Question about M-Audio StudioPro 4 Main / Stereo Speaker

1 Answer

No Power I've had these monitors for a few years. All of a sudden, they will not power up. I've switched power supplies, surge protectors and tried running them direct into a wall source. No dice. I've got no noise, hum or other indication that they are receiving power. LED does not light up... Should I junk these or try and get them fixed?

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  • drumrabbi Jan 13, 2008

    as far as I could tell, there is no fuse. M-audio offered to send me an RA (return authorization ) . I am afraid that if I do send them back, the cost of shipping and the repair would cost as much as a new set...Any advice?

  • drumrabbi Jan 28, 2008

    I finally took these apart and found a BUILT IN THERMAL FUSE.

    It was labeled : 048-0MD4X-001
    BUILT IN THERMAL FUSE
    115-0-115-0-TH

    Any suggestions?

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  • 93 Answers

Is there fuse on these monitors?

Posted on Oct 08, 2007

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Gateway ZX4300 - power adapter problem


Verify all specifications of your previous charger and new chargers/adaptors.

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My JVC flat screen won't turn on, tried unplugging and resetting. Stand-by light is still on. And it's attached to a surge protector than to the wall. I've only had this for 1 year.


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Dec 09, 2012 | JVC LT-42X579 42 in. LCD TV

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My MFC-J435W DOES NO TURN ON--TOTALLY DEAD


Power cord is bad, or Power On switch is bad, or Power Supply is bad.
Or the receptacle you have it plugged into is bad.

I have had a few surge protectors, where just ONE of the receptacles was bad.
(Hmmm, surge protector Power On LED is lit; monitor has power, printer has power, and amp for speakers has power. But no power to computer)

Last thing; is the printer closed? When opening to replace ink cartridges; is it closed now? Open it, and close it.

Regards,
joecoolvette

Nov 26, 2012 | Computers & Internet

2 Answers

Had power surge. Tv was on surge protector. Now no power will come on and just makes a buzzing sound.


Have you tried plugging it in without the surge protector? I would wager that either a) the surge protector needs to be reset/turned on and off depending on the model or b) either your TV and/or surge protector have been damaged by the power surge.

Try plugging the TV straight into the outlet and see if that helps.

Oct 25, 2012 | Televison & Video

1 Answer

Montor is not responding to computer. Can the video card be replaced?


Whoa! Wait a minute here.

Let's not get hasty, and blame the graphics card.

Think of all the years of service..........

the long cold nights..........

graphics beyond compare, and......................

"Will Donna ever find true love?"



What? !O_O!

Oh yeah, where was I.........

You know the monitor cable, and monitor are good, because you are seeing No Signal, or going into Sleep Mode.
The next logical thing IS to suspect the graphics card.

The actual first thing to check is the Power.

A) Surge Protector:
Check to see that THE receptacle in the surge protector, that the computer is plugged into, (Or was), is good.
I have had a FEW surge protectors where just THAT receptacle, was bad.

"Hmmmm,....LED power light is on for the surge protector. Monitor, printer, and router all have power from the surge protector."
Tested the receptacle that the computer was plugged into, with a table lamp, and NO power.

2) Power Supply:
If you see LED lights on, and maybe fans spinning, it doesn't mean the computer is getting enough power.

A) If ALL of the LED lights were on at once, they would use less than 1 Watt of power.

B) EACH fan uses 2 to 3 Watts of power.

C) A typical Processor can use 51 to 125 Watts of power. Just depends on what Processor it is.

A power supply with a weak voltage power rail, will not have enough power to turn the Processor on.
No Processor, no computer. No computer, no video signal to the monitor.

Test the 3 main voltages for the power supply with a multimeter, or use a KNOWN to be good, and compatible, power supply for a test unit.

[ 3.3 Volt power rail
5 Volt power rail
12 Volt power rail.
All are DC voltage ]

Power supply checks out? Then you may, or may not, want to obtain a graphics card, and try it.
Why -> may not?

Because the electrical damage may go further, than the graphics card.
May have fried the motherboard.
Hopefully not the Processor, and Ram Memory, but...........?

[ The motherboard has Integrated Graphics. If you are plugging into the VGA port on the back of the computer, you are using Integrated Graphics.

