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Discussion Starter · #1 ·
I'm very confused. I have a 1272Q that I was running with a DVDO line doubler. I had to switch the jumpers inside the DVDO to get it to sync on green in order to get an image projected--that was all well and good for awhile. NOW, though, I have recently purchased the Rock+ video processor and brand new cables, and the 1272 cannot get a signal through the RGBHV cables! All that shows up on the screen is NO INPUT. I tried connecting my laptop to the 1272 using the VGA to RGBHV cable that came with the DVDO (to see if it is possibly a problem with the Rock+ or the new cables), and got the same NO INPUT message. Does anyone out there know what might be wrong here? I'm getting really bummed out, because it should work according to everything I've read (I spent several hours last night looking through old threads to see if anyone else has had a similar problem to no avail). I've used the menu system to change the clamp settings from AUTO to SonG to H/C to H.P and back to AUTO without any success. I guess the next step is to hook up my monitor to the Rock+ to make doubly sure that it's some kind of interface problem with the projector. In any case, any help at all would be greatly appreciated...
 

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Have you set the 1272 for separate sync? Hold down the "TEST" key on the remote until it displays "Do you want to enter Serviceman Mode?" and hit the UP key to confirm. Then hit the page key until the choices for sync are displayed.


My guess is that you have "SonG" (Sync On Green") selected.


Paul
 

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Discussion Starter · #3 ·
Thanks, Paul, for your suggestion. I tried it, but unfortunately it didn't work :-(. This is really starting to drive me crazy! It seems that there just MUST be a simple explanation for the fact that my 1272Q will only output a sync-on-green signal from my old DVDO and displays a NO INPUT message whenever I try to connect a monitor, video processor, or anything else using the RGBHV input! ARRRRGH! SOMEBODY PLEASE HELP ME! :)
 

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One real simple possibility comes to mind ... perhaps you have a bad RGBHV cable??


Another one, less fun: maybe a bad IFB-10 or 11 input board?


The sync setting is on Auto, right?
 

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HI,


I don't know yet what the problem is but I agree it's perhaps a simple and annoying one.


Did you try the Rock with your monitor yet?


Try pushing those A B buttons. (Just a thought)


Does the rock have an S-Video output you can try for purposes of diagnosis? (I think not but maybe)


Good Luck,


Brian


Edit: Could the horizontal and vertical synchs be on the wrong inputs? Can you just try RGB without the HV since that's what was working with the DVDO? Can the DVDO be hooked back up to verify it still works?
 

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Discussion Starter · #6 ·
Hi, thanks for the replies! I have considered the possibility of bad cables, but the likelihood seems so slight, especially since I used DIFFERENT cable (the VGA to RGBHV) to hook up my laptop to the projector and got the same NO INPUT signal, yet when I used the same cable as RGB with sync-on-green with my DVDO, it worked fine. Unfortunately, the Rock+ has no output other than RGBHV, and I was unable to find a male to female DB15 gender changer today to test the Rock+'s output with my monitor--I'm going to do that tomorrow. The H and V and RGB cables are all properly connected; the Rock unfortunately does not have any connections other than RGBHV; the Rock does not sync-on-green, so I can't check the RGB of the rock; the DVDO still works, although only with the aforementioned RGB and sync-on-green. I don't think that it is a faulty input board, simply because I replaced a 1270Q with this 1272Q, and the 1270Q is the one I originally connected my line doubler to and was forced to switch the jumpers to sync-on-green to project an image (in other words, even with my 1270Q the RGBHV was not showing up when connected to the VGA to RGBHV supplied with the DVDO--why even have the H and V at all, then?). So, my gut feeling is that it is some sort of default status of the Sony projectors that is causing this problem, but I am at a loss to figure out what it could be...
 

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Quote:
(in other words, even with my 1270Q the RGBHV was not showing up when connected to the VGA to RGBHV supplied with the DVDO--why even have the H and V at all, then?). So, my gut feeling is that it is some sort of default status of the Sony projectors that is causing this problem, but I am at a loss to figure out what it could be...
I have set up about half a dozen 1272Q / DVDO combos for myself and for clients, and have never had to resort to internally modifying the DVDO for Sync-on-green. The RGBHV input on the Sony is compatible with the DVDO output, all you have to do is set the PJ Sync for Auto Detect (AUTO). So I'm pretty sure there isn't a default status in the PJ causing a problem.


I know you have tried different cables, and your laptop didn't work with a different cable. If the PJ was set up for Sync on Green (SonG) when you tried your laptop with a different RGBHV cable, it probably wouldn't work, since the PJ was looking for negative sync voltage on the green input.


I'd take another look at your DB15 to RGBHV cable, even if you think its a long shot. Can you get a continuity checker and make sure the H and V sync connections appear in the correct places on the DB 15, and aren't shorted?



Regards,
 

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Hi,


OK forgive me if this is wrong but could it be that your input board in the Sony is not the usual one (IFB-11, i think)?


There's a different board for component video and maybe that's what you have in the Sony. That would explain the need to change a few jumpers on the DVDO.


I have no experience with the DVDO or the Rock (sad, isn't it) so this is a difficult call. Maybe if I just keep this at the top someone with said experience will read it.


Good Luck,


Brian


Edit: Maybe this is wrong as well but...


Can't you just connect the RGB from the rock (leave the others, HV, off for now) and set the projector for Synch on Green. I think (but I'm not near my FP to check) I can do this with my HTPC. I just connect RGB (no HV) and set for SonG and it works. Maybe I'm remembering this wrong though. I don't remember why I tried that but I seem to remember it working and it could be a starting point for you.
 

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Hi Chadvz:


I'm running a 1270/DVDO/HTPC combo with an IFB-11 board and 3' BetterCables VGA breakout cable. I was having the exact same problem for the last 3 months. Sync / screen jitter probs got continually worse until finally No Signal mssg. from both the PC/Line-Doubler. I had my fingers crossed that it was ONLY the interface board, but decided to throw a $15 generic VGA/5BNC cable at the problem. Guess what? problem solved! The picture is sharp/steady - better than ever. All I can say is "hang in there" and go get a cheap test cable. Does anybody know the warranty period for BetterCables products? Cable is only 9mos old - who would have guessed?


Stephen Kirby / Monterey, CA
 
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