Having problems with your IBM ThinkCentre A51 PC Desktop ?

Think Centre won't actually fully turn on the power comes on for about 1/2 a second and then goes off, on and off over and over again, with about 4 seconds between on off cycles. I replaced the power supply, tired unplugging hard drive power and cd power still no joy.


Answers :

Repair Help & Product Troubleshooting for IBM ThinkCentre A51 PC Desktop

Tips for a great answer:

- Provide details, support with references or personal experience .
- If you need clarification, ask it in the comment box .
- It's 100% free, no registration required.

Suggested Questions/Answers :

Think Centre won't actually fully turn on the power comes on for about 1/2 a second and then goes off, on and off over and over again, with about 4 seconds between on off cycles. I replaced the power supply, tired unplugging hard drive power and cd power still no joy.


... IBM ThinkCentre A51 PC Desktop

How do I replace the power supply? - Dell Dimension 4700C PC Desktop


To install a new power supply, you don't have to send your computer to a specialist; you can install one yourself. Before You Purchase. You can buy a new power supply from your computer's manufacturer, a computer store, or an independent ... Dell Dimension 4700C PC Desktop

The green power light on the PSU is on but the machine will not power up PSU is an HP5188-2627. The machine (HP m7580uk) has been on for an extended period of time but was working fine until it was finally turned off


Power supply failure, or the Power On switch. (Behind the Power On button)My money's on the power supply failure.Why?It's the leading case of computer failure. The power supply is the 'Heart' of a computer. (Processor is ... PC Desktops

Main power cord


I don't know how old your system is but what you describe sounds like a tired power supply. They will often fail after being turned off; they just don't start the necessary oscillations to continue.\015\012\015\012These are not hard to re ... HP Pavilion a340n (DQ099AABA) PC Desktop

My e-Machine W3115 automatically shuts down multiple times


1) Computer off, and unplugged from power. (Unplug from the surge protector FIRST, then unplug the power cable out of the power supply)2) Work on a table where you have plenty of room.Open the computer case. (Rear of computer, ... eMachines W3115 PC Desktop

Power supply fan is makeing a lot of noise - PC Desktops


1) Unplug the power cord and give the fan a good cleaning with a soft paint brush and a vacuum cleaner. i.e. Let the fans spin up by the vacuum and than bring the brush against it.2) If this fails, it ... PC Desktops

Does not power up


It's a dreadful way to start a day - you press the power button on your computer and nothing happens. Do not fear because all may not be lost! Follow these simple steps to determine why your computer won't turn on. Note: It is very import ... IBM ThinkPad T22 2647 Notebook

Monitor not coming on - Packard Bell Easynote R4650


It's a dreadful way to start a day - you press the power button on your computer and nothing happens. Do not fear because all may not be lost! Follow these simple steps to determine why your computer won't turn on. Note: It is very import ... HP Pavilion a305w (DM181AR) PC Desktop

-computer has gone blank


This could be anything from the monitor to bad ram or other items...i.e. software. I can't tell you what to replace but I can tell you what to check....in probable logical sequence. First, check your connections....meaning unplug and plug in again. ... Rosewill R900J 19" Flat Panel LCD Monitor

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 ... HP PC Desktops

HP won't start green flicks on then goes off when plugging in


As a pro computer repair tech I would think or look at two places the first is the power supply which it probally is if it's under warranty contact the manufacter if not there very easy to replace and you can buy one at newegg.com or many other onlin ... E-Machines eMachines Desktop PC

When i try to turn on the computer an amber light comes on and nothing else happens what is wrong?


I'm willing to wager it's a hardware issue. I'll go even further, and state it's the Power Supply.Why?The Presario Sr1520NX is now 5 years old. May I ask if the unit has been cleaned out inside? A can of compressed air f ... HP Compaq Presario SR1520NX (PX801AA) PC Desktop

Won't boot My Dell dimension 3000 won't boot. Not post, beep, HDD doesn't turn on, nothing. I replaced the power supply. Do you think it's the mother board?


1. STEP:\015\012Ensure Correct Power Button Is Used and Is Not Sticking or Broken. If the\015\012power button remains depressed during the power-on attempt, the computer\015\012immediately powers off, mimicking a "no power" symptom. Ensu ... PC Desktops

Hpw do you replace the power source on a gateway MFATXPNT ESX 500S.


