Question about Powmax LP-6100D (641272604024) 400-Watt Power Supply

1 Answer

Powmax 4oo, no video to monitor

I bought a new Powmax LP-9900D case, and installed a Soyo P4X400 mobo in it. I get no video to the monitor. I took the mobo out of a Dragon case, and all workde ok there. Any tips?
Thanks, bikerman1941

Posted by on

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that gotĀ 5 achievements.


    An expert that hasĀ over 500 points.


    An expert who has answered 200 questions.

  • Expert
  • 306 Answers
Re: Powmax 4oo, no video to monitor

A dead short is the cause. or a bad ground., which wilkl lead back to a short

Posted on Jan 03, 2008

Add Your Answer

0 characters

Uploading: 0%


Complete. Click "Add" to insert your video. Add


3 Points

Related Questions:

1 Answer

I need a repair manual for cooler master RS-550 PSU, high voltage came to our house and it got shorted

Never repaired one of these, just bought new ones if one got shorted or just happened to fail. I would reccomend putting any PC, laptop, etc on a surge protector though to prevent what seems to have occured to you on this particular unit. I lost one for the same reason and it took my mobo, hdd, and PSU at the same time. Needless to say I basically had to start over on my Asus custom build.

Sep 17, 2011 | Cooler Master (RS550PCARA3US) 550Watt...

1 Answer

My computer will not turn on

many, not all, psu's will internally tripo after this happens. how to reset:
1 if it has an on/off button turn off for 1 min and turn on.
2 if it has no button but has a 110/220 switch, unplug it then switch to 220 then back to 110 (also this may be 115/230 or even 120/240)
3 if it has neither of these, unplug it for 10 mins, then replug it and start up.
also when you opened the case did you smell anything funny? if so i would say that the mobo and/or cpu are done for. i doubt this tho because you had them on a surge, but it is possible.
1 more thing when you opened the case did you by chance knock a wire loose from the mobo?(motherboard)
after re reading your post i question whether the surge strip is good, because you said it was tripped and yet you had the posu light on. or did you mean a light inside the case of the computer itself?
if none of these suggestions help you please re post with answers to the questions i asked thanx and hope i have helped.

Jun 08, 2010 | Hi-Pro PSU HIPRO|HP-E3509 300W OEM...

1 Answer

Installed new Mother board and cannot get the power supply to turn on computer. How can I tell if the Power supply is bad or something else is wrong?

First off is the power supply powerful enough for this new mobo? is it new, old?. Is the motherboard securely earthed either in the case or on test bench?
If you have it in a case already strip out everything leaving just the motherboard and graphic card in. Power up now.
If this works put the memory back in.
Then hard drive etc until you have everything you need installed.
If it doesn't work you should try another graphic card if you have access to one. Also make sure the graphic card is seated properly.
If none of the above works then there is a good chance you have a faulty motherboard so best to replace it.

Oct 16, 2009 | Gateway System Power Supplies

1 Answer

Comp does not turn on. green light off but goes on when mobo disconnected

Test the power supply in another computer.
If that works, the next thing is to check the mother board. Remove all daughter boards from the slots. Remove all memory, disconnect all hard drives, cdroms, etc.
Make sure there is nothing plugged into the mother board except the video cable (if it is on-board video), if not, then make sure you have a good video card plugged in.
Again with no memory, no boards except a video card, if needed, and the power plugged into the board.
Turn on the power, and watch the screen. If it works, then you should get a notice that there is no memory, no hard drive, and so on.
If that is the case, then proceed to install one item at a time to isolate the problem. If it is not the case, the the mother board is probably bad. One other thing to check would be the CPU.
If you get no notice with the above, then the cpu could be bad. Check it in another computer, if possible. This should tell you what the problems are or is.
In the above cases, either the cpu or the mother board can be isolated to see what is bad, if any.

Oct 07, 2009 | HP System Power Supplies

2 Answers

W2888 emachine just shut down as if it were unpluged




May 12, 2009 | Bestec (ATX-250-12E) 250-Watt Power Supply

1 Answer

System is not workin properly

You might try this. Shut down the computer, disconnect power cords, disconnect everything at the back of the computer, mouse, key board, etc. Open the case, ground yourself by touching an unpainted area of the case and remove the power connectors to ALL optic drives and floppy drive if you have one. (Of course do not disconnect the hdd.)
Reconnect mouse, keyboard, etc., and power cords to wall outlet.
See if it will post now. If it does I say you have a faulty power supply.
I was given a computer which was doa. It would not post, after I tried the above routine it posted then booted to windows.
I replaced the psu and now the computer works fine.
Hope this helps!


Feb 02, 2009 | System Power Supplies

1 Answer


You'll need to check the PSU first, you might want to buy a PSU Tester for 24pin PSUs.

Then you might want to do a in depth examination of your motherbard circuit components by doing the following...

Look for burned/broken microresistors. You might need a magnifying glass and good lighting. Any resistor showing a little blob or browning is burned. Microresistors are those minuscule black,gray,brown or white rectangles lying all over the motherboard's traces. Check first the ones near the power supply connector and near the chips, specially one that says winbond on it, this last ones may get burned from USB overloading, from using non-self powered hubs also called passive hubs.

You may check for blown capacitors, capacitors are those standing cylinders with a plastic cover around them with numbers and letters printed in those covers. On top they are left without a cover and they are aluminum color, they may be flat or have one or more grooves runing across the top. A blown capacitor, looks different from the others because it looks a little bloated on the top, or may have spilled some sort of transparent varnish from its bottom to the motherboard or its top to other components around.

Finally you may suspect of the CPU, athlons get very warm and they can get burned too. Never start your pc without a cpu.

Jan 03, 2009 | Sunbeamtech SUNNU550-US-SV Nuuo 550 Watt...

1 Answer

Problems with P35neo2

Check your M/board manual for setup if it should have an 8 pin power connector you will need a power supply to suit it if you continue trying without it you could also be up for a new motherboard and CPU

Aug 05, 2008 | Super Flower Computer Super Flower Cable...

1 Answer


Some power supplies have a microswitch that prevents a turn on while the case is open. Sometimes it's a switch on the case, or a switch linked to the mobo. You can try to defeat that. Also PSU's are made so they won't turn on unless hooked to a mobo. You will have to jump some pins to defeat that. This info is readily found in Google.

Jan 02, 2008 | System Power Supplies

1 Answer


Not sure of a toll free number... but their RMA page on their site has this info -

Inquiry -

Phone 626-839-5955  x143
Fax 626-839-5966

Come from this page here -

Oct 29, 2007 | System Power Supplies

Not finding what you are looking for?
Powmax LP-6100D (641272604024) 400-Watt Power Supply Logo

Related Topics:

75 people viewed this question

Ask a Question

Usually answered in minutes!

Top Powmax System Power Supplies Experts

Brian Sullivan
Brian Sullivan

Level 3 Expert

27725 Answers


Level 3 Expert

5660 Answers


Level 3 Expert

18259 Answers

Are you a Powmax System Power Supply Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides