Question about IBM 486DX 80486 (32G4144) Processor Board

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IBM Mother board mlack out

Well first my monitor knda lost it's power then when I got it Fixed I plugged it to my CPU...the display screen appeared for a while then all of the sudden "POOF" the screen went black.....I tried running my monitor on other CPU's and it ran normally I tried running my CPU on other monitors it does'nt show a thing....I tried to isolate the case by trying out the hardwares....My processor is working with other boards just fine but my mother board isn't...how can I trouble shoot my board...is there any possible solution? Coz i'm not that rich to actually buy another coz I have my belt tied right now.....

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  • nazarei03 Apr 11, 2008

    My power supply is working just fine and i even transferred it to a different computer.....anyway thanks alot mykel.....God bless

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Just buy another power supply with a higher power for the problem is not on your computer but on the power supply,then try to plug it in a 220v voltage regulator,but i surely recommend that you'll buy a new power supply ok

Posted on Apr 09, 2008

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1 Answer

Mother Board


if it has 2 video cards or had 2 might be disabled in bios. if not and it does not boot at all then it could be CPU Powersupply or RAM, i would start with removing RAM and see if it beeps if it does Power Supply migh be ok, put one stick of RAM back in snd see if it boots swap RAM Slots and stic around to make sure its not a RAM Problem. if still no video and just spinning fans its Trial anf error of the CPU and Power Supply i know it **** but if you have a PoSupply tester that would rule that out. if you are savy enough to remove CPU look for burnning and smell for Burn. Good Luck

Feb 24, 2010 | Intel Motherboard

1 Answer

Ibm 2611 laptop display problem what i do tell me the possible reasons


probably itz either minor case of software corruption/improper ground/cpu fan..
or major case of faulty or defective main board/ram/daughter or addon card(s)..

..plz do check the following as in order:..
the Hardware part:..
1)a)in power on mode, open/unplug the data/vga cable of the monitor from cabinet..see if raster or 'osd' is appearing on the monitor screen..if so monitor is ok..else replace the monitor and see..[not applicable in case of laptop]..
b) in case of laptop try to get output from external display unit/monitor using vga port..if there's proper display in there..the problem is probably with either the 'lcd' or 'ccfl' or 'inverter circuit'..

2) if u hv a graphics card, replace with a standby or onboard and see..[not applicable in case of laptop]..

3) unplug mains supply..pick open/remove the cmos battery..check (above +3v)..resit..

4)see if the ram(s) is loose/faulty..open clean/remove carbon & or oxide formed on the teeth with an eraser n resit it..or replace with a standby n see..

5) a) see if ur hdd is noisy or emitting any 'ticking' noise (like 'tuk tuk' or 'kirr kirr')..
b) or if the system is not supporting either the newly installed device or itz software/driver /firmware
if so, u need either a fresh os installation or ur hdd is likely to b replaced..

6)remove/clean dust neatly..dust is non-uniform in nature n may cause jam/short circuitry/excess resistance n many more..resulting an increase in heat..

7) open the CPU Heat-Sink with fan out of the socket..put some "Heat Sink Compound" (available in local electronics chip level spare market) between the cpu/processor and the CPU Heat Sink *** fan..resit/fit it tightly in position..

8)on main/mother board..see with a debug card for mb error..may b short..look for defective capacitors(esp above1000mfd)/mosfets..go through the mb's south bridge n the circuit lie around atx connector..the crystal clock generator (if cpu isn't heating up)..

9) [in case of desktop] the smps itself may b defective/faulty..check the outputs of smps viz. 0v (black~ground); +12v (yellow); +5v (red, green~ps-on, violet~pg& grey~sb); -12v (blue); -5v(white); +3.3v(orange)..the 'oscillator and error amplifier ic', or pwm switching regulator circuit..look for defective protector-transformer/resistance(esp 4.7k)/mosfet..
check the battery n adapter [main power], in case of laptops..

if u r not a professional, always better to seek advise from ur system admin/vendor....

Nov 18, 2009 | IBM 2611 1400I (10L1175) Motherboard

1 Answer

Desktop screen is blank even when the cpu and monitor indicator a


It looks like issue with either mother board or processor.
open the box and remove all memey and power it on. if it makes a beep sound, there is no issue with processor, else we suscpect processor. If it make beep sound, it might be mother board issue. And for checking monitor working condition, remove monitor data cable and see no cable connected messages comes in monitor or not

Oct 13, 2009 | Dell Computers & Internet

1 Answer

Intel dg31pr mother board why dont show display?


First check your num lock led if it on and off when you press num lock key then your cpu is ok.
Then therer is issue with monitor to cpu loose connection
or
Screen resolution problem.
For that when you power up press F8 key then enter in enable vga mode.then go to control panel and dispaly then settings then change screeen resolution to 1024*768 then apply and ok.
Aslo reconnect connection from monitor to cpu vga port.
Also check in bios some times your harddisk is not detected proeprly.
If problem still remains open cpu cabinet and reconnect data cable and power cable to harddisk.
Refix RAM memory.
Pull cmos cell for 15 minutes then check.
Thanks for using fixya.
Pls rate solution if it help you .

