Enter channel number of double digits?

If you wish to buy its original remote control, contact the authorized service centre, or authorized dealer to your device brand. They can either give you a genuine remote control to your device, or can direct you, from where can you purchase a suitable one.
To select a proper universal remote control, you should know about the number of digits to its set-up codes. There are 3 digit, 4 digit, 5 digit, 2 digit and even single digit codes, to some brand devices. After confirming this, check the sites linked here. Both the sites have set-up code list and set-up procedure to many popular brand remote controls. Check which brand remote control has set-up code/s to your device brand, and buy that one according to availability. Brand name of the remote control isn't a matter, but it should have set-up codes in its code list, to the device brand you have.
Please note: Every new universal remote control will have set-up code list, and set-up procedure along with its pack. Never accept a remote control, that hasn't both of this. For more details about the set-up codes, visit the sites.
http://remotesearch.blogspot.com/
http://electrohelponline.blogspot.com/
Universal remote controls are available at most of the electronic spare part selling shops. Visit some on-line sites too, which deals with electronic spare parts.

If you have a Hitachi remote HL02121, that means your TV model number is either 32PD7800 or 42PD7800.
According to the Owner's Manual the HDMI connector is activated by going to AV6.
While in the TV mode on the remote, press the '' button with the AV6 above it. That will tell the TV to use the HDMI input.
IF you don't have access to the TV remote, there are INPUT SELECTION buttons on the TV near the Lower Left hand Corner of the cabinet. Press the INPUT SELECTION button until AV6 is displayed on the screen (HDMI Input)

Try to buy an other remote control.
If you wish to buy its original remote control, contact the authorized service centre, or authorized dealer to your device brand. They can either give you a genuine remote control to your device, or can direct you, from where can you purchase a suitable one.
To select a proper universal remote control, you should know about the number of digits to its set-up codes. There are 3 digit, 4 digit, 5 digit, 2 digit and even single digit codes, to some brand devices. After confirming this, check the sites linked here. Both the sites have set-up code list and set-up procedure to many popular brand remote controls. Check which brand remote control has set-up code/s to your device brand, and buy that one according to availability? Brand name of the remote control isn't a matter, but it should have set-up codes in its code list, to the device brand you have.
Please note: Every new universal remote control will have set-up code list, and set-up procedure along with its pack. Never accept a remote control, that hasn't both of this. For more details about the set-up codes, visit the site http://electrohelponline.blogspot.com/ Check this site too. http://remotesearch.blogspot.com/ Universal remote controls are available at most of the electronic spare part selling shops.

Is it a universal remote control. If so, you have to set it up with your TV, using the set-up code to your TV. If it is the original type, have bought from the authorized service center, it should work with your TV. If not, it might be faulty.
If you wish to buy a genuine remote control, you have to contact the authorized service center. If you wish to buy a universal remote control, you should know about, which brand remote control have set-up codes to your TV brand, and buy that one according to availability. The first thing you have to do is, to confirm the number of digits in the setup codes to your TV brand. There are 4 digit, 5 digit, 3 digit and even 2 digit codes. You can make it sure by entering '0s' at the code enter window the TV dispays, and asks codes. Enter 'Zeros', and count how many zeros can be enterd. That number will be the number of digit of setup code, the TV/Device need. If you can enter 5 zeros, the number of digit in the set-up code to your TV is a '5' digit one, if only 2 zeros can be enterd, the number of digits in the set-up code to your TV should be a 2 digit one, and so on.. If you wish to get more details about this, try the sites linked here.
http://electrohelponline.blogspot.com/
http://electro-medical.blogspot.com/
Both the sites have setup code list, and setup procedure to many popular brand remote controls. Check the site in 'Mosaic' view. It will make search easy.

You can't select its game mode, with this remote control.
If you wish to buy a genuine remote control, you have to contact the authorized service center. If you wish to buy a universal remote control, you should know about, which brand remote control have set-up codes to your TV brand, and buy that one according to availability. The first thing you have to do is, to confirm the number of digits in the setup codes to your TV brand. There are 4 digit, 5 digit, 3 digit and even 2 digit codes. You can make it sure by entering '0s' at the code enter window the TV dispays, and asks codes. Enter 'Zeros', and count how many zeros can be enterd. That number will be the number of digit of setup code, the TV/Device need. If you can enter 5 zeros, the number of digit in the set-up code to your TV is a '5' digit one, if only 2 zeros can be enterd, the number of digits in the set-up code to your TV should be a 2 digit one, and so on.. If you wish to get more details about this, try the sites linked here.
http://electrohelponline.blogspot.com/
http://electro-medical.blogspot.com/
Both the sites have setup code list, and setup procedure to many popular brand remote controls. Check the site in 'Mosaic' view. It will make search easy.

Your remote control need cleaning. Visit this site for more details. Type in the site name Electro-help either to Google or Yahoo search box and click search. It is an electronic equipments service help site. All details you want are there. Note the position of hyphen in between words in site name, when you type it in. The site will appear as it is in web
Get more details from here. Pull up older posts.

Try these codes.
0088 0059 0142 0060 0072 0004 0009 0091 0001 0012 0061 0137 0139 0141 0179 0227

The remote will have a DASH or DOT key to let you enter the digital channel numbers directly,
as in: for digital channel 53.2, you'd enter "5" "3" DASH "2"

To program digital channels into a FAVORITEs list, you'd have to provide the Mfr/model
of the remote control itself...

Select the channel to tune & press "CH" this is the key to the right of zero on the CLE-942 remote, Now you can tune the selected channel. You also need this key to sort/move channels after running auto tune.

You can check on ebay for this. They have many different options. You can also get a universal remote for the TV. If you buy one that learns, you can use a remote from Best Buy or somewhere that has the remote you are looking for.

http://www.42televisions.net