When i turn my toshiba regza on I cannot access DTV all I get is a black screen. when i press the menu setup button this comes on for about a second then goes off again to a black screen. I can still use the AV channels

Question edited for clarity.

This is generic help because you don't state the model. You have to do Link Setup first, then the options should become active.

Regza-Link Setup; Hdmi Settings - Toshiba Regza 32CV510U ...

https://www.manualslib.com > ... > Owner's manual
Using The Hdmi Settings Feature; Regza-Link Setup; Hdmi Settings - Toshiba Regza 32CV510U Owner's Manual ... and press T. ... Press B or b to highlight Enable REGZA ...

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How do you unlock HDMI on a Toshiba TV?

You may be able to turn the Panel Lock feature off by pressing the "Volume Down" button on the front of your TV for more than 10 seconds. Save your PIN code in a secure location where it is accessible only to you or other authorized persons.

How to Unlock Panel Lock on a Toshiba TV ' Techwalla

Dear beanbean,
This "lovely black screen" is a BIOS password screen. This shows up because somebody has set a boot-up password in the BIOS Setup. If you're lucky, the BIOS Setup is still unprotected, and you can access it as follows:
When you turn it on, look for something that says "Press [button] to enter Setup" or "Press [button] to enter Setup Utilities." Press the corresponding button on your keyboard, and you should enter BIOS Setup.

Now two things can happen. Either you are permitted to access Setup, or you are prompted for the password.
If you can access Setup, navigate to the Security tab and clear all set passwords.If not... then you can either reset BIOS by unplugging the computer, taking off the back, and removing the CMOS Battery (unrecommended), or you can call Toshiba support and ask for the master password (Most manufacturers have a master password, which will allow you to access Setup and remove the boot-up password)
Hope this helps,Ericthecmh

Hello
To unlock the panel lock of Toshiba TV, follow this.

Press the "Menu" button on the remote control, and scroll until you come to the "Preferences" menu. Select "Parental Control and Locks," then press "OK." If your TV does not have a "Preferences" menu, go directly to the "Locks" menu.

Enter the four-digit PIN that you selected when you turned the Panel Lock feature on. You may have to scroll up or down to access this area

Press the "Up" or "Down" buttons on the remote until you reach the Panel Lock feature. Move the cursor to select "Off," and press "OK."

Unplug the TV for some time (usually 1hr is plenty) and it should reset to factory settings.

Hi, sounds like you are in Analouge mode and not in DTV mode so you can't access the DTV menu to tune in the tv.

Press the 'SOURCE' button and move to DTV using the arrow keys, then press ok and if channels aren't already tuned you will now be able to tune them by accessing the DTV menu by pressing the 'MENU' key on the remote control.

If you don't have the manual you can download it or view it by clicking ----> HERE
Hope this helps.

Sorry but the model number is not coming up in my list, which is it 32 or 37 in?

Reset is removing power cord from the wall plug. Without electricity for five minutes will reset the semicinductor memory and reload with the correct firmware when you turn on again. This is due to glitches on the power line, some people may use powerline filters to avoid any future problems..

On your remote you should find a "Format", "Picture Size", or similar button. This should "scroll" through the choices as you press it.

If there is not a button on the remote, access the user menu and look in "setup" and find "Picture size" or "Format" or the like and change it there.

Hope this helps!

Reset the TV to the factory default settings then reconnect the DTV, select correct input then perform auto scan.

Do not use the chat online service, it's not so helpful, the'll just tell you that your machine has a bad component and thats what electronic components do. Then they will just tell you to get a technician to fix the problem... What a waste of money...