I'm building a bartop arcade and currently looking at 24 inch monitors. I was going to use a 24 inch tv that I have, but found that it will not power on unless the power button is pressed or the power button on the remote is pressed. This obviously won't work when the tv/monitor is buried in the cabinet. So how do I know that the monitor I purchase will automatically power on when power is supplied and a signal is received from the computer?
Unless you find someone who successfully used the same make/model TV in their build, you don't know for sure.
That said, here are several approaches that might prove useful:
1. Setup menu - Sometimes there's a setting for automatically powering on when power is restored. It might have an unusual name.
2. Hidden service menu - Often requires a unique series of button presses on the original TV remote to access it.
- How to access it usually won't be mentioned in the owner's manual, but the process can often be found online.
- Be cautious in this menu since it is intended for use by trained technicians only.
3. Use an Arduino and IR LED to send the same TV power button waveform sent by the TV remote.
- Build in a slight delay during the Arduino sketch initialization to ensure the TV is ready to receive the command.
4. Wire a momentary push button in parallel with the TV's power switch. Soldering skills required.
5. Use a capacitor to simulate a momentary button press when powering on. Soldering skills required.
Got Loewe TV to automatically turn on once power applied by putting a 100uF capacitor across a momentary switch built into the power button.
6. Combine #4 and #5. The capacitor turns on the monitor when power is applied, and you have a pushbutton to manually switch the monitor on/off as desired.
7. Use a timed relay in place of the pushbutton in #4 or the capacitor in #5.
Scott
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Topic: How do I know monitor will auto power on? (Read 776 times)
