Discussion:
STNG DIsplay Question
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Eric-STNG
2022-01-22 22:39:51 UTC
Permalink
I have a STNG game and my display is having an odd issue. It works fine when entering the settings menu, it tests out fine in the system test.

However, when i move to play the game, the display goes blank. if i move back to the settings menu, the display comes back.

I tested the pins on the Display and all the voltages appeared to be correct.

Once in a while it will work, but then freezes

Any suggestions?
John Robertson
2022-01-23 06:15:07 UTC
Permalink
Post by Eric-STNG
I have a STNG game and my display is having an odd issue. It works fine when entering the settings menu, it tests out fine in the system test.
However, when i move to play the game, the display goes blank. if i move back to the settings menu, the display comes back.
I tested the pins on the Display and all the voltages appeared to be correct.
Once in a while it will work, but then freezes
Any suggestions?
Can you run the display tests in the Diagnostics menu? This covers the
various image "pages" that the DMD controller uses to generate the
screen displays.

I suspect that one or more pages is missing...in which case I'd try a
new 6264 RAM and, if not fixed, then either poke with a logic probe, or
find someone to fix it or replace it.

John :-#)#
--
(Please post followups or tech inquiries to the USENET newsgroup)
John's Jukes Ltd.
MOVED to #7 - 3979 Marine Way, Burnaby, BC, Canada V5J 5E3
(604)872-5757 (Pinballs, Jukes, Video Games)
www.flippers.com
"Old pinballers never die, they just flip out."
Eric-STNG
2022-01-23 16:11:25 UTC
Permalink
Post by John Robertson
I have a STNG game and my display is having an odd issue. It works fine when entering the settings menu, it tests out fine in the system test.
However, when i move to play the game, the display goes blank. if i move back to the settings menu, the display comes back.
I tested the pins on the Display and all the voltages appeared to be correct.
Once in a while it will work, but then freezes
Any suggestions?
Can you run the display tests in the Diagnostics menu? This covers the
various image "pages" that the DMD controller uses to generate the
screen displays.
I suspect that one or more pages is missing...in which case I'd try a
new 6264 RAM and, if not fixed, then either poke with a logic probe, or
find someone to fix it or replace it.
John :-#)#
--
(Please post followups or tech inquiries to the USENET newsgroup)
John's Jukes Ltd.
MOVED to #7 - 3979 Marine Way, Burnaby, BC, Canada V5J 5E3
(604)872-5757 (Pinballs, Jukes, Video Games)
www.flippers.com
"Old pinballers never die, they just flip out."
The Display tests out perfectly and as well as RAM Test OK. All the pages are there.

I am waiting on a ribbon cable to come, hopefully that is the issue.

Thanks,
Pin Del
2022-01-26 04:47:03 UTC
Permalink
Post by John Robertson
I have a STNG game and my display is having an odd issue. It works fine when entering the settings menu, it tests out fine in the system test.
However, when i move to play the game, the display goes blank. if i move back to the settings menu, the display comes back.
I tested the pins on the Display and all the voltages appeared to be correct.
Once in a while it will work, but then freezes
Any suggestions?
Can you run the display tests in the Diagnostics menu? This covers the
various image "pages" that the DMD controller uses to generate the
screen displays.
I suspect that one or more pages is missing...in which case I'd try a
new 6264 RAM and, if not fixed, then either poke with a logic probe, or
find someone to fix it or replace it.
John :-#)#
--
(Please post followups or tech inquiries to the USENET newsgroup)
John's Jukes Ltd.
MOVED to #7 - 3979 Marine Way, Burnaby, BC, Canada V5J 5E3
(604)872-5757 (Pinballs, Jukes, Video Games)
www.flippers.com
"Old pinballers never die, they just flip out."
The Display tests out perfectly and as well as RAM Test OK. All the pages are there.
I am waiting on a ribbon cable to come, hopefully that is the issue.
Thanks,
in & I'm wondering in its because the games have been sitting close to 2 years with out being playedI'm having the same problemon 2 of mt games that I just installed Nvrams on after the games sitting close to 2 years with out being played ?
I thought ribbon cables to,But thas is not the problem.

