Whats wrong with Tron?

Iluvcars

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last night I was playing Tron and everything was working fine. However, the sound wasnt working. But, its never really worked since i got it. There seemed to be a short in the sound as I could hear the game really faintly but was garbled by speaker noise. The wires from the speakers were disconnected and some were twisted together. When I grabbed a hold of the wires to untwist them and seperate them the speaker noise got really loud and then went silent. There were 4 wires from the harness and 4 wires coming from the speakers. Two green with black stripes and two white (one with red stripes and 1 with purple stripes). I asked for help earlier as to which wires go with what wires but before I could check the diagram that was sent to me the game had gone from good to bad. Just with grabbing the wires what were already twisted together. Now the game doesnt play, the screen is different colors of pink and grey. There is no more sound at all from the speakers and the coin door lights are no longer lit up. Any idea what happened or what I can start checking? I dont know if something happned to the boards because I could never hear the game play so I dont know if its a monitor thing, I cant see or hear if it coins up. I checked the fuse on the power supply as well as the two on top of the filter assembly. They all looked good. The marquee lights up and so does the black light. Please help!!!
 
You may have knocked something loose while you were messing around in there. TRON is a touchy game. Reseat the cables on the PCB. TRON is well known for interconnect problems - those flat ribbon cables that join the boards in the stack together. Have those been replaced?

As for the sound - were you getting a horrible loud hum right before it went out?

The coin door lights and the sound amplifier are both powered from the same part of the power supply - there is a separate fuse just for this. Check the light sockets on the coin door very carefully for loose or broken wires. If one of the wires falls off a socket and touches the metal coin door, you'll get that horrible hum for a bit until it blows the sound fuse.

-Ian
 
I knew a fighter pilot once who said "if you move the stick to the left and the plane does something diffrent or strange, move the stick back to where it was".

This may not help in your case and you may do more harm than good if you put things back the way they were.

I don't know about Tron but my game is using the +12 for the coin door lights and the sound amp. Also in radio equipment many times the sound/volume pot being dirty will give low volume and if you turn back and fourth several times may fix.
 
Yes, when i touched the wires together the sound was really awful and really loud. I went to go turn it down and the volume control nob made no difference. Either way I turned the volume control nob, the sound was the same. Then it went out.
 
Yes, when i touched the wires together the sound was really awful and really loud. I went to go turn it down and the volume control nob made no difference. Either way I turned the volume control nob, the sound was the same. Then it went out.

That is NOT a good thing.

Pics of the wires and connections would help
 
So, since my two tigers needs a D5 eprom burned, I decided to check and see if the tron boards would work in the two tigers game. Just wanted to see if I did something to the boards or not. Turns out, Tron fired right up. So, that narrows the issue with my other Tron cabinet down to either a power supply or a monitor issue.
 
You may have knocked something loose while you were messing around in there. TRON is a touchy game. Reseat the cables on the PCB. TRON is well known for interconnect problems - those flat ribbon cables that join the boards in the stack together. Have those been replaced?

As for the sound - were you getting a horrible loud hum right before it went out?

The coin door lights and the sound amplifier are both powered from the same part of the power supply - there is a separate fuse just for this. Check the light sockets on the coin door very carefully for loose or broken wires. If one of the wires falls off a socket and touches the metal coin door, you'll get that horrible hum for a bit until it blows the sound fuse.

-Ian

Thank you for posting this I was having the same problem with the horrible loud hum on my domino man and your post saved me allot of trouble shooting Now all I have to do is fix the short on the coin door
 
I never advise this, because I always thought it was bullshit, but if you have power supply problems in a TRON, it's probably time to change those two huge caps in the power supply. Everybody says to do it on Atari's, I've rarely had any trouble out of them... but I fixed two Trons, at the same time, that were definately fucked up because of the blue caps. What these were doing, was they'd boot up, then start crashing, the sound would die, the screen would get more trash than usual on it, etc.

Now, since you touched wires together that shouldn't have been together, you probably fried some shit. but if you rewind time back to yesterday before you did that, the problem originally was probably the two big blue capacitors in the bottom that feed the power supply board.
 
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