BVM-1910 RGB Green screen / signal / cable Issue

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41714049
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BVM-1910 RGB Green screen / signal / cable Issue

Post by 41714049 »

Hello Everyone,

I was able to get a BVM-1910 for free and ordered a SCART to BNC cable. I have up to this point used a Framemeister to a modern TV. My issue is the image on the unit is green with diagonal green lines. Here is a description of settings and result:

External sync OFF = No recognizable image on any setting.
External sync ON on Component = Green Image; can barely make out what is displayed.
External sync ON on RGB = No recognizable image... EXCEPT right when I switch to the input I get 1 frame of "clear" picture (couldn't catch it on camera that well... was too fast).
Image

Any help is appreciated.
Last edited by 41714049 on Wed Dec 20, 2017 4:41 pm, edited 1 time in total.
41714049
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Re: BVM-1911 RGB Green screen / signal / cable Issue

Post by 41714049 »

Updated photo as i dint realize photobucket stopped 3rd party hosting for free accounts.
Dochartaigh
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Re: BVM-1911 RGB Green screen / signal / cable Issue

Post by Dochartaigh »

It looks like you're running Mike Tyson's Punchout on the original Nintendo (NES)? Which can only output via Composite natively. Are you using Composite (usually a yellow RCA cable), OR is your NES modded to output RGB? (or are you using a clone system with some other output options?)

If your NES isn't modded, and you happen to be using some sort of Composite to SCART cable that's probably your problem right there. Which input, or input card are you using for this on the BVM? Can that input card take Composite? I would try running the NES straight to the BVM with a yellow composite cable (or any RCA video cable, or even Component cable you have laying around) and see if it'll display. Sync would be set to internal, and you might have to go into the BVM's menu to setup which input it's using (most people aren't familiar with these 1910/1911 models as they're quite old so I'm not familiar with it's menu operation).
41714049
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Re: BVM-1911 RGB Green screen / signal / cable Issue

Post by 41714049 »

Dochartaigh wrote:It looks like you're running Mike Tyson's Punchout on the original Nintendo (NES)? Which can only output via Composite natively. Are you using Composite (usually a yellow RCA cable), OR is your NES modded to output RGB? (or are you using a clone system with some other output options?)

If your NES isn't modded, and you happen to be using some sort of Composite to SCART cable that's probably your problem right there. Which input, or input card are you using for this on the BVM? Can that input card take Composite? I would try running the NES straight to the BVM with a yellow composite cable (or any RCA video cable, or even Component cable you have laying around) and see if it'll display. Sync would be set to internal, and you might have to go into the BVM's menu to setup which input it's using (most people aren't familiar with these 1910/1911 models as they're quite old so I'm not familiar with it's menu operation).

Thanks for the reply. This is a modded Famicom with Tim Worthington board. Has been used on Framemeister for RGB so I know the RGB works as expected. This BVM version does not have a menu that I can find... everything appears to be a separate button on the pull out tray.
41714049
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Re: BVM-1910 RGB Green screen / signal / cable Issue

Post by 41714049 »

Updated post... Turns out the model on the back differs from the name plate... Is actually a BVM-1910.
Dochartaigh
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Re: BVM-1911 RGB Green screen / signal / cable Issue

Post by Dochartaigh »

41714049 wrote: Thanks for the reply. This is a modded Famicom with Tim Worthington board. Has been used on Framemeister for RGB so I know the RGB works as expected. This BVM version does not have a menu that I can find... everything appears to be a separate button on the pull out tray.
Don't know what to tell you then - the monitor might have a hardware problem, but give the 1911 manual a read:

https://ia800806.us.archive.org/18/item ... Manual.pdf

I believe the functionality is near identical to the 1910 - and there should be a menu button on yours (let us know if there's not).
41714049
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Re: BVM-1911 RGB Green screen / signal / cable Issue

Post by 41714049 »

Dochartaigh wrote:
41714049 wrote: Thanks for the reply. This is a modded Famicom with Tim Worthington board. Has been used on Framemeister for RGB so I know the RGB works as expected. This BVM version does not have a menu that I can find... everything appears to be a separate button on the pull out tray.
Don't know what to tell you then - the monitor might have a hardware problem, but give the 1911 manual a read:

https://ia800806.us.archive.org/18/item ... Manual.pdf

I believe the functionality is near identical to the 1910 - and there should be a menu button on yours (let us know if there's not).
Thanks, i have reviewed that manual. The pull out tray has a different arrangements and different options... so trying to figure that one out :shock: .

This is the pull out tray:

Image
Dochartaigh
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Re: BVM-1911 RGB Green screen / signal / cable Issue

Post by Dochartaigh »

Sorry I'm striking out everywhere. There's a guy on YouTube who made a video about the BVM-1910 - might want to message him. This below link should be the manual I found, OCR'd, and uploaded. It's for the BVM-2010P, 2010PD, 2010PM, 2010PMD models - which are most likely the EU designation/model numbers of the USA BVM-1910 model. Maybe it'll help. If you haven't tested the monitor before it could simply be malfunctioning.

https://archive.org/download/SonyBVM201 ... Manual.pdf

Oh, and the on-screen display/menu for auto-setup (if I'm reading it correctly) only works with an optional card on the 1910 - whereas the 1911 I believe it has a built in on-screen menu which'll give you more options and things like how many hours the monitor has on it.
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Syntax
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Re: BVM-1910 RGB Green screen / signal / cable Issue

Post by Syntax »

