DR.J Professional HI-04 Motherboard Replacement

Written By: Baron Dutra
  • Comments: 2
DR.J Professional HI-04 Motherboard Replacement

Difficulty

Moderate

Steps

7

Time Required

45 minutes - 1 hour

Introduction

Use this guide to replace the motherboard in a DR.J Professional HI-04 if the device is will not power on or is giving a motherboard error code. This guide can also be used to replace the I/O board as it is directly attached to the motherboard.

The motherboard is what allows the device to run at its expected performance. A broken or faulty motherboard can be the result of the device not powering on and working. This can be caused by a loose connection or broken motherboard.

Before using this guide, be sure to review the troubleshooting page. Sometimes the device may not power on due to it not getting enough power. But if the motherboard is broken it will need to be replaced.

Before you begin, turn off the device. Additionally, give it time to cool off if you have used it recently.

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    • Flip the projector so that the bottom is facing up.

    • Remove the eight 10.0 mm screws with a Phillips #0 screwdriver.

    • The screws are set deep in the holes. Be careful not to drop the screws.

    • Remove the two 20.0 mm screws with a Phillips #0 screwdriver.

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    • Flip the projector so it is upright.

    • Remove the top case of the projector.

    • The top case should come off fairly easily but be gentle while removing it.

    • Don't yank the top case off as there are cables attached to the motherboard and the top case.

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    • Remove the three pieces of tape securing cables.

    • Keep the tape for reassembly.

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    • Use a Phillips #0 screwdriver to remove the four 15.0 mm screws from the motherboard.

    • Be sure to not drop the screws in the device as they can be difficult to recover.

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    • Squeeze the tab against the connector, and pull the connector straight out from the socket.

    • The cable will come out easily so do not pull too hard.

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    • Lift the motherboard from the device.

    • Use the tip of a spudger or your fingernail to flip up the small locking flap of the ZIF connector.

    • Pull the cable from the connector.

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    • Set down the motherboard safely.

Conclusion

To reassemble your device, follow these instructions in reverse order.

Author

Baron Dutra

Member since: 01/11/23

825 Reputation

2 comments

Baron, thanks for the guide. My projector took a tumble and landed right on the back where the input/power plug is. I plugged it back in and the red light turns on, but that's all. I don't hear any loose parts and it definitely wasn't overheated. Any ideas on what it could be? Trying to get the right screwdriver to open it up later this week.

Socev -

Baron, where would I find a replacement mother board?

Thanks

Stew

Stewart Debbie Greer -