Run monitor from atx power supply

[ITSYSTEMSALBANIA]

Hi

I will get a asus 19 inch monitor without psu and i want to run it from an atx psu i have a Linkworld LPE2 400w power supply i want to insert the atx psu inside monitor to look nice but can the psu run without fan.Is it going to work ?

[shovenose]

Re: Run monitor from atx power supply

Hi

I will get a asus 19 inch monitor without psu and i want to run it from an atx psu i have a Linkworld LPE2 400w power supply i want to insert the atx psu inside monitor to look nice but can the psu run without fan.Is it going to work ?

That is a really junky/cheap power supply. Linkworld power supplies are awful. It will NOT survive without a fan, even under light load.

If you're missing the power supply for the monitor, why not order one for cheap on eBay or something?

[ITSYSTEMSALBANIA]

Re: Run monitor from atx power supply

That is a really junky/cheap power supply. Linkworld power supplies are awful. It will NOT survive without a fan, even under light load.

If you're missing the power supply for the monitor, why not order one for cheap on eBay or something?

Hi

Thank you for your reply i cant find the psu in ebay but i found it on aliexpress but it costs 30-40$ with this price i can purchase another monitor i have other atx psu but i think they will not fit inside monitor.

[budm]

Re: Run monitor from atx power supply

You need to find out what the Voltage and the current requirement for the backlights circuit will be first.

[ITSYSTEMSALBANIA]

Re: Run monitor from atx power supply

You need to find out what the Voltage and the current requirement for the backlights circuit will be first.

For the backlight i will use a universal inverter.

[budm]

Re: Run monitor from atx power supply

As long as you have the correct Voltage and Current required by the monitor then it should work if the load (Monitor) for your PC power supply meets the minimum load requirement to make it stable.

[stj]

Re: Run monitor from atx power supply

asus use internal supply's - why is it missing?

[ITSYSTEMSALBANIA]

Re: Run monitor from atx power supply

asus use internal supply's - why is it missing?

The monitor has suffered a lightning strike and the person who owns the monitor has opened the monitor to repair and now he cant find where he has left the psu.

[mariushm]

Re: Run monitor from atx power supply

I would say, don't use a power supply because it won't fit in the back, it has big heatsinks, it's hard to insulate from the rest of the monitor (too risky with mains voltages)

I would recommend finding a laptop adapter (12-18v any current) or a good 12v wallwart (universal adapter, the kind that goes in the mains socket) rated for at least 2A and buy from ebay a small dc-dc converter to get the 5v or 3.3v you need for the other small board inside the monitor.

This way, anything that's high voltage is inside the factory built power supply and you only play with low voltage.

[shovenose]

Re: Run monitor from atx power supply

Seems like a waste of time haha just buy replacement monitor if it's only $30-40 to replace it.

[ITSYSTEMSALBANIA]

Re: Run monitor from atx power supply

I would say, don't use a power supply because it won't fit in the back, it has big heatsinks, it's hard to insulate from the rest of the monitor (too risky with mains voltages)

I would recommend finding a laptop adapter (12-18v any current) or a good 12v wallwart (universal adapter, the kind that goes in the mains socket) rated for at least 2A and buy from ebay a small dc-dc converter to get the 5v or 3.3v you need for the other small board inside the monitor.

This way, anything that's high voltage is inside the factory built power supply and you only play with low voltage.

.Thank you for this idea maybe i will do this.

[stj]

Re: Run monitor from atx power supply

try to find a schematic of the monitor so you know if the invertor is on the psu and what the voltages are.

decide after that.

[momaka]

Re: Run monitor from atx power supply

I will get a asus 19 inch monitor without psu and i want to run it from an atx psu i have a Linkworld LPE2 400w power supply i want to insert the atx psu inside monitor to look nice but can the psu run without fan.Is it going to work ?

It might work.

But before spending any more time with it, first just hook up the PSU temporarily to the monitor to see if it works at all. Hopefully the lightning strike didn't destroy the logic board - in which case if it did, it wouldn't be worth repairing this monitor (not unless you find another monitor that has a compatible logic and PSU boards)

As far as the PSU working without a fan if the monitor turns out to work: I would say that it would, but it may run very hot. Most likely the capacitors will cook very quickly (a few months to a year maybe). Also, mariushm brings a valid point: Why try to fit an ATX PSU inside a monitor and risk shorting something out (due to tall heatsinks in ATX power supply) when you can get a universal 5V/12V PSU on eBay for less than $10 shipped.

But overall, I will say this: the monitor isn't anything special, so try out the ATX idea if you want. And if it doesn't work... well you didn't loose much of anything other than some time. Just play it safe and make sure you don't set your house/shop on fire in the process. Then you could lose a lot.

That Linkworld PSU isn't the best, but it will handle the power draw from the monitor just fine - at least with a fan running. You can also try and disable the fan, then try to run the monitor off of the PSU to see how hot it gets. If it goes above 80C inside, then you probably shouldn't use the PSU without the fan. But below that, it isn't too bad. 60C may seem awfully hot, but many LCD monitors seem to run 60-70C inside on average. I've checked only a few, and they ran around 65C right at the vent. So it is possible they could be running hotter.

[budm]

Re: Run monitor from atx power supply

The monitor will probably draw about 50~60W of power so it will not get that hot, each lamp uses about 8~10W of power so if it has 4 lamps, it will be about 40W for the lamps +conversion lost.