| Author |
Message |
Decibel
Joined: 31 May 2007
Posts: 904
Location: Roma - Italia
|
| Posted: Tue Sep 17, 2013 6:49 am Post subject: Runco DTV1100 pulsating brightness |
|
|
I'm selling this projector.
I completely reassembled it for shipping.
Unfortunately I must to stop the selling because the projector show a unknown issue.
There's a pulsating brightness on the red and green tubes, in particular on the red.
Apparently no issue on the blue tube.
I tried to change ALL boards except quadrupler, change also the red tube, swap RGB output boards.
I can see an error message but I cannot read it (the unit is in a little room and have no lenses).
Soon I will post a short video.
Notes:
The unit have all genuine boards except convergence output board, EHT, quadrupler and splitter that are all old style with EHT jumper modification as Curt teach. I think it was just Curt to make the modification for the previous owner.
I tried also to slide out the convergence tray.
_________________
Domenico (Barco fan!)
|
|
| Back to top |
|
 |
ElTopo
Joined: 07 Nov 2006
Posts: 1640
|
| Posted: Tue Sep 17, 2013 8:01 am Post subject: |
|
|
Are you going digital ?
_________________
Barco Cine 9 the one and only
|
|
| Back to top |
|
|
Decibel
Joined: 31 May 2007
Posts: 904
Location: Roma - Italia
|
| Posted: Tue Sep 17, 2013 8:06 am Post subject: |
|
|
| ElTopo wrote: | | Are you going digital ? |
No I have BG1209s in my HT 
_________________
Domenico (Barco fan!)
|
|
| Back to top |
|
|
CasetheCorvetteman
Joined: 09 Nov 2008
Posts: 6326
Location: Australia
|
| Posted: Tue Sep 17, 2013 10:04 am Post subject: |
|
|
Isnt the DTV1100 a 1209s?
Does it pulse like this with a source?
|
|
| Back to top |
|
|
fragzero
Joined: 30 Aug 2012
Posts: 344
|
| Posted: Tue Sep 17, 2013 10:14 am Post subject: |
|
|
|
Not sure about the internal layout of this type of Barco but i had a similar issue with my 808 because the 230V wires were a bit too close to my SMPS. Might want to check that!
|
|
| Back to top |
|
|
Decibel
Joined: 31 May 2007
Posts: 904
Location: Roma - Italia
|
|
| Back to top |
|
|
Curt Palme
CRT Tech
Joined: 08 Mar 2006
Posts: 24396
Location: Langley, BC
TV/Projector: All of them!
|
| Posted: Tue Sep 17, 2013 1:03 pm Post subject: |
|
|
|
You can swap boards with the 1209s to narrow it down. I do not think it's an HV issue, that would affect all tubes, and wouldn't cause brightness issues the way the video shows it. I'd suspect something on the two video boards, connected together with those 3 white cables or maybe on the G2 board.
|
|
| Back to top |
|
|
Decibel
Joined: 31 May 2007
Posts: 904
Location: Roma - Italia
|
| Posted: Wed Sep 18, 2013 10:13 am Post subject: |
|
|
| Curt Palme wrote: | | You can swap boards with the 1209s to narrow it down. I do not think it's an HV issue, that would affect all tubes, and wouldn't cause brightness issues the way the video shows it. I'd suspect something on the two video boards, connected together with those 3 white cables or maybe on the G2 board. |
Curt I tried to swap ALL boards with others that are fully working.
I tried to swap G2 board and RGB input/driver boards first of all.
... and I swap the red tube also with another.
However I noticed that if I warm up the unit for a while the issue seems to disappear.
Maybe the projector has been idle too long.
_________________
Domenico (Barco fan!)
|
|
| Back to top |
|
|
|
|
