Is there a good way to wire fans to turn on with tv?

[tom66]

Re: Is there a good way to wire fans to turn on with tv?

You can run a 12V fan on 15V. It will run faster. Most of them are rated something like 7~16VDC. You can also use a resistor in series to drop the operating voltage which will be far simpler than a linear regulator.

[davep911]

Re: Is there a good way to wire fans to turn on with tv?

After 2 weeks running 2 thermister fans at about 50% I have decided they are too loud. Fans unmounted are really quiet but when screwed to the large, thin back cover they create noise. With the fans the temp is about 110 deg F. Without them it is about 150 deg and with the back cover and fans off it is about 130 deg.

I don't have kids or any random people around this tv so is there any reason why I couldn't just keep the back cover off?

Is 150 deg F ok and I am worrying about nothing?

[tom66]

Re: Is there a good way to wire fans to turn on with tv?

Oddly, running with the cover off can be worse. With no ducting for the air, the TV may run hotter than before. I've noticed this on certain Panasonic plasmas.

[multimeter]

Re: Is there a good way to wire fans to turn on with tv?

Oddly, running with the cover off can be worse. With no ducting for the air, the TV may run hotter than before. I've noticed this on certain Panasonic plasmas.

yeah agreed, seen this issue also,when the tv back is removed, its exposed to ambient temps which are higher than a duct vented fan which obviously has forced cooling, = lower temps.

[tibimakai]

Re: Is there a good way to wire fans to turn on with tv?

You should use, those push in rubber feet for the fan.

[davep911]

Re: Is there a good way to wire fans to turn on with tv?

Oddly, running with the cover off can be worse. With no ducting for the air, the TV may run hotter than before. I've noticed this on certain Panasonic plasmas.

yeah agreed, seen this issue also,when the tv back is removed, its exposed to ambient temps which are higher than a duct vented fan which obviously has forced cooling, = lower temps.

Right, the tv almost seems to move as much air with the fans off as with them on. I think the reason it's cooler with the cover off is because the tv is near an A/C vent that is on most of the time.

You should use, those push in rubber feet for the fan.

Tried with and without rubber feet and the screws loose and tight but there is not much difference. I think 1 of the fans is a little unbalanced and it is being amplified at a large unsupported area of the back cover.