Acer 22 inch AL2223W: Monitor goes dark/black after a second - Page 2

cwho · 08-27-2009, 03:03 PM

Thanks for this great thread!. I have two of these both dead as described above. I had taken one apart somewhat but not got to the inverter board.

Do you think replacing the transformer cures the overheating problem? IE does the new transformer seem to run cooler or is there a design flaw (or the bad caps causing the transformer to heat) ?

It sounds like a good and easy fix and I am all about keeping things working rather than replacing them or shipping them across the world for a simple part, however, if the design is bad and it is just going to overheat again there does not seem much point.

Thanks
Charles

kbsvr.com · 08-28-2009, 09:07 PM

The inverter transformer doesn't seem to run very hot. I think it's just the windings are too tight and have no room for expansion or contraction from heating and cooling and they are coated with an epoxy it seems so it's very rigid. I believe because of these tight windings and the tight wire connections to the terminals that may cause the wire to break in the transformer.

Any one else have a theory?

johanna0507 · 08-30-2009, 04:07 AM

Well -- my 24 inch version of this monitor was broken.
It had several of the symptoms that have been described here.
I sent it off to Acer on warranty (slight white lie regarding purchase date was needed... ). Anyway, now it's back and working fine. This cost me nothing apart from the packaging of the monitor for shipping back to Acer, and some time in organising it.

cwho · 08-31-2009, 09:36 AM

Regarding the transformer and running hot. We had to of these bought at the same time. One, on my desk, was definitely running hot. An area on the screen became discolored and it was hot to the touch. The other did not do this, one day it just up an died. Of course what we need is someone who got theirs repaired by Acer to reopen this and find out if it is a redesigned board or just new parts... Any takers...

MilosObilic1402 · 09-20-2009, 05:16 PM

Quote:

Originally Posted by Xypher Orion

Hey! Thanks for the thread. A coworker's just went out this morning and after tearing it apart it appeared to have the same issue with the transformer. Although I'd watch out for those 220uF 25v caps in the bottom left hand of that picture, they were bulged badly. Its being sent in for warranty replacement, but I thought I'd let y'all know about the bad caps.

I have noticed those first as i have the same problem with this monitor i have already took them out and found replacements on ebay but i got on this forum to see if anywone else had the same problem and weather those were the cause of the problem and i see that you noticed those capacitors too. one is 220uf 25v and the other 470uf 10v. i was wondering if i could use capacitors with higher voltage rating or lover as i can probably dig em out of old ps2 or something and radioshack has them but not same as what i need.
those two capacitors are the only once that i noticed being buldged and i didnt do any further test as i thought it was that or the back lights.

pupuke · 10-09-2009, 04:26 PM

Quote:

Originally Posted by kbsvr.com

CHECK THIS OUT!

I found a suitable replacement part. There may afterall be many other like numbered parts that would fix this. I just got lucky as another local guy that also repairs monitors just happened to have a similar part in his parts stock. Even he had no idea he had it!

See in the pic's the part numbering is slightly different and since the date code is from 2005, these have been around for a while really.

Replacement part soldered in...

Got it all together and...

Voila!! ITS ALIVE!!

Beauty eh!

I paid all of $10 Canadian and it's fixed.

KBSVR,

Do you still have the pictures of the part you replaced? I need to do the same and was hoping to find the part number for the one you used. Thank you.

08-27-2009, 03:03 PM	#21 (permalink)
cwho Registered User Join Date: Aug 2009 Posts: 2 OS: Win XP	Re: Acer 22 inch AL2223W: Monitor goes dark/black after a second Thanks for this great thread!. I have two of these both dead as described above. I had taken one apart somewhat but not got to the inverter board. Do you think replacing the transformer cures the overheating problem? IE does the new transformer seem to run cooler or is there a design flaw (or the bad caps causing the transformer to heat) ? It sounds like a good and easy fix and I am all about keeping things working rather than replacing them or shipping them across the world for a simple part, however, if the design is bad and it is just going to overheat again there does not seem much point. Thanks Charles

08-28-2009, 09:07 PM	#22 (permalink)
kbsvr.com Registered User Join Date: Jun 2009 Location: London, Canada Posts: 8 OS: Windows XP SP3	Re: Acer 22 inch AL2223W: Monitor goes dark/black after a second The inverter transformer doesn't seem to run very hot. I think it's just the windings are too tight and have no room for expansion or contraction from heating and cooling and they are coated with an epoxy it seems so it's very rigid. I believe because of these tight windings and the tight wire connections to the terminals that may cause the wire to break in the transformer. Any one else have a theory?

08-30-2009, 04:07 AM	#23 (permalink)
johanna0507 Registered User Join Date: Jun 2009 Posts: 7 OS: Vista Ultimate	Re: Acer 22 inch AL2223W: Monitor goes dark/black after a second Well -- my 24 inch version of this monitor was broken. It had several of the symptoms that have been described here. I sent it off to Acer on warranty (slight white lie regarding purchase date was needed... ). Anyway, now it's back and working fine. This cost me nothing apart from the packaging of the monitor for shipping back to Acer, and some time in organising it.

08-31-2009, 09:36 AM	#24 (permalink)
cwho Registered User Join Date: Aug 2009 Posts: 2 OS: Win XP	Re: Acer 22 inch AL2223W: Monitor goes dark/black after a second Regarding the transformer and running hot. We had to of these bought at the same time. One, on my desk, was definitely running hot. An area on the screen became discolored and it was hot to the touch. The other did not do this, one day it just up an died. Of course what we need is someone who got theirs repaired by Acer to reopen this and find out if it is a redesigned board or just new parts... Any takers...