Dragon's Lair Fans - Arcade Lifestyle

General Chat => Technical Area => Topic started by: ckong on June 24, 2015, 06:54:35 PM

Title: Black Widow wants to play in the dark
Post by: ckong on June 24, 2015, 06:54:35 PM: Guys, I have a small problem with Black Widow and that is that the game plays blind. I know that the chassis is working because the 2 leds on the LV2000 light are on and there is neckglow. I can start and play a game, just in the dark, the screen remains dark. I checked all connectors and the neckboard, but didn't find anything strange. What is next to check?
Title: Re: Black Widow wants to play in the dark
Post by: ckong on June 27, 2015, 06:35:50 PM: OK, I could use some technical input here. :) I powered the game again today and increased the screen pot a bit. This is what I then see on the tube, a blue-ish line:

(http://i50.photobucket.com/albums/f307/ckong65/Black%20widow/P1070811_zpso856uwhj.jpg) (http://s50.photobucket.com/user/ckong65/media/Black%20widow/P1070811_zpso856uwhj.jpg.html)

which after a second or so became just a dot:

(http://i50.photobucket.com/albums/f307/ckong65/Black%20widow/P1070812_zpscxiw7xnb.jpg) (http://s50.photobucket.com/user/ckong65/media/Black%20widow/P1070812_zpscxiw7xnb.jpg.html)

??

I quickly turned down screen again. Here is a picture of the chassis:

(http://i50.photobucket.com/albums/f307/ckong65/Black%20widow/P1070809_zpsb7wlp5t5.jpg) (http://s50.photobucket.com/user/ckong65/media/Black%20widow/P1070809_zpsb7wlp5t5.jpg.html)

It has the LV2000 light installed. Could this be a cause for the problem? I don't suppose so.
Title: Re: Black Widow wants to play in the dark
Post by: ckong on June 27, 2015, 09:25:16 PM: OK, let's get out the WG chassis and do a visual check. Hm, this isn't good, 2 wires broken loose from the PCB!

(http://i50.photobucket.com/albums/f307/ckong65/Black%20widow/P1070822_zpsakunpy18.jpg) (http://s50.photobucket.com/user/ckong65/media/Black%20widow/P1070822_zpsakunpy18.jpg.html)

Will resolder them and then see what happens.
Title: Re: Black Widow wants to play in the dark
Post by: Laszo on June 29, 2015, 09:29:50 AM: Quote from: ckong on June 27, 2015, 09:25:16 PM
OK, let's get out the WG chassis and do a visual check. Hm, this isn't good, 2 wires broken loose from the PCB!

(http://i50.photobucket.com/albums/f307/ckong65/Black%20widow/P1070822_zpsakunpy18.jpg) (http://s50.photobucket.com/user/ckong65/media/Black%20widow/P1070822_zpsakunpy18.jpg.html)

Will resolder them and then see what happens.

Well an easy fix.... Just put them on the right spot 8)
Title: Re: Black Widow wants to play in the dark
Post by: ckong on June 29, 2015, 01:21:16 PM: Indeed, easy fix, resoldering the wires. Unfortunately it didn't help, the game still has the same issue. ???

This will need further investigtion.
Title: Re: Black Widow wants to play in the dark
Post by: pobtastic on June 29, 2015, 07:09:21 PM: The first thing to check is that you have 180V on pin 5 of P900, next check you have +/- 28V on pins 1/8 of P900. It'll narrow down exactly what needs replacing.
Title: Re: Black Widow wants to play in the dark
Post by: ckong on June 29, 2015, 08:50:51 PM: Thanks, I will do that. I found an error diagnose chart which I am planning to follow and that suggests the exact same thing to check.