Power Supply down, I need help desperately

tettydeedee · 2nd June 2005, 11:27 AM

I have an LSK. Magic DV II LCD panel and it works fine, but this morning the power supply unit failed and wonj't work anymore. I have looked at ebay but I can't find one to replace it, and if i can't find a new PSU I will have to buy another LCD panel even though mine works fine.
So if you know where I can get my hands on a replacement PSU for this LCD projector, please let me know.
Here are a few details about the PSU that I need. The lead that connects to the LCD panel has five pins in all a semi-circle/half moon,
on the back of the PSU it says " DC output:5V - 2 amps, 12V - 1.5 amps
Model PSM-3021

Also if you know of any other PSUs that work with my LCD panel that would be great.
Thanks, I desperately need help on this.

tettydeedee · 2nd June 2005, 12:14 PM

I have seen a power supply unit on the web called the P25A-T its an external PSU and has the same specs as the one I was using. Does anyone know where I can but one of these, as the site i was looking at doesn't have an online shop.
Thanks

aad1972 · 2nd June 2005, 12:44 PM

I hope this helps you out!Power Supply

tettydeedee · 2nd June 2005, 01:08 PM

Thanks m8, I've just ordered the PSU, you saved my life!!!

Mikey p · 2nd June 2005, 03:54 PM

Your original PSU put out 2 amps at 5 volts and 1.5 amps at 12 volts. The PSU you ordered only puts out 600ma(half an amp) at 5.1 volts and 1 amp at 12 volts. It won't last long before it burns out.

tettydeedee · 2nd June 2005, 04:19 PM

when you say it wont last long, can you be a bit more precise please, are we talking weeks, months - even less!!! Also do you know of any PSUs that would be more suitable, thanks

Megaman · 2nd June 2005, 06:31 PM

I'm not sure wether the lcd you have is a ohp-panel or pulled out of a monitor. If it is the later, the chance of it working is a little higher as the backlight would not be left and it consumes fairly much power. The current rating of that supply sounds like it is over rated for the lcd if you ask me, but maby if it is an old lcd or so it might draw that much.

I don't think that there is a big risk in burning the supply. If the lcd draws too much current the voltage will drop and the lcd will probably not work. If the lcd works, the current is enough and you most probably are inside of the spec. of the supply. Thus it should not break.
So, either it works and you are fine, or it won't work and you need another supply.

A power supply from a pc would give enough current if you are able to wire it up correctly to the lcd.

tettydeedee · 2nd June 2005, 06:37 PM

The LCD Im using is a panal not a TFT monitor, so does what you said still apply - that it will either work and be ok or it just won't work at all.
Thanks

Megaman · 2nd June 2005, 08:48 PM

Quote:

Originally posted by tettydeedee
The LCD Im using is a panal not a TFT monitor, so does what you said still apply - that it will either work and be ok or it just won't work at all.

Yes, it makes no difference on that.

Mikey p · 2nd June 2005, 10:32 PM

Quote:

Originally posted by Megaman
So, either it works and you are fine, or it won't work and you need another supply.

Or it will work for a week and burn out. Been there and done that. Twice.

2nd June 2005, 11:27 AM	#1
tettydeedee diyAudio Member Join Date: Mar 2005 Location: England	Power Supply down, I need help desperately I have an LSK. Magic DV II LCD panel and it works fine, but this morning the power supply unit failed and wonj't work anymore. I have looked at ebay but I can't find one to replace it, and if i can't find a new PSU I will have to buy another LCD panel even though mine works fine. So if you know where I can get my hands on a replacement PSU for this LCD projector, please let me know. Here are a few details about the PSU that I need. The lead that connects to the LCD panel has five pins in all a semi-circle/half moon, on the back of the PSU it says " DC output:5V - 2 amps, 12V - 1.5 amps Model PSM-3021 Also if you know of any other PSUs that work with my LCD panel that would be great. Thanks, I desperately need help on this. __________________ Ummm, Quite so

2nd June 2005, 12:14 PM	#2
tettydeedee diyAudio Member Join Date: Mar 2005 Location: England	I have seen a power supply unit on the web called the P25A-T its an external PSU and has the same specs as the one I was using. Does anyone know where I can but one of these, as the site i was looking at doesn't have an online shop. Thanks __________________ Ummm, Quite so

2nd June 2005, 01:08 PM	#4
tettydeedee diyAudio Member Join Date: Mar 2005 Location: England	Thanks m8, I've just ordered the PSU, you saved my life!!! __________________ Ummm, Quite so

2nd June 2005, 04:19 PM	#6
tettydeedee diyAudio Member Join Date: Mar 2005 Location: England	when you say it wont last long, can you be a bit more precise please, are we talking weeks, months - even less!!! Also do you know of any PSUs that would be more suitable, thanks __________________ Ummm, Quite so

2nd June 2005, 06:37 PM	#8
tettydeedee diyAudio Member Join Date: Mar 2005 Location: England	The LCD Im using is a panal not a TFT monitor, so does what you said still apply - that it will either work and be ok or it just won't work at all. Thanks __________________ Ummm, Quite so


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2nd June 2005, 03:54 PM	#5
Mikey p diyAudio Member Join Date: Feb 2004 Location: Sask. Canada	Your original PSU put out 2 amps at 5 volts and 1.5 amps at 12 volts. The PSU you ordered only puts out 600ma(half an amp) at 5.1 volts and 1 amp at 12 volts. It won't last long before it burns out.

2nd June 2005, 06:31 PM	#7
Megaman diyAudio Member Join Date: Jan 2005 Location: Linköping, Sweden	I'm not sure wether the lcd you have is a ohp-panel or pulled out of a monitor. If it is the later, the chance of it working is a little higher as the backlight would not be left and it consumes fairly much power. The current rating of that supply sounds like it is over rated for the lcd if you ask me, but maby if it is an old lcd or so it might draw that much. I don't think that there is a big risk in burning the supply. If the lcd draws too much current the voltage will drop and the lcd will probably not work. If the lcd works, the current is enough and you most probably are inside of the spec. of the supply. Thus it should not break. So, either it works and you are fine, or it won't work and you need another supply. A power supply from a pc would give enough current if you are able to wire it up correctly to the lcd.

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