Jul 18, 2009 | Intel DG31PR Motherboard

2 Answers

On screen display keeps appearing on, and usually


hi..i think you have a problem the CPU/Computer that's whystays on screen for so long.1st step check the IDE cable connection form the mother board to Hard Drive and 2nd check the memory or check all hardware`s.Good Luck and Have a nice day

Jun 17, 2009 | HP mx705 17" CRT Monitor

1 Answer

No Display on IBM G42 CRT Monitor's screen


if u change monitor . you came to know fault of monitor or cpu., if monitor works cpu is not woking properly..some itime we face same problem to creat by changining highgraphic. we can reduce graohic by using f8. re instiling xp we can solve that type of some problem.

Jun 15, 2009 | HP LP2065 (Silver) 20.1 inch LCD Monitor

1 Answer

Dell model No. 1504FP will turn on for 3 sec then off


THE PROBLEM IS THE MONITOR IT SELF.

IT IS TIME TO BUY A NEW MONITOR. I KNOW ALOT OF OF US CANNOT AFFORD A NEW MONITOR EVERY TIME ONE BRAKES, I HAVE FOUND THAT SECOND HAND STORES SALE THERE MINITORS FROM 1-2 DOLLARS PER INCH, I PICKED UP IBM FLAT SCREEN 20" AROUND 20.00 USD. AND IT STILL RUNNING AND I HAVE HAD IT FOR A YEAR OR MORE NOW.

May 12, 2009 | Dell 1503FP 15" LCD Monitor

1 Answer

Red colour missing


hello
red colour if missing from mother board then you can fix it from graphics properties of your mothrboard driver
but red may also due to monitor,there should be black colour appeaqrs on screen instead of red.
to solve this you have to take your monitor from where you have purchased
if it is in warranty or gurantee then dont take to third party
the fault in monitor may be due to
fault in monitor cable
also check that cable is not loose
try to plug the cable on cpu again
another fault is inside the monitor
also try to on monitor using detaching monitor cable from cpu,message come on monitor ,if in that message red colour appear,then monitor gun is ok
and problem is in monitor due to desoldiring
if you know about soledring than you can fix this problem yourself only if you know otherwise take it to shop from where you sold it

Nov 22, 2008 | Intel D101GGC Motherboard

1 Answer

Monitor problem


Hi, sandjkroll, this kind of problem could be because of ur monitor or even because of the on board display  card on ur motherboard. To check ur monitor, u unplg display cable which goes to ur cpu and the power cable which goes to ur cpu. 
Them connect the power plug to mains, so no cable from the monitor should go to the CPU. Then u swithch on the the poower suply, and on the monitor. I
If ur monitor displays elongated screen still, and shows signal not found,and no display comes that means ur monitor needs to be send for service. and if there are no elongated screen and says no signal found, ur monitors fine, ur motherboad has a problem

From
Deepak

Sep 28, 2008 | Microsoft ChiMei CMV938D 19" Widescreen...

1 Answer

Pc starts and runs but wont boot up monitor shows no signal


1) When you turn on the computer, watch and listen for:

a) power supply fan, (power is on)
b) chassis lights (power is on)
c) ticking sound during memory test
(the BIOS POST is running)

d) beeps or rhythmical error codes
(POST failed, bad CPU, CHIP set, memory or video)

e) Monitor either comes on, displays garbled video,
displays a No Sync or No Signal message...

No depending on how far it gets:

Check power supply, cables etc.
Check video cable.
Check monitor with a different PC

Now unplug the power cord, with the computer still
on, this will help drain any internal capacitors.
Wait 5 minutes, then shut off the switches,
and open up the box. try the following,
one at a time:

2) Remove all I/O cards except the video card,
and don't plug them back in until the problem
is fixed. Unplug all the ribbon cables from
the mother board as well:

Hard drives, CD drive, floppies etc.

Make sure you make notes about how to plug it
back in, and cable orientation !!!

0) Re-seat all power cables: Red, Black Yellow harnesses.

1) Unplug and re-seat the video card

2) Similarly, re-seat all memory SIM/DIM modules,

3) Re-seat the CPU

4) Replace the video card

5) Replace memory, CPU or whole mother board,

Plug the good parts back in one at a time,
and test the machine.

Save for the power supply, there really is NO way to test
and isolate a bad module except by swapping/ trial and error
because of inter-dependencies.

For example a bad I/O card, any I/O card, can short circuit
the I/O bus, causing all other plug-in cards to stop working,
or even the main mother-board to freeze during the POST.

A bad power supply ditto.

A bad memory chip ... ditto.

The type of electronic instruments required to actually
test modern computers running at Gigahertz speed cost
hundreds of thousands of dollars, some cost millions, and
are only available to hi end manufacturers

Even the power supply will not power up for a voltage check
if the mother board is bad, although you can use a jumper
on the green wire to ground to force it on, when you unplug
the power connector from the mother-board, if you are brave.

Computer shops carry a lot of spare parts, and their service
department has gutted computers rigged up as test jigs.

They trouble shoot your system by either plugging your
stuff into their jigs, one at a time, or by plugging known
good components into your computer until the problem
is fixed.

This if of course possibly dangerous, since one bad part
can also fry other good parts that plug into it, or that it
plugs into. The compute shops, of course charge you
enough to make up for this.

If a computer is partially operable, it is also possible to
run software diagnostics.

If not, swap and pray is the only way.

Hope this helps

Please rate my answers, martin.

Jun 25, 2008 | HP Computers & Internet

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