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This troubleshooting page will help you diagnose problems with the Logitech Harmony 900.
Shop Logitech Harmony Companion (Remote Control and Smart Hub) Black at Best Buy. The setup software used to be a download for your computer but now that Mac OS requires 64 bit, you have to use your mobile device or a Windows machine. We had a Harmony 900 for over 8 years which gave out after being dropped too many times. To replace it. We provide Repair Services for your Logitech Harmony 900. LCD/screen replacement, button repairs, tilt-sensor upgrades, charging repairs and more! Home Repairs Parts For Sale Support. Harmony 900 Swollen Battery Removal Service $38.00 $38.00 Harmony 900 Button Replacement Service $28.50 - $54.00 $28.50 - $54.00. Jul 16, 2012 Alex at Lelch performing a Logitech Harmony 900 Demo. Category Howto & Style; Song Thunder Road - The Song (Live at the Hammersmith Odeon, London, UK - November 1975).
Battery Not Charging
This issue occurs when the light on the cradle base comes on but the remote will not power on or if the screen does not show the battery charging icon.
Swollen Battery
A known issue with the Logitech Harmony 900 is battery swelling. This is when the battery expands in size and stops working properly. If you have a swollen battery it will need to be [invalid guide link].
Faulty Charger
A faulty charger may occur if the cable gets frayed or the wire is exposed. You can tell that the issue is a faulty charger if the light on the cradle base does not come on when plugged in. The charger may need to be replaced.
Cradle Base Light Indicator Not Working
This issue occurs when the remote’s screen shows the battery is charging (remote still works) but the charge indicator on the cradle base does not light up.
Broken LED Light
If the white light on the cradle base is not lighting up when plugged in then it is most likely a broken LED. Consider replacing the LED light.
Faulty Wire Attached to LED LightLogitech Harmony Software Windows 10
If the cradle base light still does not work after replacing the LED, then the issue is most likely a faulty wire attached to the LED light and can be fixed.
Blank Screen (Black/White)
This issue occurs when the screen is frozen and showing up black or white.
Screen Stops Working After a Software Update
The screen might turn black or white if you have recently done a software update and can be fixed.
Broken Screen
A broken screen may occur if the remote is frequently dropped or banged. Dropping the remote may cause a hardware issue that is due to poor solder connections on the circuit board coming apart upon impact. This can be fixed using a procedure called solder reflow. Another issue may be a cracked/damaged screen which occurs when the glass appears fractured and/or splintered. The screen may need to be replaced.
Device Not Responding to InputLogitech Harmony 900 Remote Software Mac
This issue occurs when the device is unresponsive to touch.
Software Issue
The most likely caused of unresponsiveness to touch is a software issue. A software issue is caused by a communication failure between the device and the circuit board. This can usually be solved with a restart and an update.
Defective Buttons
Individual buttons may become stuck in a partially pressed position. To tell if a button is stuck, compare the sensitivity of the button press with other buttons. This issue can be fixed by massaging the defective button until it pops back into place. If the buttons are severely damaged, they can be replaced by following this guide.
Broken Button Circuit Board
If you have tried a restart and most of the buttons do not appear defective but the device still is not responding, you may have a broken button circuit board. This is most likely caused by dropping the device and can be replaced.
IR Signal Transmission Not Receiving
If all the above do not solve the issue, it is most likely an IR signal transmission problem. An IR signal transmission is the signal between the remote and the devices it is controlling.
Touch Screen Freezing During Use![]()
The remote's touch screen stops responding to your touch.
![]() Software Issue
If the remote's touch screen suddenly freezes during use then it is most likely a software issue. Consider restarting and updating the device.
Device Will Not Turn On
This issue occurs when the remote fails to start despite being fully charged.
Firmware Issue
A firmware issue occurs from a short in the software that is embedded in the remote. Failure to turn on is most likely caused by the corrupted firmware. This can usually be solved by simply reapplying the firmware.
Faulty CPU Connections
If you have tried reapplying the firmware and the device will still not boot, the issue is probably a poor motherboard connection. These connections are generally weak and can be broken by dropping the device. An easy solution to this problem is to place a shim to stabilize the board. To fix this issue, follow this guide.
DOWNLOAD OPTIONS
IMPORTANT
We have discovered a problem with Harmony Desktop and syncing. This is impacting customers on mac 10.15.4. Please download the latest version of Harmony Desktop by clicking on 'Using Harmony without a hub?' below.
NOTE: Ensure that the old version of Harmony Desktop is closed or uninstalled before installing the new version.
Using macOS 10.15 Catalina?
As of macOS 10.15 Catalina, 32-bit software such as MyHarmony and Logitech Harmony Remote legacy software will no longer run and will require an update for it to work. If you’re using a hub-based remote, you will need to use the Harmony app on your iOS or Android device. You can also continue to use MyHarmony on a computer running Windows or macOS 10.14 or lower. If you have a remote that doesn't use a hub, you may download the latest software using the links on this page.
See Harmony and macOS Catalina for the latest information.
Logitech Harmony 900 Software DownloadUpgrading to macOS 10.15 Catalina?
As of macOS 10.15 Catalina, 32-bit software such as MyHarmony and Logitech Harmony Remote legacy software will no longer run and will require an update for it to work. If you’re using a hub-based remote, you will need to use the Harmony app on your iOS or Android device. You can also continue to use MyHarmony on a computer running Windows or macOS 10.14 or lower.
If you have a remote that doesn't use a hub, you may come back to this page and download the latest software once you have upgraded to Catalina, your operating system and version will be detected by the page and you will be provided with the correct software for your Mac.
See Harmony and macOS Catalina for the latest information.
Logitech Harmony 900 Driver
Use the MyHarmony desktop software or Harmony mobile app* to set up and sign into your account. From there, you can add devices, set up Harmony Activities, and make changes to your configuration. If you have a Harmony hub-based product, use the Harmony mobile app to set up and configure Harmony.
If you're using an older Harmony remote model, such as Harmony One, 880, 900, 1000, or 1100, see: Logitech Remote Software v7.x
*You must have a hub-based product to use the Harmony mobile app.
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