How do I retune my Toshiba 32bv500b?the screen is just blue and there is no set up in the menu and no signal

there may be screen error or check the task vbar error.

Hello

Before switching on the television put your decoder and media recorder to Standby if they are connected
and ensure the aerial is connected to your television
Select APS from Menu.
When the APS feature is selected all channels and

settings will be lost, the television will return to factory
settings and then re-tune.

* Press MENU and using the Left or Right button
select Program Table tab

** The Program screen will appear on the screen.
Press the BLUE button to start APS
*** Press the Left or Right button to set the country

**** Press the BLUE button to cancel APS or the RED
or OK button to start.

You must allow the television to complete the
search
OK.

Hopefully, if you were to press the menu button and somewhere on the screen will be DTV. Select DTV and then you can run search again.
Hope that makes sense.

On initial installation,the language menu disappears after a split second and the standby light disappears so I can't set the TV up at all

Are you using the freeview tuner, I only ask as it looks like your having a similar problem that I had a few months back. I moved into a new house and plugged in the tv. Using the freeview tuner I wasnt able to get any channels. It turned out although the aerial picked up regular analogue tv it wasnt the correct aerial for freeview.

Try resetting the TV:

1. Switch on TV and switch to any analogue channel.
2. On the TV: Press and hold the MENU button.
3. Menu screen will appear on the display.
4. Do not release the MENU until the menu screen disappears.
5. TV will go blank for about 60 seconds and then display initial set up screen.
6. Follow the on-screen prompts to re-tune the TV.

If this does not work then the problem is likely to be a loose ribbon cable or main small signals board inside the TV.

click menu, on station prog go to EDIT. Press blue button twice, then go to rescan prog. (it seems to clear all previous scanned programs and starts again.

blue screen is due to problem in blue video circuit. please check 1 supply to blue video ckt. 2 crt base loose. 3 components in blue video ckt. 4 loose contact in blue cathode ckt in crt base. 5 blue video transistor. 6 signal coming to blue video from signal processor. 7 signal processor ic. good luck.