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DisTreSs
Joined: 19 Nov 2007
Posts: 39
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| Posted: Tue Feb 26, 2008 9:52 am Post subject: 1209/2, the saga continues |
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On last weeks episode: DisTreSs fries his EHT board on the newly arrived 1209/2 but with Curt coming to his rescue, he is able to overcome this ordeal.
Now... the conclusion of this (hopefully) two-parter:
The projector fired up without a problem, menu is accessible so this guy was a happy camper.
Time to plug in a source... Turned the PJ off fully, connected a RGBHV source (Xbox 360) -> no source found -> no joy...
Connected a laptop @ 1024x768 -> picture... BUT... it is seriously distorted since there are huge scanlines running across + the "I2C shorted" led comes on...
Selecting the menu reveals a very distorted menu as well.
Trying another resolution, no source is found again.
Disconnected the source and all is well again... except for the fact of course that without being able to attach a source it's pretty useless... 
First thought that comes to mind is the RGB input board of course. However, searching on the "I2C shorted" message reveals the following from Curt:
An I2C error has to do with the serial bus line throughout the set that controls all of the software control, which controls the various BArco chips.
Most common: BAd waveform board on the convergence board. Pull out the convergence board and see if it works. (without convergence)
Other possible boards:
controller board itself.
H shift board
V board
quad decoder
motherboard
The SMPS, H board, RGB Switcher, EHT and G2 board do not have any software control on them. A chip or similar has shorted out on one of those boards, killing the communication between the controller and the other boards.
So is there any way to check whether this is indeed a convergence board issue?
Thx as usual for your help!
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Ile
Joined: 09 Mar 2006
Posts: 1491
Location: Jyväskylä, Finland
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| Posted: Tue Feb 26, 2008 10:17 am Post subject: Re: 1209/2, the saga continues |
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| DisTreSs wrote: | | So is there any way to check whether this is indeed a convergence board issue? |
Remove convergence tray and see if error goes away.
Xbox might have positive syncs and those don't work with 1209.
Same thing with laptop, only 1024x768 works as is. Other resolutions from pc need negative syncs from video card drivers or you need sync box for conversion.
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DisTreSs
Joined: 19 Nov 2007
Posts: 39
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| Posted: Tue Feb 26, 2008 10:38 am Post subject: Re: 1209/2, the saga continues |
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| Ile wrote: | | DisTreSs wrote: | | So is there any way to check whether this is indeed a convergence board issue? |
Remove convergence tray and see if error goes away.
Xbox might have positive syncs and those don't work with 1209.
Same thing with laptop, only 1024x768 works as is. Other resolutions from pc need negative syncs from video card drivers or you need sync box for conversion. |
Ok, thx Ile, will try this when I get home.
Thought that the 1209/2 was more recent than the BG808s though and would be able to negotiate the pos sync signal for sure.
The BG808s sure does without problem anyway so I expected nothing less from the 1209/2.
Maybe I need to read up on my CRT history though 
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Ile
Joined: 09 Mar 2006
Posts: 1491
Location: Jyväskylä, Finland
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| Posted: Tue Feb 26, 2008 1:00 pm Post subject: Re: 1209/2, the saga continues |
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| DisTreSs wrote: | Thought that the 1209/2 was more recent than the BG808s though and would be able to negotiate the pos sync signal for sure.
The BG808s sure does without problem anyway so I expected nothing less from the 1209/2.
Maybe I need to read up on my CRT history though |
It's vice versa. BG808s have newer rgb signal way, same what 1209s use. 1209/2 is same what 1209, but it may have optional iris2 and have few minor upgrades.
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DisTreSs
Joined: 19 Nov 2007
Posts: 39
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| Posted: Tue Feb 26, 2008 2:02 pm Post subject: Re: 1209/2, the saga continues |
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| Ile wrote: | | DisTreSs wrote: | Thought that the 1209/2 was more recent than the BG808s though and would be able to negotiate the pos sync signal for sure.
The BG808s sure does without problem anyway so I expected nothing less from the 1209/2.
Maybe I need to read up on my CRT history though |
It's vice versa. BG808s have newer rgb signal way, same what 1209s use. 1209/2 is same what 1209, but it may have optional iris2 and have few minor upgrades. |
True, how could I forget about the famous s 
I was basing myself solely on dates.
My BG808s is from around '97 and so is this 1209/2...
