
01-04-2012, 10:11 PM
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 | | | Join Date: Sep 2011 Location: USA
Posts: 54
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Originally Posted by Les is more I installed the LCD monitor on my old HAAS and it works like a charm. How much more progress do you need?
If one of your old LCD monitors has a 9 pin connector, then just plug it in, power it up, and check if you can see something on the screen. It is that simple. I tried to use a newer monitor with a 15 to 9 converter cable, and it was a no go. |
Sorry, I should have been more specific. I am checking to see if any of the converters mentioned in the beginning of the post worked. I know the Haas is an MGA/TTL signal. I just wanted to know if some of the OP's came up with a converter solution.
Originally Posted by Dementianati First, the old monitors are MGA - the 9 pin is not the DE-9 VGA semi-standard, but rather the original IBM monochrome video (remember the original IBM PC with the green screen monitor?).
5) I just found this option... Several far east manufacturers have started making converters for older video game consoles to use a VGA monitor. These normally hook to a TV. This, as it turns out, is exactly what is needed. A search on eBay (search for "CGA VGA") turns up several models under $100. You just need to make your own cable for the input, which is trivial.
I am doing option 5 immediately to get the thing going, but will do option 4 eventually.
Go to Wikipedia and look up MGA (actually listed under MDA on Wikipedia) and CGA for the pinouts.
On the DE-9 connector, pins 1,2 are ground, pin 8 is horz sync and pin 9 is vert sync. Intensity is pin 6.
MGA (and HAAS) use pin 7 for monochrome video with pins 3,4,5 unused. CGA uses pins 3,4,5 for RGB with pin 7 unused. Most monitors that take CGA also take MGA and figure out which pins have signal. The eBay adapters also do this.
Good luck. |
Originally Posted by zagan engelsein Hello, this is my first comment here; regarding the issue we are trying to change the monitor in a VF6 Haas, we bought a CGA to VGA converter (GBS-8220; 42 dlls) but it didn't work because the signal from the Haas is MGA (MDA) not CGA, so, for this purpose you need a converter from MGA to VGA and the one I found might work is the GBS-8219 (280 dlls), as it is intended for that.
So, we gonna order the GBS-8219 from jammaboards and I'll post if it's worked.
Zagan |
The looking around that I did kept leading me to the Jammaboard. Here is a link to get a description. http://www.ebay.com/itm/jamma-arcade...item3a6741de4c
Has anyone tried it out to see if it works? I have a perfectly good 15 inch LCD sitting here that I would love to put on my Haas. I mainly want to get rid of the burn in on my display. I know that an LCD screen is commercially available, I just can't justify the cost unless mine totally quits and I have no other choice.
Steve |