How do you know the power supply is the problem? What issues are you experiencing?Have you done any trouble shooting first? It could be a bad hard drive.If you should need to replace the power supply first you need to get a ... Gateway GT5220 PC Desktop

My T2542 won't start.


There might be a problem with your mother board, or processor, or both of them. ... E-Machines eMachines Desktop PC

We recently had to disassemble our entire system. Now after moving the system, the tower lights but does nothing but blinks. We've tried detaching the power cord to reset it but that didn't help.


Perhaps the Ram Memory module/s, (Stick/s) are not fully seated in the ram memory slot/s. (Don't know if you have one, or more ram memory modules)Even if they appear to be seated by a visual inspection, the best method is to r ... Compaq Presario SR1103WM-B (PC183B#ABA) PC Desktop

No power to a SR1420NX.


Power supply light on or flashes\015\012Perform the following steps, in order, until power is restored or it is determined that there is a hardware failure:\015\012\015\012\015\012\015\012\015\012\015\012\015\012CAUTION: \015\012This product cont ... HP Compaq Presario SR1420nx (SR1420NXPS69AA) PC Desktop

MY Acer Aspire M1641-U1521A PC Desktop COMES ON BUT IT WON'T RECONIZE THE MONITOR, KEYBOARD, MOUSE, USB ECT. IS IT THE MOTHERBOARD? AND IF SO WHAT DO I NEED TO GET TO REPLACE IT??


It may be the motherboard, but more than likely it's just the power supply.Reasoning? Most (70 to 80%) of the computers that come to my shop, have this problem.The power for a personal computer power supply is rated in Watts.V ... Acer Aspire M1641-U1521A PC Desktop

My asus mother board not working - Dell Dimension 2400 PC Desktop


STEP:\015\012Ensure Correct Power Button Is Used and Is Not Sticking or Broken. If the power\015\012button remains depressed during the power-on attempt, the computer immediately\015\012powers off, mimicking a "no power" sym ... Dell Dimension 2400 PC Desktop

I have a sceptre 26 inch lcd tv and while watching it the audio went out and started making a loud humming noise, the picture was fine at this time, then all button fuctions locked up. once i unplugged tv and tryed to turn on it does nothing, the power light stayes red. i replaced power supply board still the same


The lcd tv light blinking problem.\015\012in the lcd tv there are three main parts \015\0121)the inverter board(pannel)\015\0122)the main board . ... BenQ FP931 19" LCD Monitor

Power not on


\015\012First if you have move the computer recently, check that nothing has moved inside box and unplug cards if any including memery and replace again.\015\012\015\012 ... Acer Veriton 7600GT PC Desktop

I have a cisnet computer as of yesterday it would not turn on. i have unplug it for a whole day and turned it on, but did not get any results. thank you!


It is possible that your power supply is not working anymore - that happens sometimes. This is how I would test it:\015\012\015\012Unplug the power cable\015\012 Open the computer housing (look i ... PC Desktops

Trubleshoot Motherboard what is mother board prob and how can find n fix them....


More than 70% of all computer problems are related to cabling and connections. Ensure all cables are connected and connected firmly. IDE and floppy ribbon cables and power cables can often go loose. Ensure microprocessor, memory modules, and adapters ... PC Desktops

Raidmax 500w power slowly died, then wont turn back on.


1.-Your CPU fan is working?2.-Your Power supply fan is working?If not and following your description I think that you have to replace your power supply.If you have the light on in the motherboard doesn't mean that ... RaidMax (ATX-612WBP) ATX Mid-Tower Case

My Dell XPS 420 will not turn on. Power light


Hey! Nice Computer! ( At least while it was working! Specifications show some high-end hardware parts)Steady amber light on the Power On light, means a bad power supply.The Dell XPS 420 uses the standard ATX style of power sup ... Dell XPS 420 PC Desktop
  • Start your question with What, Why, How, When, etc. and end with a "?"
  • Be clear and specific
  • Use proper spelling and grammar
all rights reserved to the respective owners || www.electronic-servicing.com || Terms of Use || Contact || Privacy Policy
Load time: 0.7905 seconds