Question about Acer Aspire M3641 Dual Core E2200 PC Desktop

1 Answer

No signal to monitor from my pc

Tower powers on but that's about it i have no output from anything no signal to the monitor no usb work. fans spin and hard drive sounds like its working. and there is no beeps tried removing the ram and resetting the bios but still the same any help would be really appreciated

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  • Acer Master
  • 3,400 Answers

TRY WITH A OTHER PSU.CAN BE THE PROBLEM.

Posted on Jul 25, 2013

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4 Suggested Answers

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Posted on Jan 02, 2017

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Fredinot
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SOURCE: Desktop will not boot into bios No Usb power;monitor ''No Signal''

Your problem is the memory . YOu have to put off the pc and remove the memory card in the slot. Then clean the silver pins in your memory with a rubber eraser. Put it back and see if the BIOS will be prompted on the screen , if not you have to replace the memory.

Posted on Feb 12, 2010

  • 388 Answers

SOURCE: No signal to monitor and will not respond to manual shutdown.

sounds like the wire to the power button is disconnected also remove the battery unplug form the mains leave for an hour restart the machine without the battery to reset the CMOS

Posted on Feb 11, 2012

joecoolvette
  • 5660 Answers

SOURCE: My Computer powers up but no beeps and "no signal" displayed on monitor. All the fans are working and the tower is relatively clean inside and free from dust, obviously a component has failed to start

Would appear to be a bad Power Supply.

Do you have a multimeter, to test the 3 low DC Voltages coming out of the Power Supply?

A) 3.3 Volts
B) 5 Volts
C) 12 Volts
Again, all are DC Voltage.

In comparison two D cell flashlight batteries produce 3 Volts DC.

(The dangerous AC electricity is contained within, the metal case of the Power Supply)

I have seen economical multimeter's on checkout aisle racks, at major discount stores.

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

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

[Don't cut on any insulation of wires. There is a better method, and it does not involve that ]


If this is not feasible for you, how about borrowing (Temporarily), a KNOWN to be good, Compatible power supply; from a working computer?

Either way we are trying to see if the Power Supply is the problem, before you spend your hard earned money.

There is also a visual test you can perform, to see if other components have failed. Electronic components on the motherboard;

Electrolytic Capacitors.
More specifically, they are Radial Aluminum Electrolytic Capacitors,

http://www.ebay.co.uk/itm/Foxconn-RS780M03A1-8EKRS2HM-AM2-for-Aspire-M3201-/130620116535

Posted for visual identification, of Electrolytic Capacitors on motherboard, not advertising for seller; nor website.

Scroll the page down to the large photo.

http://capacitorlab.com/visible-failures/index.htm

http://www.youtube.com/watch?v=Lut7MX5Dd_A

What do they do?
Some of them are used as Filters.
Some of them are in the Motherboard Voltage Regulator Circuit.

Part of what the motherboard voltage regulator circuit does, is to regulate voltage for the Processor (CPU)

The Processor MUST have a steady. 'clean', supply of voltage; and it MUST be kept within the tight voltage range, for the Processor.

Too little, or too much, and the Processor turns off.
(BIOS turns it off)

http://www.hardwaresecrets.com/article/616

If you find faulty Electrolytic Capacitors, can they be replaced?
Yes.
Do I know this will fix the motherboard, or are they just the start?
No.

All I can tell you is this;

I have replaced faulty ones for years, now. The rate of repair fixing the problem is pretty high.

What people do not know, is that we, the worlds electronic consumers; have been plagued with a problem of faulty Electrolytic Capacitors, for years.

Y-E-A-R-S

Started in the early 70's to my knowledge, and continues to plague us today.
Not talking just computers; speaking of all electronic devices that use Electrolytic Capacitors.

(For one; have you ever had an AT&T router go out?)

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

Will wait for your reply.

Can I help you in replacing bad 'caps'?
Sure.
Do you have basic soldering skills?

Please post back in a Comment.
Regards,
joecoolvette

http://www.hardwaresecrets.com/article/595

http://www.youtube.com/watch?v=YCSNWi3UHf4

Posted on Mar 29, 2013

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1 Answer

Gateway a computer desktop has power but nothing on screen the computer doesn't have a tower


1) Computer doesn't have a tower? Means it is a 'pancake style' of desktop computer. A flat model.

2) No signal on monitor screen?
Good.
At least we know the monitor is good.

Problem is monitor cable, IF separate cable; or computer.

Computer isn't sending a video signal.
No Signal, Power Saver Mode, etc.

If an older CRT type monitor, (Looks like a small TV), and monitor cable is not detachable; use a known to be working monitor, and monitor cable.

If a separate monitor cable, use a monitor cable from a working computer, for a temporary test unit.
Put it back when deemed monitor cable is the problem.

Logic at this point, would deem something is wrong with the graphics chipset.
Whether mounted directly to motherboard, (Integrated), or a separate graphics adapter card. (Graphics/Video Card)

However, computer could be dirty inside, or have a bad Power Supply.

LED's (lights) light up? Maybe fans spin?
Means nothing.

1) If ALL of the Light Emitting Diodes were on at once, they would use less than 1 Watt of power.

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

3) A typical Processor can use from 51 to 130 Watts of power.
Just depends on what Processor it is.

Older desktop computer?
Ummm, 35 to 40 Watts.

That is why LED's can light, and maybe fans spin, but no computer.
NOT enough power to turn the Processor on.

Computer needs to be CLEAN on the inside. Inside of Power Supply too, as well as possible.

Proper method to do this procedure, post back in Comment if you need guidance.

Also remove ALL Ram Memory modules, and clean gold plated contact pins on bottom; with pencil eraser.
Reinstall. Make SURE they are seated in tight, and Lock 'ears' are locked in place.

Post in a Comment, as to the model number.
Example, DX4300-05. Should be on back of computer.

Regards,
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1) Does the monitor show No Signal?
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If not;

Use another known to be good monitor, and monitor cable, on your desktop computer. Be aware that the problem may be the monitor cable.

Or use your monitor cable, and monitor, on another KNOWN to be working computer.
The monitor isn't receiving a Video Signal. Means the signal is not reaching the monitor. Could just be a bad monitor cable.

2) If the monitor is good, and the monitor cable is good, the problem is the computer itself. The computer isn't working.

You may see LED lights light up, hear fans running, and maybe even the Harddrive spinning.

Problem could be the Power Supply.

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

B) EACH fan only 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.
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Not enough power? BIOS will not turn the Processor on.

Solution is to test the Power Supply's 3 main voltage power rails, or use another KNOWN to be good, COMPATIBLE power supply, for a test unit.

The 3 main voltage power rails are;

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B) 5 Volt power rail

C) 12 Volt power rail

Test is done with an economical Multimeter, set to DC Voltage.

Post the model number of the IBM Netvista desktop computer. You will find it on the back of the computer, next to the Windows product key,
(XXXXX-XXXXX-XXXXX-XXXXX-XXXXX), or up on the side of the computer tower.

Post in a Comment.

Regards,
joecoolvette

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