CurtPalme.com Home Theater Forum

barco_75 · Joined: 14 Jan 2009 Posts: 171 Location: Chicago

I've been spending a good deal of my time tinkering with a Barco 808 graphic the past month which I acquired after my Barco 708 died. Unfortunately, the past owner removed all the guts to get it off the ceiling leading to glorious projector fun. Picture was flickering on the 808 and turns out the lead to the G2 wasn't connected. After getting that sorted out, I found the focus and horizontal deflection board had a screwed up connector frying that as well.

Now that I have that fixed, I am having issues syncing my Bluray through my HDFury version 1. I've used the same Bluray, HDMI connectors, and HDFury on the 708 so I know they work. I thought perhaps the length of the cable was an issue, so I tried it with an 18" HDMI cable that was part of the original setup and still problems. I'm hooked up on Port 5 with 5 BNC. 24 frames is set off, 1080i setting on the Bluray. I can get the Bluray home screen on the projector no problem, however, I do get a horizontal banding which distorts the image at the top. If the home screen is on too long, the Barco looses sync and goes black saying "no source found". When I play a movie on the Bluray, havoc ensues. The image goes blank ("no source found") then it might start up, image start to scroll, image goes blank, etc. I have no issue displaying S-video from VHS. I can't tell if the VHS has the Horizontal Banding issues since all my tapes are garbage due to age.

Should I try port 3? Would I have better luck? I've got to buy the DB15 to DB9 adapter to try that. What's going on with this. It's frustrating as hell.

barco_75 · Joined: 14 Jan 2009 Posts: 171 Location: Chicago

FYI, projector does not exhibit the horizontal banding issue when using the internal test patterns matching the frequency of the Bluray home screen. Not sure if it's relevant but I do still have an I2C error :FOH after replacing the focus and horizontal board. I had the same error prior. I just shifted the raster using the pots on the board.

km987654 · Posted: Tue Mar 05, 2013 6:51 am Post subject:

How have you connected the BD player to port 5 since no BD player has vga or bnc out? If there is no device in the video chain to strip HDCP encoding then there will be no picture if you are outputting a HD image.

km987654 · Posted: Tue Mar 05, 2013 6:52 am Post subject:

km987654 · Posted: Tue Mar 05, 2013 6:55 am Post subject: Re: I'm going mad!

Ile · Posted: Tue Mar 05, 2013 7:50 am Post subject:

Port3 might help to possible positive sync issues caused by BR player, it have force syncs to negative switch.

What are you meaning by horizontal banding at top?

Horizontal banding is at left edge and is caused by too small porch settings from source (timings designed for digital display). Scaler can fix timings.

barco_75 · Joined: 14 Jan 2009 Posts: 171 Location: Chicago

The hdfury takes care of the 5 bnc or VGA output and striping hdcp encoding. I wasn't aware a standard converter didn't work but I kind of expect it may not. I see the pin out on the site. Does anyone sell a cable made? I could make one if I had to but if anyone is already selling them it may be easier. I have an extron box which could switch output to negative but I do t have cables for it yet and was hoping I wouldn't need it. Is it possible for the bluray to output both positive and negative sync? I thought since the home screen image worked it must have been negative? The banding I'm describing is near the top of the image (but not at very top edge). The hole image is shifted over horizontally in one horizontal band ( or section). The band is not very tall. Does the convergence tray cause FOH error in particular? Per the service manual that chip is located on the focus and horizontal deflection board.

barco_75 · Joined: 14 Jan 2009 Posts: 171 Location: Chicago

I've also heard that port 3 is more finicky than port 5 but port 3 has slightly better quality. Has anybody used the fury version 1 with success on the barco 808 graphics? If so how was it hooked up?

barclay66 · Posted: Tue Mar 05, 2013 5:10 pm Post subject:

Hi,

I had tried an HDFury I on my Barco Graphics 801s (input section almost identical to the 808). No success on either Port 3 or Port 5 due to sync issues. I then switched to an HDFury III, forced negative sync and everything was well. In Your case the Extron box could help. I'll take a look at the SM later regarding the I2C error...

Regards,
Barclay66

Hulio · Joined: 15 Apr 2006 Posts: 494 Location: Belgium

I used a HD Fury 1 on port 3 of my BG808 for several years without problems ( PS3 --->HDMI to DVI cable --->HD Fury 1 --->VGA to DB9 cable ---> port 3 on Barco ).
From the symptoms you describe, it seems you don't use the optional power supply for HD Fury.
Also, on non S Barco's, port 3 delivers a better PQ than port 5.

barco_75 · Joined: 14 Jan 2009 Posts: 171 Location: Chicago

I don't have the optional power. Hulio is your VGA to db9 a custom cable or did it come with your Fury? I'm curious what Barclay66 discovers about the i2c error. I'm going to need some adapters to try this out. Hopefully I can get this to work.

barclay66 · Posted: Wed Mar 06, 2013 7:57 am Post subject:

Hi,

Hulio · Joined: 15 Apr 2006 Posts: 494 Location: Belgium

km987654 · Posted: Thu Mar 07, 2013 4:15 am Post subject:

barco_75 · Joined: 14 Jan 2009 Posts: 171 Location: Chicago

Success! I figured out the sync issue!!!!!! The Extron Box solved the issue. I didn't have the right cables to hook up the Extron Box (nor could I find any at the local stores), but I did have four BNC to RCA cable adapters (=2 BNC cables). So I hooked up the composite sync and Green only from the Extron (feed by the HDFury) and I got a stable image with no banding. Tried the same on the Blue and Red hookup and all is good. I'm guessing the issue is with the Blue Ray not having a negative sync or maybe the Barco doesn't like the individual horizontal and vertical syncs (which I couldn't test since I didn't have the right cable). I still can't get the computer to sync but I'm guessing I need a power adapter for the Fury (even though I didn't need the adapter with my last setup).

Still get the FOH error which comes up with the two boards I have tested. Barclay, it sounds like the FOH error has to be limited to the Focus/Mag shift board (and not another board), correct?

Has anyone tested the difference from using port 3 vs port 5 on the non-S 808? Is it a dramatic difference? Is it worth upgrading to the Fury 3 or Moome Card for better picture quality? Is there a noticeable difference? I have some HD-145 lens which I'll have a friend fabricate an adapter so that should make a big difference. The HD-8 lens have poor outer focus based on my first alignment and setup.

barclay66 · Posted: Sat Mar 09, 2013 7:24 pm Post subject:

**Curt Palme** · Posted: Sun Mar 10, 2013 1:28 am Post subject:

The FOH can (from what I've seen) come from the focus/shift board. His replacement came from me, I'll send another one out. If it's still showing that error, we'll have to do some digging...

barclay66 · Posted: Sun Mar 10, 2013 11:42 am Post subject:

Hi,

IC52 is one of five I2C devices on the Focus/Shift board. There are only a few options why You could encounter the FOH error:

- IC52 is bad, doesn't respond and/or to execute I2C commands -> Replace Focus/Shift board
- IC52's power supply is bad (+SH/-SH: generated on board) -> Replace Focus/Shift board
- Focus/Shift board's power supply is bad (+SHIFT/-SHIFT: generated on SMPS) -> Replace SMPS

The I2C communication between the controller board and the Focus/Shift board should be OK as the other four I2C devices seem to respond...

Regards,
barclay66

Edited some typos...

barco_75 · Joined: 14 Jan 2009 Posts: 171 Location: Chicago

Thanks for the tips. I'm hoping the new board solves the issues.