Due to a large amount of spamers, accounts will now have to be approved by the Admins so please be patient.
×
- 0
IGNORED
Nichibutsu Moon Base sudden blank screen (but alive)
-
Recently Browsing 0 members
- No registered users viewing this page.
Question
cakeindustries
Hi folks,
New here, have come in search of assistance for my beloved Nichibutsu Moon Base Cocktail arcade (black and white with colour panes on screen).
I had it repaired quite some years ago in Melbourne (failed board) and it has been running perfectly since for about 8 years now.
I had some guests visit over the weekend, and one of them lifted the unlocked top and then dropped it back down again while the game was in play.
The screen went immediately blank, but the sounds continued.
Here is an image of the CRT output:
I've tested a few things to troubleshoot where the problem may lay, and can confirm the following:
- The board is alive, as inserting a coin runs the usual sound output and logic it seems
- I've turned up the brightness on the CRT controls to check that the CRT is still in action, and I get diagonal lines across the whole surface
- I've carefully reseated the game board socket and also checked the fuses to confirm all are seated and the fuses aren't blown
- I've checked thoroughly for any loose items hanging around and cannot find any
I build mechatronic sculptures and often build circuitry and logic with Arduinos, so I know my way around certain things, but I'm very unfamiliar with troubleshooting this kind of circuitry, and haven't worked much with high voltage or CRT based stuff.
Can anyone offer any kind of assistance in what are the next steps to check and try to find where the fault lies?
I would assume that confirming that the game board is outputting video would be the next step, but I'm unsure how to do that. Is it a standard composite video output from the board with the B/W CRT? I have downloaded some manuals for the machine that I can refer to to find certain pins (pin 26 appears to be video out, pin 19 appears to be color sync, possibly unused with B/W monitor?).
How can I check for this video output?
Very thankful in advance to learn this, rather than send it off for repair (I now live 2 hours west of Melbourne) as I'm keen on learning for future machines some basic troubleshooting.
Jesse
Link to comment
Share on other sites
22 answers to this question
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now