How to Stabilize the Logitech Harmony 900 Motherboard

Written By: Tyler Hanks

Comments: 4

How to Stabilize the Logitech Harmony 900 Motherboard

Difficulty

Moderate

Steps

Time Required

30 minutes

Introduction

This guide will show you how to stabilize the motherboard of the Logitech Harmony 900 by placing a shim on the CPU. This guide is designed to solve the problem of device not starting due to bad CPU connections.

Tools

Step 1

Press the oval shaped button on the lower back of the remote to release the battery cover.
While pressing the button, remove the cover.

Step 2

Push the battery in, pull it up, and slide it out.

Step 3

Using tweezers, peel off the sticker located under the battery cover to reveal two screws.

Step 4

Locate and unscrew the four 50mm screws using the Philips #0 screwdriver.

Step 5

Use a credit card to pry the black, plastic, back cover off of the device.
You may need to get the process started with a metal prying tool before you start using the credit card.

Step 6

Locate the three 50mm screws on the back of the remote and remove them using the Phillips #0 screwdriver.

Step 7

Pry the black, front face of the remote from the back silver part by inserting a credit card in between and sliding down.
Again, you may need to use a metal prying tool to get the separation started.

Step 8

When you look at the circuit board, you should see a ribbon attaching the board to the plastic casing.
A little lever is holding the ribbon in place. Lift the lever with your nail or a 2.5mm flat-head screwdriver. Move the ribbon away from the circuit board.

Step 9

Using the Philips #0 screwdriver, remove the three 50mm screws from the circuit board.

Step 10

Using your hands, carefully separate the motherboard from the rest of the remote.

Step 11

Fold a small piece of paper several times until you have a shim about the size of a penny.

Step 12

Place the shim on the CPU, which is the top leftmost black box on the motherboard.

While the repair does work, had the author bothered to state how big a piece of paper to start with, how many times to fold it, how thick it should be when one is done folding the paper, why one should remove the mother board when the CPU chip is exposed when the back is taken off & etc. then I probably would have given him the 30 points.

Jz Lauratis - 30/01/22

Conclusion

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

Author

Tyler Hanks

Member since: 25/09/17

442 Reputation

3 comments

Bought this remote at Goodwill for $15. Repair went flawlessly in 10 minutes. THANKS!!!!!!

Scott Casey - 20/09/18

Hello Tyler,

If you are going to place the shims on the top of cpu, why you have to remove the motherboard completely with screws and ribbon cable from the remote?

Thanks

Daniel Leprince - 30/09/19

Sweet fix thought mine had died

Sean Garbe -