emachine w5243 wont start

Emachine / W5243
March 20, 2010 at 17:44:02
Specs: Windows Vista
This morning when I pressed enter to wake up my computer , it shut off and now won't restart. I unplugged it waited and plugged it back in, all I hear is the cpu fan blowing like crazy. I replaced the power supply and it still does the same. when I press the power on button I get no lite and no start, but the cpu fan comes rite on. I can hear the h/d start up but nothing comes on . no beep, no nothing!

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March 20, 2010 at 21:20:36
If you're SURE you connected the new power supply correctly, and you HAVE NOT changed which ram you have installed since the computer was working...

Look at the brand of the original power supply you removed. If it's BESTEC , it probably failed and it probably damaged your mboard while doing so.
Your problem is VERY COMMON with emachines desktop computers that have BESTEC power supplies, which is most of them, if not all of them.

If you're interested in trying it, if you replace the mboard, the odds are very good your system will work fine because there usually isn't anything wrong with anything else connected to the mboard.

Go here, and look up which mboard is in your w5243 model:

Then click on the highlighted mboard model link to see the unofficial info about the mboard there, and who actually made the mboard.

E.g. If you have a North American model, the mboard manual is here, but your mboard has an emachines bios version - DO NOT use ECS bios updates on a mboard with an emachines bios version, and visa versa, otherwise your mboard MAY NOT BOOT after you flash.

In most cases, the company that actually made the emachines system - Trigem in Korea - did not make the mboard - it was supplied to Trigem by a major mboard manufacturer, and merely has an emachines bios version on it.

Use the actual mboard model to search with, along with emachines, on the web, and you'll probably find a used mboard that was in an emachines system.
E.g. Intel Dxxxx Sea Breeze emachines

Make sure the ad says that the mboard has been TESTED and been found to work. It should say it has an emachines bios version.

You can use any mboard that is compatible with your cpu and ram that does not have an emachines bios version on it, as well, BUT in that case, you may NOT be able to restore the original emachines software contents of the hard drive when you use a Recovery disk or disk set for your model, because Recovery programs often check to see if the mboard has the brand name's bios version on it, and if doesn't, the Recovery program will often refuse to install the original brand name supplied software.

If you have added, or have upgraded, a video card in a mboard slot....

Your power supply must have at least the minumum capacity required to support a system with the graphics card you are using installed, or the max graphics card you might install in the future.
(Onboard video - video built into the mboard - IS NOT A CARD ! )
If that info is not in the ad for the video card, you can go to the video card maker's web site and look up the specs for the model - often under system requirements - the minimum PS wattage, and, more important, the minimum amperage the PS must supply at 12v is stated. If you don't find that, any card with the same video chipset including any letters after the model number has very similar minimum PS requirements. Some power supplies have two or more +12v ratings - in that case, add those ratings to determine the total +12v current capacity.

If you're a gamer....
In most if not all cases, the max capacity rating of the PS is an intermittant rating. It's recommended that you do not load your PS to any more that 80% of that rating if you are going to be using something that puts a constant load on it, such as playing a recent game for hours on end. In that case, you multiply the min capacity stated for the system with the particular video chipset on the card by 1.25 to find the min. capacity of the PS you should get.

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March 21, 2010 at 06:14:52
thanks for the info. i replaced the ps and it still does the same , cpu fan , but no power lite on. i hear the hd start up ,but thats all. even the dvd won't open. i'll ck out your suggestions. i have a made in china mb.
appericate you help.


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September 20, 2010 at 07:54:53
I got the same comp and problem. But my psu is Delta. I also noticed one of the black wires on P7 connector shorted. What could have caused this? and did this damage my mobo.

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Related Solutions

October 8, 2010 at 12:17:58
emachines are well known for bulging capacitors behind the cpu. I have fixed 3 emachines with identical problems. "coincidence"? i think not... 25$ fix if you know how to solder.

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November 3, 2010 at 13:43:19
I know how to solder but don't know the first thing about computers, where can I find a picture of these "bulging capacitors" you speak of, or could you please describe them.

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November 4, 2010 at 08:11:30

Some mboards develop this problem - electrolytic capacitors were installed on them that were not properly made, and they fail eventually - the mboard manufacturer didn't know they were improperly made at the time the mboard was made.