Dont BVM require csync or ttl csync? I know they are picky.
If you get a clear image for a split second is say that's your problem.
41714049
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Re: BVM-1910 RGB Green screen / signal / cable Issue

Post by 41714049 »

Dochartaigh wrote:Sorry I'm striking out everywhere. There's a guy on YouTube who made a video about the BVM-1910 - might want to message him. This below link should be the manual I found, OCR'd, and uploaded. It's for the BVM-2010P, 2010PD, 2010PM, 2010PMD models - which are most likely the EU designation/model numbers of the USA BVM-1910 model. Maybe it'll help. If you haven't tested the monitor before it could simply be malfunctioning.

https://archive.org/download/SonyBVM201 ... Manual.pdf

Oh, and the on-screen display/menu for auto-setup (if I'm reading it correctly) only works with an optional card on the 1910 - whereas the 1911 I believe it has a built in on-screen menu which'll give you more options and things like how many hours the monitor has on it.
Thanks... this came out of a working broadcast studio... but for free... didn't test before picking up.

I will review the manual and see where I get with it.
Syntax wrote:Dont BVM require csync or ttl csync? I know they are picky.
If you get a clear image for a split second is say that's your problem.
Ill be trying with other consoles today with TTL CSync. Thanks.
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Re: BVM-1910 RGB Green screen / signal / cable Issue

Post by Fudoh »

and just to get the most obvious issue out of the way: are you sure your breakout cable is wired for the right direction ? If it's wired for the other direction (BNC to Scart), then the Sync signal won't reach your monitor.
41714049
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Re: BVM-1910 RGB Green screen / signal / cable Issue

Post by 41714049 »

Fudoh wrote:and just to get the most obvious issue out of the way: are you sure your breakout cable is wired for the right direction ? If it's wired for the other direction (BNC to Scart), then the Sync signal won't reach your monitor.
That is the first thing I checked... And I think it is right. I will post pin numbers soon.
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Re: BVM-1910 RGB Green screen / signal / cable Issue

Post by Fudoh »

That is the first thing I checked... And I think it is right.
keep in mind that pin numbers flip with gender, so if you're using a switch along with a male cable, it flips.
41714049
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Re: BVM-1910 RGB Green screen / signal / cable Issue

Post by 41714049 »

Fudoh wrote:
That is the first thing I checked... And I think it is right.
keep in mind that pin numbers flip with gender, so if you're using a switch along with a male cable, it flips.
Yup... That is why I said I think hahahaha. I'll get info tonight.

Thanks everyone!
41714049
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Re: BVM-1910 RGB Green screen / signal / cable Issue

Post by 41714049 »

OK I have a picture.... got that working... thanks everyone! Than manual helped! But next issue is I don't have Green.

Plugged green into to blue input, shows fine (as wrong colour, but shows) therefore green has signal.

Plugged green into green input, very faint green image.

Plugged red into green input, very faint green image.

Plugged blue into green input, very faint green image.

Any suggestions?
41714049
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Re: BVM-1910 RGB Green screen / signal / cable Issue

Post by 41714049 »

Confirmed same if inputting composite signal... is the unit shot?
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mikejmoffitt
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Re: BVM-1910 RGB Green screen / signal / cable Issue

Post by mikejmoffitt »

Shot in the dark, but check the green gun's bias and gain?
Image
41714049
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Re: BVM-1910 RGB Green screen / signal / cable Issue

Post by 41714049 »

Seems like green just sprays random lines and green haze, with a very fain ghost image of what it should be shooting out....
41714049
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Re: BVM-1910 RGB Green screen / signal / cable Issue

Post by 41714049 »

mikejmoffitt wrote:Shot in the dark, but check the green gun's bias and gain?
I played with it... no difference in image at all neither gain nor bias.
41714049
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Re: BVM-1910 RGB Green screen / signal / cable Issue

Post by 41714049 »

Also should mention when I turn down the brightness, Red and Blue dim, but the green lines and haze do not... just turns green.
41714049
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Re: BVM-1910 RGB Green screen / signal / cable Issue

Post by 41714049 »

Here are some examples of what I mean:

1 - All colors on:
Image

2 - Only Red:
Image

3 - Only Blue:
Image

4 - Only Green:
Image

5 - All colors on with Brightness all the way down:
Image
41714049
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Re: BVM-1910 RGB Green screen / signal / cable Issue

Post by 41714049 »

Found the Geen issue! There was a broken connector on the front side of the board for the gun. Was hard to see as the unit had to be partially taken apart to see this.

Last issue, think there is no fix to this, but I will try... there is a light vertical band across the screen. Can see it all the time, but when a game cuts to all black screen it is super visible.

Image
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Re: BVM-1910 RGB Green screen / signal / cable Issue

Post by mikejmoffitt »

The BVM-1910 shows a line like that during power-on, but it should go away relatively quickly. Make sure it isn't in setup mode or anything like that!
Image
41714049
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Re: BVM-1910 RGB Green screen / signal / cable Issue

Post by 41714049 »

Confirmed that all 3 colors project that band, each slightly offset from the other - hence the rainbow effect on the edges of the band. Here is another example running Mike Tyson's Punchout.

Image
41714049
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Re: BVM-1910 RGB Green screen / signal / cable Issue

Post by 41714049 »

mikejmoffitt wrote:The BVM-1910 shows a line like that during power-on, but it should go away relatively quickly. Make sure it isn't in setup mode or anything like that!

Setup mode shows something similar just squished down vertically. It is in Operate mode.
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