Pin-Del,
Pin Del
2022-01-26 05:03:08 UTC
Permalink
Post by Pin Del
Post by John Robertson
I have a STNG game and my display is having an odd issue. It works fine when entering the settings menu, it tests out fine in the system test.
However, when i move to play the game, the display goes blank. if i move back to the settings menu, the display comes back.
I tested the pins on the Display and all the voltages appeared to be correct.
Once in a while it will work, but then freezes
Any suggestions?
Can you run the display tests in the Diagnostics menu? This covers the
various image "pages" that the DMD controller uses to generate the
screen displays.
I suspect that one or more pages is missing...in which case I'd try a
new 6264 RAM and, if not fixed, then either poke with a logic probe, or
find someone to fix it or replace it.
John :-#)#
--
(Please post followups or tech inquiries to the USENET newsgroup)
John's Jukes Ltd.
MOVED to #7 - 3979 Marine Way, Burnaby, BC, Canada V5J 5E3
(604)872-5757 (Pinballs, Jukes, Video Games)
www.flippers.com
"Old pinballers never die, they just flip out."
The Display tests out perfectly and as well as RAM Test OK. All the pages are there.
I am waiting on a ribbon cable to come, hopefully that is the issue.
Thanks,
in & I'm wondering in its because the games have been sitting close to 2 years with out being playedI'm having the same problemon 2 of mt games that I just installed Nvrams on after the games sitting close to 2 years with out being played ?
I thought ribbon cables to,But thas is not the problem.
Pin-Del,
Sorry about the typos, I'm sitting in a dark room
Paul
2022-01-27 03:51:42 UTC
Permalink
Post by Pin Del
Post by John Robertson
I have a STNG game and my display is having an odd issue. It works fine when entering the settings menu, it tests out fine in the system test.
However, when i move to play the game, the display goes blank. if i move back to the settings menu, the display comes back.
I tested the pins on the Display and all the voltages appeared to be correct.
Once in a while it will work, but then freezes
Any suggestions?
Can you run the display tests in the Diagnostics menu? This covers the
various image "pages" that the DMD controller uses to generate the
screen displays.
I suspect that one or more pages is missing...in which case I'd try a
new 6264 RAM and, if not fixed, then either poke with a logic probe, or
find someone to fix it or replace it.
John :-#)#
--
(Please post followups or tech inquiries to the USENET newsgroup)
John's Jukes Ltd.
MOVED to #7 - 3979 Marine Way, Burnaby, BC, Canada V5J 5E3
(604)872-5757 (Pinballs, Jukes, Video Games)
www.flippers.com
"Old pinballers never die, they just flip out."
The Display tests out perfectly and as well as RAM Test OK. All the pages are there.
I am waiting on a ribbon cable to come, hopefully that is the issue.
Thanks,
in & I'm wondering in its because the games have been sitting close to 2 years with out being playedI'm having the same problemon 2 of mt games that I just installed Nvrams on after the games sitting close to 2 years with out being played ?
I thought ribbon cables to,But thas is not the problem.
Pin-Del,
If that were the case wouldn't doing a factory reset and or going back
to the factory ram clear the issue?

Paul
John Robertson
2022-01-27 05:16:54 UTC
Permalink
Post by Eric-STNG
Post by John Robertson
I have a STNG game and my display is having an odd issue. It works fine when entering the settings menu, it tests out fine in the system test.
However, when i move to play the game, the display goes blank. if i move back to the settings menu, the display comes back.
I tested the pins on the Display and all the voltages appeared to be correct.
Once in a while it will work, but then freezes
Any suggestions?
Can you run the display tests in the Diagnostics menu? This covers the
various image "pages" that the DMD controller uses to generate the
screen displays.
I suspect that one or more pages is missing...in which case I'd try a
new 6264 RAM and, if not fixed, then either poke with a logic probe, or
find someone to fix it or replace it.
John :-#)#
The Display tests out perfectly and as well as RAM Test OK. All the pages are there.
I am waiting on a ribbon cable to come, hopefully that is the issue.
Thanks,
I doubt the ribbon cable will sort this out, a simple test is to unplug
the ribbon cable from the sound board and move that end to the DMD
driver board. The ribbon cable from the DMD driver board to the DMD
display is working fine, no point in replacing it.

At this point I'm thinking something is wrong on the DMD driver board,
but would have to have it on my test fixture to pin it down. I have
suspects, but without tests this would be shotgun fixing which I hate.

Anyone closer to you that has tech skills and can look at your DMD
driver board?

John :-#)#
--
(Please post followups or tech inquiries to the USENET newsgroup)
John's Jukes Ltd.
MOVED to #7 - 3979 Marine Way, Burnaby, BC, Canada V5J 5E3
(604)872-5757 (Pinballs, Jukes, Video Games)
www.flippers.com
"Old pinballers never die, they just flip out."
tacxbo...@gmail.com
2022-01-27 14:26:46 UTC
Permalink
I have a STNG game and my display is having an odd issue. It works fine when entering the settings menu, it tests out fine in the system test.
However, when i move to play the game, the display goes blank. if i move back to the settings menu, the display comes back.
I tested the pins on the Display and all the voltages appeared to be correct.
Once in a while it will work, but then freezes
Any suggestions?
Where are you located? I agree with John, I'd be shocked if a new ribbon cable solves this. Also, are you running a standard DMD display, Pin2DMD, or other display?
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