Open up your case and examine the mboard to see if you have bad capacitors, and/or other findable signs of mboard damage .

This was the original bad capacitor problem - has some example pictures.
History of why the exploding capacitors and which mboard makers were affected:

What to look for, mboard symptoms, example pictures:
Home page that site
- what the problem is caused by
- he says there are STILL bad capacitors on more recent mboards.

Pictures of blown capacitors, other components, power supplies, Athlon cpu's, etc.:

Whether or not it's worthwhile replacing the defective capacitors depends on a bunch of things.

- The bad capacitors should be replaced before the mboard stops working. Usually the mboard "misbehaves" for a while before it won't boot at all - e.g. random black screen rebooting, it may not boot sometimes but does sometimes, it may restart when you select shut down, etc., etc. If you wait until the mboard will no longer boot, it's likely that even if you replace the defective capacitors, something else has probably been damaged and the mboard still won't boot.

- look at the brand markings of the capacitor(s) that failed. Other capacitors made by the same brand are just as likely to fail. The same brand may be different colors on the mboard, depending on the value of the capacitor. If there are only a few made by the same brand, then replacing them with locally available capacitors is a not too expensive option. If there are many made by the same brand, then it's too costly to get the capacitors locally.
The badcaps web site has - links on the left to economical available premade or custom capacitor kits, and/or you can ship the mboard to him and he will replace the capacitors for a flat fee (including the capacitors) plus shipping (North America only). However, you can often buy a good used or old stock new mboard that is not the same model but is compatible with your cpu and ram for less than it costs for him to replace the capacitors. (If you're in the UK or Europe, there is a guy who has a site in Holland who can do the same thing.)
Personally, I have not bothered replacing capacitors on several mboards because too many were defective or too many were the same brand as the failed ones, or the mboard was not booting at all.
The only mboard I have replaced the capacitors on was still working intermittently, and only two capacitors were made by the brand.

- sometimes the capacitor leads go through metal tubes - you must be very careful that when you remove the leads that you don't dislodge or lose the tubes - the connection the tube makes between layers of the mboard must remain good.

- You must be careful with your soldering technique. You should use a low wattage soldering iron, say, 25 watts or less, and you will need some sort of solder sucking device - manual ones are inexpensive. It can also be useful to have a set of tiny (numbered or lettered, much smaller than 1/16" ) drill bits, to drill out lead holes you find difficult to remove the solder from. You must use an electrical / electronic type of solder - e.g. 60/40 tin to lead, or better. You can use rosin core solder but the rosin may need to be cleaned up afterward. You must not overheat the copper traces on the mboard such that they detach.

NOTE that power supplies can have defective capacitors too, and that's much more likely if it's a el-cheapo power supply. That's probably a frequent reason an el-cheapo power supply fails. Sometimes you can hear faint hissing from the PS when the computer is not running when the PS is still connected to live AC, when a cap is in the process of failing.
Power supplies always have a fuse on their board, but in most cases, it does NOT blow when the PS malfuntcions or fails. If it IS blown, replacing it is fruitless, and bridging it can be disastrous. In the real world, it merely reduces the possiblity of the PS catching on fire while failing.

In most cases, emachines desktop computers DO NOT use mboards made by the same company that actually makes the emachines systems - Trigem in Korea - the mboards are made by other major mboard makers. Therfore, the mboards in emachines system arean't any more likely to have defective capacitors than other systems.
If you have an emachines desktop system, in most cases you can look up which mboard it has and who actually made in on this excellent third party web site:

Since most if not all emachines desktop systems have the trouble prone BESTEC power supplies, when a BESTEC power supply malfunctions or fails completely, when users replace the power supply and find the system still won't boot, they often assume it was the mboard that failed. In the case of the system originally having a BESTEC power supply, it's many times more likely it was the BESTEC power supply malfunctioning or failing completely that trashed the mboard, not the other way around.

BESTEC power supplies are also used in some cheaper models of other brand name computers, e.g. HP, Compaq, and in that case, the system was often actually made by Trigem as well, though the case is likely to be brand name specific.
Gateway computers are part of the same company group as emachines computers, so they can have BESTEC PSs and have been actually made by Trigem as well.

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