Problem TRON Board Errors - Help Needed

[JohnT]

Hi - I've got a Tron machine that came 'non-working' so looking for some guidance.

Video:

Couple of things I've done so far:
- Good clean
- Replaced crumbling connectors
- Replaced Tant caps - The power board had a burnt out inductor at L116 caused by a shorted cap so replaced that too
- Voltages all seem ok
- Had the G07-CBO Monitor fixed up, new flyback, caps replaced and confirmed fully working

Problems I'm seeing:
- On startup there's a 'Sound Board Interface Error' message, which disappears and the game 'loads'
- Screen is upside down - it was the other way up - I've seen some posts about this possibly being because of an issue on the sound board?
- There's artifacts/garbled graphics on the screen, across the middle of the screen (as can be seen in the video)
- There's something off with the blue colour (I think) - I have to adjust the monitor to even see anything that's in a blue colour, so any text etc but something's not right.
- No sound at all - swapped out the amp board for a known working one and still no sound

Any guidance on where to start would be appreciated!

 

[JohnT]

I did some more work on this today, re-seated the socketed chips, noticed a couple of dry solder joints on the edge connectors so did some reflowing and had some success. I also thought the video connector cable to the game board was too loose so I replaced the connector.

The Good
- The Sound Board Interface Error is now gone and the machine has sound
- Volume pot, test switch and credit button now working
- Joystick, P1 & P2 buttons working

The Less Good
- The spinner isn't working at all - I've checked connections and there's no input at all so need to look into this
- There's something not right with the blue colour - I've had to crank the blue pot to pretty much max on the monitor neck board and there's a strange blue tinge to parts of the screen. In the video below you can also see that the middle of the screen becomes almost 'smudged' part way through for some reason.

I've got a TPG but need to make up a cable to be able to hook it up to the G07 monitor, just to rule that out, but wondered if anyone has come across this colour problem with a Tron board before and has any idea what could be causing it.

Some vids below:

Video of some Tests:

Video of gameplay: