supply Any suggestions on unplugging the connectors from the power supply? I can't seem to get them disconnected by hand.




Take a look at the kelvin settings (hit the kelvin button) this will bring you to temp, set to 6500. If you hold the CTL button down and hit R-G or B it will go into each W and B setting. This can be set different for each input. Compare these from the video input to the RGB input signals.

A lit raster is in the white balance procedure and usually the setting are set to high (or brightness is) so you will need to understand what everything does. Curt has his procedure posted for the XG so you might check that out and see if your running to hot on the RGB input. That is what it sounds like to be. As a reference brightness at 60 the back raster should just shut off. Check the video input then check RGB.

I have seen to high of settings shut a projector down before, its the protect 1-2 circuits on the HV board but will usually give a FD error. In some cases it can overheat the projector and cause a shutdown and in other cases overheat a neck board heat sync and give a FC if the IC video amp chip overheats. Im guessing it may be to high of settings or the signal coming in is wrong (sometimes component RGB will shut it down) if you try to send that to the projector instead of RGB.

Might try to lower or match what the video input is running and see if it will stay running both in kelvin and in the W/B settings.
Not easy to advise if I dont see or hear what the projector is doing but will give you something to check

At this point since I also checked the brightness for the current RGB input and lowered it to 50%.

I can't remember exactly why I'd set it so high but low and behold that was the issue.

Aaron

[dropzone7]

Sounds like you got very lucky. I would start looking for spare system, oscillator and video boards if you plan to keep the projector for a while. I just went through the whole system board failure nightmare myself.

[thephantomlord]

Thanks Dropzone

Well just when I think I'm out of the woods I've got a new problem.

The red tube has suddenly gone blank. No output from it whats so ever.

Anybody have any thoughts? Did the neck board suddenly go bad? I checked for loose connections, etc and the system does not have any error codes.

[dbaisey]

Check the red RGB input cable but I think you found the weak component. You can swap the neck boards to see if it stays on the red. Also do you have menu's on the red? Doug

[dropzone7]