Tengugurl
Cheng's Errand Boy
- Joined
- Feb 9, 2017
- Posts
- 111
Hi there!
Gosh, loving it here everyone is super helpful with my SuperGun Pet project, thanks in advance as I am just a gal with the internet at my disposal and some basic soldering skills.
Quick Background:
I am making a SuperGun to power my MVS (With the MVS pinout on the JAMMA harness (silly I know but I can't find a JROK that is available for purchase and a SuperGun is cool enough for now)
I am getting RGB, - and Sync signals from the board converted to a CGA to VGA adapter (You know, the ones from China?)
I have the original MVS JAMMA Harness and I can switch back and forth to check if I broke something lol (The images come up perfectly if I use the stock Harness)
The Problem:
1) The screen is showing blocky graphics (aka Watchdog)
2) I checked the PSU connections (5V+, 12v (no need for -5v on MVS) and I am getting a solid connection
3) Checked my on/ off switch and there is no bottleneck in power flow.
4) Power draw off the MVS is solid (Soldered a cable off the 5v+ Cap behind JAMMA pin 4-5)
5) Cleaned the cart contacts and the pin connectors on the MVS
What do you think it could be?
Its not a screen of death as the MVS works fine in the original MVS JAMMA harness
I can check power once more??
Its almost as if there is a power issue?
Looking forward to hearing your ideas
-Tengugurl
Gosh, loving it here everyone is super helpful with my SuperGun Pet project, thanks in advance as I am just a gal with the internet at my disposal and some basic soldering skills.
Quick Background:
I am making a SuperGun to power my MVS (With the MVS pinout on the JAMMA harness (silly I know but I can't find a JROK that is available for purchase and a SuperGun is cool enough for now)
I am getting RGB, - and Sync signals from the board converted to a CGA to VGA adapter (You know, the ones from China?)
I have the original MVS JAMMA Harness and I can switch back and forth to check if I broke something lol (The images come up perfectly if I use the stock Harness)
The Problem:
1) The screen is showing blocky graphics (aka Watchdog)
2) I checked the PSU connections (5V+, 12v (no need for -5v on MVS) and I am getting a solid connection
3) Checked my on/ off switch and there is no bottleneck in power flow.
4) Power draw off the MVS is solid (Soldered a cable off the 5v+ Cap behind JAMMA pin 4-5)
5) Cleaned the cart contacts and the pin connectors on the MVS
What do you think it could be?
Its not a screen of death as the MVS works fine in the original MVS JAMMA harness
I can check power once more??
Its almost as if there is a power issue?
Looking forward to hearing your ideas
-Tengugurl
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