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DisTreSs
Joined: 19 Nov 2007
Posts: 39
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| Posted: Tue Feb 26, 2008 8:51 pm Post subject: |
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SORRY SORRY SORRY, I messed up again 8)
I2C shorted led isn't on at all 
Let me recap what IS going on right now.
- Without source connected: PJ lights up fine, menu displays correctly, all tubes lit
- With composite source connected: PJ lights up fine, image displayed correctly, menu displayed correctly
- With RGBHV source connected on port 4 (PC @ 1024x768 or other res with forced negative sync) -> no source detected
- With RGBHV source connected on port 5 (PC @ 1024x768 or other res with forced negative sync) -> at first I would get all three tubes lit with huge scrolling from top to bottom (3 to 6 big fat horizontal bands depending on frequency chosen), but now I only get the blue tube with the same scrolling. Red and green tubes emit slow flickering at the bottom as if the PJ were in pause mode. Additionally, when I try to access the menu, it comes out all squished and at the top of the screen...
Reverting to another input gives me a normal menu again.
I should also add that the sound the PJ makes when something is attached to the 4/5 port is anything but comforting. The best way to describe it is as if there is a fairly large increase in buzzing/static noise...
I do not have any leds other than stdby, processing cycles and main power that are on.
I do not have any leds on the amps of the tubes (like with my BG808s... dunno if this is normal for 1209?) so unable to gauge G2...
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Ile
Joined: 09 Mar 2006
Posts: 1491
Location: Jyväskylä, Finland
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| Posted: Tue Feb 26, 2008 10:14 pm Post subject: |
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Sounds that you still have sync problem. Do you have Nvidia video card?
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DisTreSs
Joined: 19 Nov 2007
Posts: 39
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| Posted: Tue Feb 26, 2008 10:21 pm Post subject: |
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Nope, for now (since the PJ is not in my HT) I'm simply using a laptop with Intel 945 GM.
Used powerstrip to set it to negative sync of course.
How about the fact that only the blue lights up though? That doesn't really seem sync-related.
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Ile
Joined: 09 Mar 2006
Posts: 1491
Location: Jyväskylä, Finland
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| Posted: Wed Feb 27, 2008 8:34 am Post subject: |
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| DisTreSs wrote: | | How about the fact that only the blue lights up though? That doesn't really seem sync-related. |
Could be related to that, since pj won't lock to frequency. Or then input boards (switcher) R/G front sections have to be broken, since you wrote that composite works proberly. If it still works, other boards are ok.
Try to adjust V-hold pots from vertical deflection board, those sometimes drift and that cause scrolling. Or it have never been adjusted for high resolutions and it expect width sync.
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Curt Palme
CRT Tech
Joined: 08 Mar 2006
Posts: 24396
Location: Langley, BC
TV/Projector: All of them!
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| Posted: Wed Feb 27, 2008 1:47 pm Post subject: |
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THE RGB switcher card could be bad. That's not uncommon.
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DisTreSs
Joined: 19 Nov 2007
Posts: 39
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| Posted: Fri Apr 04, 2008 7:32 am Post subject: |
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It's been slow-going on this PJ due to a lack of time, but now that I have a new RGB card, things are starting to pick up again.
However, I've run into yet another bump in the road 
The scanning lines have now disappeared courtesy of the new RGB card, but I now have a problem syncing this thing to resolutions.
I've only managed to get it going correctly with one specific laptop at 1280x720@60Hz with negative sync enabled through powerstrip. Try any other resolution though on that same laptop and things take a turn for the worse: I get picture but it says I'm running at 239 MHz!!!!!
On other pc's, I haven't been able to get anything going: even using the powerstrip to set the 1280x720@60Hz in much the same way as I did on the laptop, the pc immediately jumps to the astronomical refresh rate...
Can anyone tell me what is causing this and what can be done about it because I'm kind of at a loss.
Thx!
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DisTreSs
Joined: 19 Nov 2007
Posts: 39
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| Posted: Sun Apr 06, 2008 9:45 am Post subject: |
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Anyone?? 
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Murillo
Joined: 30 Dec 2007
Posts: 113
Location: Sweden
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| Posted: Wed Apr 30, 2008 10:04 pm Post subject: |
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| Ile wrote: | | Sounds that you still have sync problem. Do you have Nvidia video card? |
I have the same problem as described in this topic, but unlike DisTreSs I have a Nvidia video card. It sounds like you have a solution to the problem with Nvidia cards, and I would be really grateful if you would share it with me.
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