Question about Acer Aspire X3200 PC Desktop

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Tower turns on but screen says no signal?

The Acer turns on and responds to the buttons pressed on the tower but the mouse and keyboard don't work, and the monitor says "no signal". I've tried cleaning it and dusting it, replacing the fan motors, replacing the mouse and keyboard, replacing cord between monitor and tower. I don't have a clue what to do next.

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Check to be sure your monitor connection needles are seated properly. Is mouse wireless or connected to back of tower?

Posted on Jan 02, 2014

Testimonial: "Mouse is connected to the back of the tower, I've tried plugging it into the other USB ports also. The computer was working fine a few days ago, then all of the sudden it decided to hate me. Though I will check again to see if the wire is secure, thank you."

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Posted on Jan 02, 2017

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

  • 7 Answers

SOURCE: Acer veriton M410: The tower

a resolved the problem with no start,no bios,black screen at startup
change te battery with new one
the circuit must be closed
without battery doesnt start anymore !!!
we have more than 500 pcs acer veriton with diferent problems
www.vicomputers.ro

Posted on Sep 12, 2013

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Turn the computer off and then disconnenct the cable for the mouse and the keyboard along with the power cable that would be right on the top at the back panel of the computer tower.Then with the mouse,keyboard and the power cable disconected press and hold the power button for atleast 30 seconds .Then connect the cables and turn the computer on the mouse and the kwyboard should work.

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Now make sure the power cable of the monitor should be pluged in and the power cable of the tower should be pluged in.

Now to check if the montor is fine just unplug the video cable only which will show no input signal on the screen. If it shows this signal the monitor is fine. Plug back in the video cable.

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Okay im having a probblem with my lcd monitor and when i press the button on the tower to turn everything on and then press the on button on the lcd monitor it says minitor is going to sleeep and ive tried...


Sounds like the monitor is not getting a signal from the tower.
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Sounds like there may be more than one problem, so first let's make sure you shut the computer down completely:

1) Press and HOLD the power button on the computer tower until it goes completely dark. A single press often puts the computer in sleep mode, so holding the key for approximately 5 seconds usually forces a power off. After doing that, If you're still not sure if it powered off, unplug the AC power cord from the back of the computer tower for a few seconds and plug it back in. Now, make sure all other cables (monitor, keyboard, mouse) or wireless USB adapters for keyboard and mouse are securely plugged in where they are supposed to be.
2) Press the power button on the computer tower briefly to turn it back on.
3) Everything may be working now, but if not:
a) Monitor still dark? Make sure the monitor is on and plugged in, also, there is often an input source button on the bezel of the monitor to toggle between input sources (such as VGA, DVI and even HDMI). Press and wait a few seconds for a picture, repeat slowly at least 3 times.
b) Keyboard or mouse still not working? If wireless, make sure they have fresh batteries and that the wireless USB adapter is plugged into a USB port firmly. If wired, make sure the cables are plugged in firmly into the correct places on the back of the computer.

If all that fails, your new computer may be faulty and need to be returned to where you purchased it.

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