Question about Acer Aspire L100 PC Desktop

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Could be. Thanks Nick, I find 3 electrolytics with bulged tops: PEC 19 like yours and PECs 15 and 16. None of them has obviously vented but the tops are definitely convex. -clw

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Ok, they're the kiddies to replace, are they all the same manufacturer? all 1000uf 6v3's?

What happens is the electrolyte breaks down and produces hydrogen gas, sometimes they can literaly explode but more often than not they'll either blow out the top or the rubber plug on the bottom and just leak the electrolyte on the PCB.

The electrolyte is corrosive so best to snip the caps out ASAP and clean the board up with a good PCB cleaning solvent before you attempt to replace.

Sorry if your aware of this, dont mean to teach you to **** eggs ;)

Good luck

Nick Sharp

Posted on Aug 21, 2008

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Unit wont power on


It is likely to be some electrolytic capacitors on the power supply board that have fialed. Once in a while they will appear on the logic board. You will see them when you take the back off it and remove the metal RF shielding. Most of the time they will have bulged. When none are bulged you have to power up the set and carefully feel the top of each electrolytic to find the ones that feel like they are boiling inside- these are the ones that have fialed.

Replacing them with high ripple current types or the new "Polymer" series of electrolytics, should take care of it.

Mar 30, 2012 | Insignia Televison & Video

Tip

LCD TV NO POWER


The most common cause of Failure in this unit is power supply failure caused by failed capacitors. A visual inspection is The easiest way to identify and confirm bad capicitors on the power supply. Such a capacitor will show one or more of these symptoms: 1) Bulging of the vent on the top of the capacitor. (The 'vent' is the impression stamped in the top of the can. The impression forms the seams of the vent. It is designed so that if the capacitor becomes pressurized it will split at the seams relieving the pressure rather than making it explode.) 2) Sitting crooked on the circuit board as the bottom rubber plug is pushed out. 3) Electrolyte (a crusty brown substance) leaked onto the board from the base of the capacitor 4) Venting from the top of the capacitor, visible as rust-like brown deposits, or a visible hole in the vent Once the power supply is repaired or replaced your tv should work normally

on Jun 10, 2010 | Televison & Video

1 Answer

Hyundai L19T lcd monitor. Monitor powers up but power indicator light keep blinking and display image just blinking too. What may cause that?


Sounds like you have some bad electrolytic capacitors.
If you are tech savvy, open up the unit and look for capacitors that have bulging tops or leaking electrolyte / bulging at the bottom and replace any/all that look like this.
In most cases, this will fix you right up quick.
It's the right age for this to be the most likely issue.
The capacitors will be near the power input and the inverter stages of the circuitry.

Feb 22, 2011 | Hyundai ImageQuest 19 L19T LCD TFT 19" LCD...

1 Answer

Hyundai L19T lcd monitor. Monitor powers up but power indicator light keep blinking and display image just blinking too. What may cause that?


Sounds like you have some bad electrolytic capacitors.
If you are tech savvy, open up the unit and look for capacitors that have bulging tops or leaking electrolyte / bulging at the bottom and replace any/all that look like this.
In most cases, this will fix you right up quick.
It's the right age for this to be the most likely issue.
The capacitors will be near the power input and the inverter stages of the circuitry.

Feb 22, 2011 | Hyundai Electronics L19T+ LCD-TV 19"...

1 Answer

I think i may have a few bad capasitors on my LCD screen mobo. Its 4 of them that has bulging on the top of the capasitor and the bottom of one of those seem to have been deformated or something like it,...


You can swap the capacitors with same value but new one.
Only if you can get all done by 1/4 of the price of a new LCD, if not it is not worth your time to fix.
Another problem might be from the ccfl lamps open circuit.
You need to identify your problem. Cheers.

Jan 03, 2011 | ViewSonic VX2235WM Monitor

1 Answer

My HP vs19e monitor takes almost 5 minutes to "wake up". Works fine once running. It never took this long before. Any ideas?


most common problem is bad electrolytic capacitors if unit is a few years old. Take it apart and replace any swollen, ie bulging top of the aluminium can... but may be 'off-value' if not swollen. Any electronics from China will fail within 3 years due to bad electrolytic caps..

Sep 07, 2010 | HP w19 19" LCD Monitor

2 Answers

The red standby light is flashing and i cant turn the tv on


Ur power supply board is dead.U know basic electronic's and soldering?Most of the times,the power suppply board just have dead leakages gases capacitors.These capacitors alway bulges up on it top,or puff up on it top.Replaced these gases leakages capacitors will get ur tv power stable,and work again.Or tries websites like Shopjimmy.com,Ebay.com to buy a whole rerfurbish power supply board for the replacement.

May 07, 2010 | LG 42LC2D 42 in. LCD HDTV

2 Answers

Changing out electrolytics on my Acer Aspire L100


and good eyesite i hope... those boards are soldered by machine in a factory controlled by a computer (of course).
Be that as it may... determine the values of the capacitors. it's written on the side of the case. Not one side has a strip. in other words negative and positive side. ensure you get them in the same way they came out.
Finding the parts depends on where you live. i would suggest seeing if you can find a donour motherboard that you can remove them from. inspect the part first... if it is rounded on the top it's not what you want.

next is desoldering the part. don't try using a 100 watt soldering iron as you will do serious damage. mount the board on it's side with the parts closest to you that you want to desolder... a solder wick or solder ****** is your best bet as it makes for a cleaner job.
determine which two solder points hold in the part. heat them and pull (gently) up on the part. replace the capacitor making sure the orientation is proper and resolder it. careful not to heat it up to much. inspect the solder job to ensure you did not create any solder bridges to other components on the board.

do one at a time so you don't lose track of what you are doing and the orientation of the parts.

I applaud you for attempting this as i see too many things thrown out nowadays that can be repaired.

I repaired an lcd monitor with a $2.00 part and it works great.

back to the board. finish all the parts.... inspect it carefully again for solder bridges. reassemble it ... power it up ... hold your breath and watch for smoke.... if you do the job carefully you will enjoy the results.

Robert

Please rate this solution ... thanks

oh and let me know how you made out later

Aug 27, 2008 | Acer Aspire L100 PC Desktop

1 Answer

3.3 seems ok


Carl,

does the hard drive spin up? if not it may indicate the fan is on the 5V rail and not the 12V rail.

P013 definately doesn't appear correct and i would guess is the problem component.

Ive tryed googling for the part but not turned up any hits im afraid.

From what I recall the 12V rail needs to be able to source 5A so if you can find a pin compatible device you may be able to replace it as it doesnt look like the original device is easy to find.

You never know you may well find the same device on that old mobo of yours :)

Would be glad to know if you make any further progress.

Regards

Nick


Aug 25, 2008 | Acer Aspire L100 PC Desktop

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