How To How can we get rid of a blue box that reads time samp, sleep timer/on etc.?

Most cable box remotes are universal remotes and they generally don't have that function. You will need to use the remote for the TV to set the sleep timer.

When you press the Power/Sleep button the radio turns on and displays a number 90, or some other numbers. This is the play time that the radio will stay on then turns itself off. It could be that yours is configured with a sleep timer set to 01 minute, 10 or 15. You need to set the timer for a longer period. Thus we turn it on by pressing the Power/Sleep button, read the timer length then press again. Keep making short presses: The timer will cycle through all preset sleep timer durations. Select the length you want.

I'd wager that somewhere in the menu settings, there is a "Sleep Timer". Check the menu for the sleep timer, which turns off the TV after a set length of time. Also, check your remote, there might be a "Sleep" button that would do the same thing, press it multiple times until it reads "Sleep: Off" or something similar.

Access the system setup of your tv using the remote and switch off auto programming.

Just got one today, As I see it,the timer is not a sleep timer, it is for timed recordings.

When you press the Power/Sleep button the radio turns on and displays a number 90, or some other numbers. This is the play time that the radio will stay on then turns itself off. It could be that yours is configured with a sleep timer set to 01 minute, 10 or 15. You need to set the timer for a longer period. Thus we turn it on by pressing the Power/Sleep button, read the timer length then press again. Keep making short presses: The timer will cycle through all preset sleep timer durations. Select the length you want.

Press the [SLEEP TIMER] key and set the SLEEP TIMER for "0" MIN. While the
SLEEP TIMER information is still on screen, press the [DISPLAY] key and [VIDEO
STATUS] key of the remote control unit at the same time to enter the SERVICE
MENU.

Exit the service menu by twice pressing the [EXIT] key on the remote.

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I have the same problem. Does anyone have a fix?

i can't see the box, why not post photo, be like 2nd ever to do that here.
the menu button unlocks per the manual,
push said LCD menu button for 10seconds and it unlocks.
the lock is to keep kids from messing up your LCD controls
if you see sleep timing in the LCD turn that off, or pain happens.

the LCD OSD menu is called that OSD, on screen display.
lost the manuaL>?
is the unstated PC turned on, if not the LCD will complain.
NO signal, no sync, out of range, etc.

RTM?
its all there. free, posted here vast times.

https://www.manualslib.com/manual/71406/Hp-Pavilion-F1503.html

The user manual is available here:

Pioneer website - PDP5060HD

Setting of the sleep timer is on page 58, quote:

You can also use the menu to set the Sleep Timer.
1 Press HOME MENU.
2 Select “Sleep Timer”. ( / then ENTER)
3 Select the desired time. ( / then ENTER)
4 Press HOME MENU to exit the menu.