As mentioned in a previous thread (same machine, different issue) we have added a 1982 Williams Joust Machine. We dragged it home two days ago and after a lot of trial and error it is now beginning to show signs of life.
Now when powered on the segmented LED shows "0" with no error codes as shown in Pic 1. There are two of three led's solid on another board as depicted in Pic 2. The middle Led (#2 is off if that is significant). I think all that behavior is normal, but I could be wrong.
The game will coin up but has no display, not even the characters in Pic 3. The monitor is a WG 19vjtp22 model. I think its playing blind (as opposed to attract mode) but the noises and sounds on this game are very random.
So the game will play when coined up but absolutely no display even from its first boot. But here is the particularly odd thing: once started, if I hit the hard reset button on the upper left corner of the board (straight up the board above the bank of batteries), it will display some characters on the monitor as depicted in Pic 3. The characters will stay on for about a minute and then the monitor will go completely blank again and the behavior cycles over again.
Any suggestions where to go next? I surmise that this is not a monitor problem, but am I right about that?
Also, I'm aware that there's a diagnostic function. I cant see a readable test screen or counter when using the the test buttons but can get it to display with what I thinks is a garbled rug pattern underneath as shown in Pic 4. That will stay for as long as I will allow it (I let it go for about 10 minutes one time) but that pattern will go out if I coin the game and the cycle will start over.
I hope to hear some ideas and as always appreciate the help and insight.
Now when powered on the segmented LED shows "0" with no error codes as shown in Pic 1. There are two of three led's solid on another board as depicted in Pic 2. The middle Led (#2 is off if that is significant). I think all that behavior is normal, but I could be wrong.
The game will coin up but has no display, not even the characters in Pic 3. The monitor is a WG 19vjtp22 model. I think its playing blind (as opposed to attract mode) but the noises and sounds on this game are very random.
So the game will play when coined up but absolutely no display even from its first boot. But here is the particularly odd thing: once started, if I hit the hard reset button on the upper left corner of the board (straight up the board above the bank of batteries), it will display some characters on the monitor as depicted in Pic 3. The characters will stay on for about a minute and then the monitor will go completely blank again and the behavior cycles over again.
Any suggestions where to go next? I surmise that this is not a monitor problem, but am I right about that?
Also, I'm aware that there's a diagnostic function. I cant see a readable test screen or counter when using the the test buttons but can get it to display with what I thinks is a garbled rug pattern underneath as shown in Pic 4. That will stay for as long as I will allow it (I let it go for about 10 minutes one time) but that pattern will go out if I coin the game and the cycle will start over.
I hope to hear some ideas and as always appreciate the help and insight.
