Build Your Own Arcade Controls Forum
Main => Monitor/Video Forum => Topic started by: BORIStheBLADE on July 10, 2007, 10:31:08 pm
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So I have a empty cabinet with a bad monitor and I decided on using a 20" tv that has been collecting dust for 3 years. I took the tube out of the case and mounted it in my cabinet which took a little fab work , but looks good.
My question is, since these tv's need a button pushed to be turned on what are you guys doing so you don't have to do it that way?
Thanks
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If you cant wire it so that is 'always on' and powers up when the cab is powered up you will need to move the switch i.e. connect wires to the on button's switch and place the button elsewhere on your cab so that it is accessible.
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I can get to the button on the circuit board that turns it on and put a jumper in, but I was wonder if thats the best way of doing it.
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In addition to that dilemma, you also have to hope that your TV remembers the last input when it's powered down. Very few do both.
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Good point, I'll check to see if it does. If it doesn't maybe I'll check to see if there is a default input that it goes to after a loss of power. Hopefully not the cable.
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I can get to the button on the circuit board that turns it on and put a jumper in, but I was wonder if thats the best way of doing it.
You can test this by turning the tv on and while holding the button down and having someone unplug the the tv and then plug it back in.
If it doesn't come back on while holding the button down then jumpering the circuit would do you no good.
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He could keep power to the TV but use a relay to press the momentary power button when the rest of the cab comes on, yes?
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If you could figure that out, you'd be a hero to many people around here with TVs for MAME displays.
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Ok, so I did a couple of tests. I had a DVD player on the whole time for this. TV is on then I unplugging the tv it actually turned back on and stayed at the video input I was using for the dvd player when I plug it back in. Now going to the video I was using could be just luck that I have it on the default it goes to , but the fact that it turned back on was great. I did this test a couple of times to make sure it still would do it and it did.
So With that being said I can use it like this, unless it won't turn on like this after the cap has been drained.
Do you guys think thats possible?
The second test I unplugged the tv while it was on and I held the power button down before I plugged it back in to see if it would turn on. I didn't, it would turn on the minute I release the power button though.
Thanks
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after the cap has been drained.
That reminded me of something......
Wasn't there a trick to using a capacitor as a jumper on the switch for this type of powering on dilema ?
(racking my brain now to find it)
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i have 2 TVs i use for Mame... one actually has a setting on the menu for "power on after outage"
the other is like yours and will just remember what state it was in before power down. it comes back on no matter how long i leave it unplugged (3 weeks was the longest i tried) or the power bar turned off.
so i would say yes, it will be a successful MAME monitor.... just combine that with a "smart strip" and a single button, the computer power button, and everything should fire up. or if you are electronically savvy maybe something like this:
http://www.nicemite.com/PowermiteDD/PowermiteDD.htm
good luck
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Thanks for the info guys. I'm going to try my usb controlled strip first then go from there.
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hi boris another way you can do it so it comes on ,on power up is to set logic on micro to H or L you need to identify your micro type ,if you tell me your micro i can tell you which pin if i can get data sheet of web, also if you have a scart socket, on pin 8 is source switching setting again dc volts or logic will set your equipment to that input every time . kind regards dave UK
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hi boris another way you can do it so it comes on ,on power up is to set logic on micro to H or L you need to identify your micro type ,if you tell me your micro i can tell you which pin if i can get data sheet of web, also if you have a scart socket, on pin 8 is source switching setting again dc volts or logic will set your equipment to that input every time . kind regards dave UK
Sprry Dave, but you totally lost me there.
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hi boris just seen your reply, sorry what i mean is when you push on/off/standby button, your signal comes from and goes to the microprocessor ,so the micro then sends out a signal called a logic signal this then can switch power on, all you are doing when you set logic on micro is overriding your on/off/sby switch. if you need more information please let me know. not on line all the time but try to get on each day. kind regards dave UK
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hi boris just seen your reply, sorry what i mean is when you push on/off/standby button, your signal comes from and goes to the microprocessor ,so the micro then sends out a signal called a logic signal this then can switch power on, all you are doing when you set logic on micro is overriding your on/off/sby switch. if you need more information please let me know. not on line all the time but try to get on each day. kind regards dave UK
That makes more sense to me. Thanks.
So, Is this in the menu to the TV?