LCD Boot sequences - Universal?

[eTanium]

Hi there.

I was hoping someone could shed some light onto this subject.

When an LCD TV boots up, what is the sequence of components that are booted up. The main board has constant power, so that the power button can be pressed (on remote or panel). From there, what does the main board tell the power board to send power to first? The inverters, the T-Con board, the tuner board?

[selldoor]

Re: LCD Boot sequences - Universal?

I dont know if there is a universal sequence here are 2 LG ones.

[cashkennedy]

Re: LCD Boot sequences - Universal?

There is no universal sequence,

the most common basic sequence is
1) power connected 5v standby always on
2) press power button and ac_on or similar stays around 3-5v
3) mainboard boots up very quickly on most models
4) turn on backlight with high current then reduce
4b) turn on tcon / lcd panel
5) 2-3 seconds of backlight being on > detect error with current draw on bulbs
6) full on

older toshiba models significantly differ from this.