(Topic ID: 145932)

Need some help, installing Color DMD on TSPP!!


By rai

3 years ago



Topic Stats

  • 63 posts
  • 18 Pinsiders participating
  • Latest reply 3 years ago by QuarterGrabber
  • Topic is favorited by 6 Pinsiders

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#13 3 years ago

Power isn't on at the Whitestar board (LED is off). This comes from the high voltage DMD connector and should remain plugged in. Make sure the high voltage connector that normally powers the old DMD is tucked away safely so it can't short against anything.

#18 3 years ago

The connections look correct. It's possible you have shorted something out on the Whitestar DMD controller board.

The high voltage connector is the one that plugs into the original DMD. There's a separate small board that creates the high voltage for the DMD. The same board provides 5V to the Whitestar DMD controller. You'll need to keep the original DMD connector tucked away so that high voltage does not come in contact with any of the other boards in the backbox.

Since the LED on the Whitestar DMD controller board isn't lighting, it suggest that either 5V isn't getting to the board, or something on the Whitestar board has shorted out.

#23 3 years ago

Can you get a close up of the Xilinx chip on the Whitestar board. Looks like there's a dark spot on it. Please make sure it's not a burn mark.

#48 3 years ago

Removing the fuse will cut off the high voltage but the cable is still grounded and electrically connected to the DMD power supply board. You should still tie back the old DMD power cable to ensure it doesn't come in contact with any of the boards in the backbox.

#54 3 years ago
Quoted from Jgaltr56:

Agreed. So Dmod said to not let the high voltage cable come into contact with any board. Sounds like an accident waiting to happen if high voltage can jump through insulation and blast a hole in a chip. Is that what happened here? The instructions do say to remove the cable but nobody ever does.

High voltage won't jump through the insulation. The IDC connectors used for DMD power cables have exposed metal contacts. A problem can result if the connector comes in contact or very close proximity to the circuit board. An accidental short or excessive voltage on the board can cause a chip to fail and become very hot, resulting in a burn in the package.

On WPC games, we recommend completely removing the high voltage wire harness from the game. You can alternately pull fuses and/or disconnect the harness from the DMD controller board, but this doesn't fully protect against a connector coming in contact with a board and shorting against something.

On Whitestar games, you can't remove the high voltage harness because 5V and Ground for the Whitestar board come through the same harness. You can remove the fuse from the DMD power supply board to reduce the chance of a problem, but still need to make sure the connector is tied back away from the boards to prevent an accidental short.

#56 3 years ago
Quoted from ChadH:

Can someone give clarification on exactly which fuse to remove? Maybe provide a picture? I'd like to do the same on my TSPP.

The fuse QuarterGrabber is referring to is the one on the DISPLAY POWER SUPPLY board shown in post #11.

WARNING!! This is a high-voltage board so make sure the power to the game is off before touching/removing any fuses.

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