If the Surge Protector, and Power Supply checks out, AND you have access to an economical graphics card, (Or can borrow one), try it.
Make sure the computer is unplugged from power. FOLLOW Anti-Static Precautions. Physically install the graphics card.
Monitor cable to graphics card.

When you first turn the computer on the graphics will be rough.
You still have to install the drivers]

[An economical multimeter can be purchased for as little as $8 to $12. Available in a multitude of stores. An auto parts store is but one example.
Need guidance in using it post back in a Comment. Include the manufacturer name and product number of the multimeter ]

For additional questions post back in a Comment.
Regards,
joecoolvette

Jul 09, 2012 | Computers & Internet

1 Answer

My Gateway Essential 450 won't turn back on from the front power switch. Where can I buy a new switch or is the problem something else?


This is where you can buy a new ATX power on switch,

http://www.axiontech.com/prdt.php?item=78201

The Power On switch is located inside the plastic Power On button assembly.

Age plus the heat developed inside the computer, have made the plastic of the Power On button assembly, brittle.

I suggest removing the Power On button assembly from the Front Panel.

(And disconnect the Power On switch cable from the motherboard.
BEFORE you do I suggest you make a drawing, and possibly some notes, as to where that cable's wires plug into the motherboard)

Computer unplugged from power, follow Anti-Static Precautions.

I would suggest using a hairdryer set to low heat, and moving the nozzle slowly back, and forth at the plastic until it slightly softens.
(Or you can use a bowl of VERY warm water. The switch is no good now anyway)

Is the problem something else?
It's either a bad Power On switch, or a bad Power Supply.

(Provided you are sure the surge protector is getting power, AND you have ensured that THE receptacle in the surge protector that the computer is plugged into, has power.

I have had a few surge protectors where just THAT receptacle was bad. Surge protector power LED light was on. Monitor, printer, and router had power. Just ONE receptacle was bad)

There is a simple test to perform to see which component is bad Power On switch, or Power Supply.
IF you do not know how, and wish to, please state in a Comment.

Regards,
joecoolvette

Jun 15, 2011 | Gateway Essential 450cs Deluxe (ESSENTIAL...

1 Answer

The tower nor keyboard wont come on and its pluged in


Advise, c

1) Check to make sure THE receptacle in the surge protector that the computer is plugged into, is good.
I have had a few surge protectors where just THAT receptacle was bad.

("Hmmm, monitor, router, and printer has power from the surge protector." Checked the receptacle in the surge protector that the computer was plugged into, with a table lamp, found THAT receptacle was bad)

2) Receptacle in surge protector proves to be good?
Suggest performing the test to see if the problem is the Power On switch, or the Power Supply.
(The Power On switch is located inside the plastic Power On button)

The test involves bypassing the Power On switch, by using a jumper wire on the Soft Power On, in the ATX main power cable's connector.
Has nothing to physically do with the switch itself.

Using the jumper wire the computer (Power Supply) comes on?
Problem is the Power On switch.

[ Example of a generic ATX power on switch that I have found fits many computers,

http://www.directron.com/atxswitch.html ]

Using the jumper wire the computer (Power Supply actually), does Not come on?
The problem is the Power Supply.
Replace.

http://www.playtool.com/pages/psuconnectors/connectors.html#atxmain20

(Green wire {PS_ON} is the Soft Power On wire. It is jumped to ANY Ground {Black} wire)

Want to know how to Properly perform the above test? Please post back in a Comment.
Also post the computer manufacturer's name, and the Model Number.
(On the back of a desktop computer next to the Windows Product Key, or up on the side of the tower)

Regards,
joecoolvette.

Nov 08, 2010 | Computers & Internet

1 Answer

My desktop computer wont power on


Suggest you see if the problem is the Power On switch, or the Power Supply.

(First check to see if the receptacle in the surge protector, that the computer is plugged into, has power.
Have had a few bad surge protectors, where just THAT receptacle was bad.

"Hmmm, surge protector power on LED light is lit. Monitor, printer, and router have power, that are plugged into the surge protector.

Plugged a lamp into THAT receptacle, and found it to be bad)

To test whether the Power On switch, or the Power Supply is bad, a jumper wire is used to bypass the Power On switch.

