CurtPalme.com Home Theater Forum

silverter · Joined: 23 Dec 2011 Posts: 12 Location: Ulm, Germany

Dear all,

I'm new to CRT projectors but have been actively reading this forum for over 1 year before I finally got myself a CRT projector 6 months ago. I had it setup properly using the valuable information on this forum and I had to say thank you all for sharing your experience.

The joy of the new projector did not last long. Tonight as I was watching some videos, the projector decided to die on me. I have it connected to a HTPC on port 3 using a HD fury @ a resolution of 1280x72072Hz and it's been running fine till today. During setup I made sure that the raster is centered on the phosphor and not hitting the edges on the non cooled phosphor areas.

Tonight I had it running for about 40 mins then suddenly the red tube just went off. It faded away and just switched off. No red anymore. Totally puzzled and trying to find out what went wrong, I had to helplessly watch the green and the blue tubes to also fade away and go totally black as well. I proceeded to turn to projector off and then restart it again to no avail.

When I start it, all the green LEDs are on, the red ones are off, the fans are running, but, the tubes are not litten up there's no picture displayed.

What could be the problem? Where can I start to look into this.

Any advice would be helpful.

Thank you for your time and best regards,

//Eric

draganm · Joined: 08 Mar 2006 Posts: 8990 Location: Colorado

well Curt would know, but it sounds like a high voltage issue possibly. If it's the splitter or quad then they're not that easy to find cuz it's a popular item. You might be better off just buying a second Cine 7 and using it for parts to keep this one running.
One on e-bay now for 100 bucks in Atlanta

**Curt Palme** · Posted: Thu Jan 12, 2012 12:27 am Post subject:

No, if the EHT shutdown red LED isn't on, then that's most likely not it.

You need to see if the filaments are glowing at the back of the tube necks. Do you hear the HV crackle when you turn the set on, indicating HV?

silverter · Joined: 23 Dec 2011 Posts: 12 Location: Ulm, Germany

Thank you for your replies.
@Curt: let me check that this afternoon when I'm, back at home from work and I'll come back to you.
@draganm: Buying one from e-bay and using it as spare parts is certainly an option, especially for that price. Though I'm afraid that shipping that beast from Atlanta to Germany might not be an option for me.

Best regards,

//Eric

draganm · Joined: 08 Mar 2006 Posts: 8990 Location: Colorado

silverter · Joined: 23 Dec 2011 Posts: 12 Location: Ulm, Germany

Good evening everyone!!

@draganm: thank you for the advice regarding the profile. As you can see on my profile, I actively joined the forum only a couple of weeks ago even if I've been reading for over a year, and I have not come to fill in my profile yet, so please bear with me. And thank you for the offer regarding the spare parts. I think I first need to find out what is wrong and which spare parts I need and I'll certainly come back to you.

@curt: I just turned on the projector and yes the filaments at the back of the tubes are glowing. I can also hear some kind of crickets sound when it starts, is that the HV crackle you mentioned? I also went through the following document http://www.curtpalme.com/Troubleshooting_Tips_Barco1.shtm but being a newbie, I believe I've misunderstood something.

To summarize, following is the situation:
The unit powers up, the fans are running, all the green LEDs on the front are litten up and the other ones have the following status:

On the other hand, I made another photo of one of the many boards (please forgive my ignorance) where I have one red LED blinking - I hope you can recognize which one it is on the photos. That LED is labeled CYCLES, next to the POWER LED which is green and all the other ones are off.

Where to go from here ?

Thank you for you time and best regards,

//Eric

Decibel · Joined: 31 May 2007 Posts: 904 Location: Roma - Italia

I see lit the red led of "Hold down HD".
According of Curt's Layout and setup tips: "The hold down HD is a shutdown of the HTHD supply. This can be caused by the deflection board or by a bad focus board."

**Curt Palme** · Posted: Fri Jan 13, 2012 12:30 am Post subject:

Is that SF Light on solid, or very dim? It looks a lot dimmer than the green ones, or is that just the camera?

If it's on, check the two red LEDs on the deflection board. One or the other should be lit. Check the red/blue and yellow/brown yoke connectors on that board to make sure one isn't installed 1 pin off. If you haven't played with the yoke connectors, then that won't be an issue. Instead, check the solder joints on the bottom of the yoke connectors on the PC boards. Let me know which LED is on..

silverter · Joined: 23 Dec 2011 Posts: 12 Location: Ulm, Germany

Hello again,

Curt, I just checked again, and the SF LED is definitely OFF, I think I had a mistake in my other by writing that it's on. All the red LEDs on then front are off. I'll check the yoke connectors later on and let you know, but since I've not touched them before, I don't think that should be the problem. I'll also look into the solder joints on the bottom of the yoke connector... I hope I understand what you mean, I'll make some more photos and post them here if that is ok.

Thank you and best regards,

//Eric

silverter · Joined: 23 Dec 2011 Posts: 12 Location: Ulm, Germany

Good evening,

I've proceeded to check the LEDs on the deflection board and none of the two RED LEDs is on. As mentioned above, the SF LED in the front is OFF. The two RED LEDs on the deflection board are labelled as follow:

They are both off.

I also checked the fuses (5 of them) on the main power supply and they seem to be OK (this means, there is continuity).

What gives?

Thank you for your assistance.

Best regards,

//Eric

**Curt Palme** · Posted: Fri Jan 13, 2012 8:23 pm Post subject:

OK, that's pretty much all the checks you can do at your end. There are no error LEDs within the set, so your problem is most likely the power supply tray under the lenses, or the RGB input board that slides out the back. I can test/repair them if you want, unless you find another set in Germany to rob parts from. THere are not a lot of Cine 7s out there, that use a later board version than most of the more common 708 sets. A 708 board may or may not work in a Cine 7 depending on the vintage of both sets.

Cheers!

silverter · Joined: 23 Dec 2011 Posts: 12 Location: Ulm, Germany

Thank you for the quick reply. Do you happen to have a service manual for this set that would talk me through un-mounting the power supply unit and/or the RGB input board so that I can send it over (if necessary) or in case I find a unit to swap them? That would be very helpful - thank you !

On the other hand, what should I be looking for (part numbers?) if I want to swap those two ? Main power supply and/or RGB input board ?

Talking about the RGB input board, I believe this board is responsible for the external signal into the projector right ? I'm trying to rule out the fact that this might be the defect as well since when I press on the "ADJ" button on the remote, normally the internal pattern of the projector should be displayed, no matter if a source is connected or not.... So if not even that does work, can I rule out the RGB input being bad? This might be a brain fart from me... but I'm just thinking loud and trying to narrow down the issue...

Thank you for your time and best regards,

//Eric

Decibel · Joined: 31 May 2007 Posts: 904 Location: Roma - Italia

Eric
I have a friend that have a no working Cine 7 (bad quadrupler).
If you want I can try to ask him if want to sell to you the projector.
I should to have the service manual but now I'm not in my home.
When I will back in my home I check if it's available.

**Curt Palme** · Posted: Sat Jan 14, 2012 12:31 am Post subject:

Here;s some info on how they come out:

http://www.curtpalme.com/Barco701_Layout1.shtm

The power supply pulls out the front, the RGB board out of the back. Take a pix of how the wires all disconnect so you know when you put them back in. No, the RGB input board can still be bad if you get no internal menus, so it can still be an issue.