p1899m
New member
So my tron has had an issue with the spinner for a while. Basically the spinner would not smoothly rotate the on screen arm 360 degrees. The arm would bobble around the 12, 3, 6 ,9 o clock positions. Other than this the game worked fine. I tested the spinner in another tron and it worked fine so spinner is not the issue. I suspected that I had a voltage issue and had my eye on the big caps on the power supply as the likely culprit. So today I turned the game on to be sure it was still working then swapped the big caps. I should note here that I swapped the wiring correctly. I know because I checked it against my other tron.
So I power up and the monitor is on but no image or sign of life from the board set. I should mention I smelled a very light hint of electrical burn but found no component that looked burnt.
I check voltages at the linear PS and I have no 5v.
I test the PS board in my tapper and it works fine so this board is not the issue.
Tested all fuses and they all checked out.
I have more testing to do to try and determine where the problem lies but here is what I noticed so far.
Voltage coming in to the cab after the line filter is 118v at the monitor it is 121v. I thought this was odd.
I may possibly be testing this wrong but I got no voltage at any of the pins at j3 on the linear PS. I did get proper voltage at J6 for what it's worth.
I haven't tested the iso yet but I'm thinking it may be working ok since the monitor has power as well as all lights including coin door.
There are two components in the tron power supply that I don't recognize off hand. One is a large black metal thing with wires coming off it (real descriptive right) that sits on the left side nearest the back of the cab. So looking into the cab from the back it is the component closest to you on the left side. The other component sits inbetween the two big caps and the iso. It's silver sort of rectangular shaped but with rounded off corners and of course wiring coming off of it.
Anyone know what these are and how/ where to test them? Also if one of these is bad are there replacement parts?
In general does anyone know where the issue might be and what I should check?
Thanks, Dan
So I power up and the monitor is on but no image or sign of life from the board set. I should mention I smelled a very light hint of electrical burn but found no component that looked burnt.
I check voltages at the linear PS and I have no 5v.
I test the PS board in my tapper and it works fine so this board is not the issue.
Tested all fuses and they all checked out.
I have more testing to do to try and determine where the problem lies but here is what I noticed so far.
Voltage coming in to the cab after the line filter is 118v at the monitor it is 121v. I thought this was odd.
I may possibly be testing this wrong but I got no voltage at any of the pins at j3 on the linear PS. I did get proper voltage at J6 for what it's worth.
I haven't tested the iso yet but I'm thinking it may be working ok since the monitor has power as well as all lights including coin door.
There are two components in the tron power supply that I don't recognize off hand. One is a large black metal thing with wires coming off it (real descriptive right) that sits on the left side nearest the back of the cab. So looking into the cab from the back it is the component closest to you on the left side. The other component sits inbetween the two big caps and the iso. It's silver sort of rectangular shaped but with rounded off corners and of course wiring coming off of it.
Anyone know what these are and how/ where to test them? Also if one of these is bad are there replacement parts?
In general does anyone know where the issue might be and what I should check?
Thanks, Dan

