Build Your Own Arcade Controls Forum

Main => Monitor/Video Forum => Topic started by: bjk7382 on June 24, 2005, 02:15:41 pm

Title: Help with space invaders monitor
Post by: bjk7382 on June 24, 2005, 02:15:41 pm

Okay let me start at the beginning when I got this game for cheap, non working. It had a couple shorted components on the power supply, so I replaced that and got it working for about 3 minutes. Then half the monitor collapsed (worse than what is in the pic, it was just a vertical line with a small amout of picture coming out the side). I replaced the capacitors, and a bad 5k pot on the vertical size, but it didn't give me any more deflection. I also did power on voltage checks according to the monitors manual and they check out great. I also checked all the transistors out of circuit, and all the resistors in that section.

The entire picture looks like it is there now, but it is just folded over really bad.

I am really pulling my hair out trying to solve this problem. Since the game is fully working with sounds and everything, I just want to play it! :D I have the scematics and manual which helps tell me what voltages are supposed to be where, but I just can't find any that are off.

BTW this monitor is a WG19V1001 and the schematics/manual can me found at Randy Fromm's site (http://slot-tech-ftp.serveftp.com:8080/technical_department/)

Any tips on where to go next would be greatly appreciated.

Title: Re: Help with space invaders monitor
Post by: babydickonboard on June 27, 2005, 04:48:43 pm

I'm also interested in any information about this problem, as i am currently working on fixing up a space invaders cab and im having monitor problems.

Title: Re: Help with space invaders monitor
Post by: AlanS17 on June 27, 2005, 04:57:55 pm

*RAISES HAND*

I think half the people on this board have a Space Invaders in disrepair.  ;)

Title: Re: Help with space invaders monitor
Post by: bjk7382 on June 27, 2005, 07:50:28 pm

Well at least I know I am not alone :)

I was hoping when I bought the thing that it would be an easy power supply fix, since the PS board was cracked on one side. After I fixed that, I had it working for a few minutes and then some components on the monitor blew out. It eventually got down to just a vertical line, and now I have it back to what you see in the pic. I have done a lot of testing and I am getting kind of sick of looking at this, and not being able to figure it out.