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no picture at green tube

 
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sukwoto




Joined: 26 Feb 2016
Posts: 23
Location: Indonesia


PostLink    Posted: Fri Dec 01, 2017 1:59 am    Post subject: no picture at green tube Reply with quote


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Hello,

I have problem at my green tube (Barco 1209 Graphics), no picture but has an orange glow at the tube.
I was switch the neck board but still can't working.
Pls advice

Thank you very much

Regards

Sukwoto
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dvh99




Joined: 25 Dec 2009
Posts: 2158
Location: nederland


PostLink    Posted: Sat Dec 02, 2017 12:36 am    Post subject: Reply with quote

probably broken tube
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Curt Palme
CRT Tech



Joined: 08 Mar 2006
Posts: 24296
Location: Langley, BC

TV/Projector: All of them!


PostLink    Posted: Sat Dec 02, 2017 1:06 am    Post subject: Reply with quote

Not if there is a glow at the base of the tubes. That's just incorrect advice.

As I mentioned before, you now have to get in there with a meter and measure voltages to see where you are missing a signal from.
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sukwoto




Joined: 26 Feb 2016
Posts: 23
Location: Indonesia


PostLink    Posted: Sat Dec 02, 2017 2:53 am    Post subject: Reply with quote

Curt Palme wrote:
Not if there is a glow at the base of the tubes. That's just incorrect advice.

As I mentioned before, you now have to get in there with a meter and measure voltages to see where you are missing a signal from.


Would you please to explain " 6 volt supply coming from the main power supply (SMPS) that goes to each 762292 board to supply the filament voltage"...which one cable should be checking

Thank you
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sukwoto




Joined: 26 Feb 2016
Posts: 23
Location: Indonesia


PostLink    Posted: Sat Dec 02, 2017 3:42 am    Post subject: Reply with quote

sukwoto wrote:
Curt Palme wrote:
Not if there is a glow at the base of the tubes. That's just incorrect advice.

As I mentioned before, you now have to get in there with a meter and measure voltages to see where you are missing a signal from.


Would you please to explain " 6 volt supply coming from the main power supply (SMPS) that goes to each 762292 board to supply the filament voltage"...which one cable should be checking

Thank you



neck board cable.jpg
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neck board cable.jpg


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km987654




Joined: 25 Jul 2007
Posts: 2852
Location: Australia

TV/Projector: Barco BG809s


PostLink    Posted: Wed Dec 06, 2017 5:15 am    Post subject: Reply with quote

sukwoto wrote:
sukwoto wrote:
Curt Palme wrote:
Not if there is a glow at the base of the tubes. That's just incorrect advice.

As I mentioned before, you now have to get in there with a meter and measure voltages to see where you are missing a signal from.


Would you please to explain " 6 volt supply coming from the main power supply (SMPS) that goes to each 762292 board to supply the filament voltage"...which one cable should be checking

Thank you


That cable would be for video not a cable for voltages. The cables that carry voltage are located at the other connector that runs from the mother board (Frame) to that RGB amp. They are usually yellow wires on Barco projectors (except 9 series). I don't have a manual for that projector so I can't say which wire it would be.

Having said the above (and I don't know what other discussions you have had) its also possible that the issue is related to the video circuit so do you have any spares to swap out including a SMPS a RGB input and RGB driver boards?
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sukwoto




Joined: 26 Feb 2016
Posts: 23
Location: Indonesia


PostLink    Posted: Wed Dec 06, 2017 11:35 am    Post subject: Reply with quote

I was try to swap the RGB board, but stil not working.
The LED at that board just one (right) is On

My SMPS just replace a view month ago from Curt, I think I still Ok

Pls advice

Thanks
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redfox001




Joined: 16 Mar 2009
Posts: 2251
Location: The Netherlands


PostLink    Posted: Wed Dec 06, 2017 12:59 pm    Post subject: Reply with quote

Check for bend pins. Sometimes when you insert the neckboard one pin does not go into one hole and it bends.
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sukwoto




Joined: 26 Feb 2016
Posts: 23
Location: Indonesia


PostLink    Posted: Thu Dec 07, 2017 2:42 pm    Post subject: Reply with quote

Yes, I check the pin and I pull tight the neck board into back tube.

It's working

Thank you for advice
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redfox001




Joined: 16 Mar 2009
Posts: 2251
Location: The Netherlands


PostLink    Posted: Wed Dec 13, 2017 2:15 pm    Post subject: Reply with quote

sukwoto wrote:
Yes, I check the pin and I pull tight the neck board into back tube.

It's working

Thank you for advice


Good!!!

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