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Visit the site named 'Electro-help' for
more details. Click this link. View it in Timeslide or Flipcard
option, which can be selected from the drop down box menu by the Sidebar tag,
at the top left corner of the display window. You can also click the Home tab to see the latest
updates. It will make search
easier. There are more than 1400 posts
to different brand TVs till now. Setup
proceedings and code list to different brand remote controls also
included. Pull up older posts or do a
search by type in the Brand Name of your device in the Search Box,
at the top right of the display window. Check this link too.
If all other buttons work, and only guide button doesn't, your remote control need cleaning. Visit the site named 'Electro-help' for
more details. Check this link and
select the site named above. View it
in 'Flip card' option, which can
be selected from the drop down box menu at the left top corner or the display
window. It will make search easy. Some times, the ads attached with each posts
might help you to find the availability of spare parts. There are more than 625
posts to different brand TVs. Pull up older posts there. Details about how to clean a remote control is given in detail.
Try using the code search function as detailed in your user manual. If you can't find your user manual, it can also be downloaded from the link I provided. Occasionally codes for a different brand will work - not often, but it's worth a try.
You probably have the input selected to cable for the Activity that you are using.
In the software, click 'Settings' beside your activity then click 'Review the settings for this Activity'. Then, go through the setup wizard and make sure the input for the Activity is selected as 'HDMI'.
You can try this solution to your Harmony 550 Safe mode problem:
Harmony 550 Safe Mode Fix
Mode is a diagnostic tool in the Remote used for troubleshooting
purposes. If the words "Safe Mode" or "Safe Mode Requested" appear on
the remote, complete the following steps:
1. Ensure the Remote is in "Safe Mode Requested" by taking out the batteries, and disconnecting the remote from the USB cable.
2. Hold down the Off button and plug the remote into the USB.
3. Continue holding down the Off button for another 10 seconds. The remote should then display the words "Safe Mode Requested".
4. With the unit in "Safe Mode Requested", re-install the firmware by clicking Support on your home page.
5. Click Firmware in the Downloads section and follow the online instructions to upgrade the firmware.
6. Once the firmware upgrade is complete, click Update My Remote.
7. Insert new batteries into the remote.
To add or remove an Activity, click Add an Activity or Remove an Activity. • To customize an Activity, click Customize next to an Activity icon, and then click the appropriate option. • To change the names of Activities click Customize next to the Activity icon, and then click Rename Activity name. • To have more than one Activity of a given type (e.g. If you have both a cable converter and a satellite receiver, you can add a second Watch Television Activity) click Add an Activity. When you're done, rename the Activities to help you distinguish between them (e.g. For the Watch Television Activity you could rename one "Watch Television" to "Watch Cable" and the other to "Watch Satellite
Actually, there is a setting in the cable box for this. You hit the settings button on the remote TWICE, then scroll down to Viewer:Power On. Click on what channel (or last channel) you want it to go to when you power on. Hope this helps. I have the 8300 HDC DVR.