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front_range
Joined: 03 Mar 2008
Posts: 64
Location: North of Colorado Springs
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| Posted: Wed Oct 22, 2008 6:17 pm Post subject: Barco 70X Bow/Skew/Keystone adjustments no longer work |
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I'm working on a Runco 943 (aka Barco 708) I assembled from parts, and while in the process of going through guided setup, all the sudden my skew/bow and keystone adjustments went away and further tuning had no affect. I can go all the way from one end of the adjustment range to the other but it has no effect on the projection geometry. It seems these geometry signals come from the convergence driver board, but swapping that one out had no effect. Anyone run across this before? Any suggestions?
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Tom.W
Joined: 09 Mar 2006
Posts: 6635
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| Posted: Wed Oct 22, 2008 7:08 pm Post subject: |
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Have you tried a new controller or a full reset by deleting all blocks and starting from scratch ?
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front_range
Joined: 03 Mar 2008
Posts: 64
Location: North of Colorado Springs
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| Posted: Wed Oct 22, 2008 8:20 pm Post subject: |
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I tried both reseting the blocks and swapping in a new controller, still the same problem. Any other ideas?
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Tom.W
Joined: 09 Mar 2006
Posts: 6635
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| Posted: Wed Oct 22, 2008 9:08 pm Post subject: |
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Never owned a 7XX series but if it was working properly and then stopped it could be a loose connector or board or have you ruled this out ?
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front_range
Joined: 03 Mar 2008
Posts: 64
Location: North of Colorado Springs
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| Posted: Wed Oct 22, 2008 9:43 pm Post subject: |
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Yeah, I've looked over the harness looking for any loose wires but haven't been able to find anything and I've reseated all the connectors in the convergence and controller boards. My major problem is I don't understand the flow of the geometry correction circutry so I'm having a hard time figuring out all the parts that come in to play.
BTW, I've also tried replacing the shift & Focus board, no luck there. The I2C Bus test passes, and red and blue convergence controls work, so I don't think the convergence output board is an issue.
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front_range
Joined: 03 Mar 2008
Posts: 64
Location: North of Colorado Springs
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| Posted: Thu Oct 23, 2008 5:37 pm Post subject: |
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I found the +conv and -conv fuses were blown. I don't see how convergence could have still worked, maybe I had a loose connection then later blew the fuses and fixed the loose connection, hell I don't know. But now it works.
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garysorenson
Joined: 17 Jul 2007
Posts: 63
Location: Milwaukee, Wisconsin
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| Posted: Thu Oct 23, 2008 6:04 pm Post subject: |
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I have the exact same issue with my 701s, I had a messed up convergence board and swapped it out with another and the same exact thing is happening to me. I'm pretty sure it has something to do with the boards being different revisions. At some point they modified the board and neither are compatible. Wouldn't it be bazaar if we swapped our boards and both of our projectors functioned properly?
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garysorenson
Joined: 17 Jul 2007
Posts: 63
Location: Milwaukee, Wisconsin
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| Posted: Thu Oct 23, 2008 6:06 pm Post subject: Fuses? |
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Really fixed it? what fuses are these and where?
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front_range
Joined: 03 Mar 2008
Posts: 64
Location: North of Colorado Springs
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| Posted: Thu Oct 23, 2008 8:39 pm Post subject: |
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| garysorenson wrote: | | I have the exact same issue with my 701s, I had a messed up convergence board and swapped it out with another and the same exact thing is happening to me. I'm pretty sure it has something to do with the boards being different revisions. At some point they modified the board and neither are compatible. Wouldn't it be bazaar if we swapped our boards and both of our projectors functioned properly? |
I'm pretty sure both the convergence boards are the same across the 701-Cine7 line, but they are tuned together and you may have a problem with strange edge distortion if you mix them. As for the fuses, if the conv-/+ LEDs are out on the diagnostic board on the front of the PJ, fuse 10 & 11 on the power supply are blown. They are 4 amp pico fuses.
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garysorenson
Joined: 17 Jul 2007
Posts: 63
Location: Milwaukee, Wisconsin
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| Posted: Thu Oct 23, 2008 10:05 pm Post subject: |
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Only one of my leds light up until i turn it on, then no red. Leds light up
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