[ The Power On switch is located inside the plastic Power On button.
This is an example of a generic ATX Power On switch, that I have found fits many computers,

http://www.directron.com/atxswitch.html ]

The jumper wire is used on the 20, or 24-pin ATX main power cable's connector.
While still plugged into the motherboard.

The jumper wire connects to the Soft Power On wire, (Green), and to any Ground wire. (Black)

Example of a 20-pin ATX main power cable, and it's respective connector,

http://www.playtool.com/pages/psuconnectors/connectors.html#atxmain20

Example of a 24-pin ATX main power cable, and it's respective connector,

http://www.playtool.com/pages/psuconnectors/connectors.html#atxmain24

Using the jumper (Wire) to bypass the Power On switch, turns the Power Supply on?
The problem is a bad Power On switch.

Using the jumper to bypass the Power On switch, does Not turn the Power Supply on?
The problem is a bad Power Supply.

There is a correct procedure for performing this test.
Post back in a Comment if you wish to know.

Regards,
joecoolvette

Sep 20, 2010 | Computers & Internet

1 Answer

No power cannot turn on


Suggest you check the simple stuff first.

Not checking is akin to a car that won't start, and tearing apart the entire fuel system, only to find it was just out of gas.

1) Make sure the receptacle the surge protector is plugged into, has power. Surge protector Power On light should be lit.

2) Check THE receptacle in the surge protector, that the computer itself, is plugged into.
Have had a number of expense surge protectors, where just THAT receptacle was bad.

("Hmmm, surge protector Power On LED light is lit. Monitor, printer, sound system, and router plugged into the surge protector has power. Should be good to go.

NOT!
Plug a table lamp, or similar device into THAT receptacle.
Make SURE it has power)

Surge protector, and receptacle in surge protector checks out?
Bypass the Power On switch.

See if the problem is a $5 Power On switch, or the Power Supply.

(Generic ATX Power On switch that I have found fits many computers,

http://www.directron.com/atxswitch.html

{The Power On switch, is located inside the plastic Power On button assembly}

This is information about computer Power Supply's,

http://en.wikipedia.org/wiki/Computer_power_supply

This is a basic example of an SMPS, (Photo at upper right. You can click on the photo to enlarge), and info about.
(Switched-Mode Power Supply. The main type of power supply used in personal computers),

http://en.wikipedia.org/wiki/Switched-mode_power_supply

By bypassing the Power On switch, you will be able to determine if the problem is the switch, or Power Supply.

Bypassing the Power On switch turns the Power Supply on?
Bad Power On switch.

Bypassing the Power On switch does Not turn the Power Supply on?
Bad Power Supply.

A jumper wire is used on the 20, or 24-pin ATX main power cable.
The jumper wire goes to the Soft Power On, (PS_ON. Green in color), to ANY Ground wire.
(ALL Black wires are Ground wires)
A MOMENTARY contact is used.

(Example of a 24-pin ATX main power cable, and it's respective connector,

http://www.playtool.com/pages/psuconnectors/connectors.html#atxmain24 )

In order to guide you in this procedure, I need to know the computer manufacturer name, and Model Number.

On a desktop computer this will be located on the Back of the computer tower, (Next to the Windows product key), or up on the side of the tower.
Some models have it where there is a door you open in the front, and the product number, or model number is located there.

Post back in a Comment.

Aug 07, 2010 | HP Computers & Internet

1 Answer

My desktop dont come on


1) Check THE receptacle in the surge protector the computer is plugged into.

I have found more than once that One bad receptacle in the surge protector is bad.

"Hmmm, surge protector power on light is lit." "Monitor has power, amp for the speakers has power, and the router has power."
All plugged in to the same surge protector.

Tried a table lamp into the receptacle the computer was plugged into, Nothing.
Replace surge protector.

2) Bypass the Soft Power On of the Power Supply, and see if the problem is the Power On switch, or the Power Supply.

If you bypass the Soft Power On of the Power Supply, and the Power Supply comes on, the problem is a bad Power On switch.

If you bypass the Soft Power On of the Power Supply, and the Power Supply does Not come on, the problem is the Power Supply.

If you wish to know how to perform this simple test, just state so in a Comment.
(Believe upper right of your page)

Jun 17, 2010 | E-Machines eMachines Desktop PC

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