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Crumbtrail TV Forums: TV Equipment: TV Repair Forum:
32" Acer powers up, won't turn on.

 

 


DiscoRage
New User

Aug 17, 2008, 12:39 AM

Post #1 of 10 (14464 views)
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32" Acer powers up, won't turn on. Can't Post

I have an Acer AT3201W that I purchased in November of '05. The issue is that it will power up, meaning it goes in to standby mode and the LED is amber, but it won't actually turn on.

It progressively got worse. For a while I just had to turn the power off completely, turn it back on then hit the power button. It started getting worse, I would have to flick the rocker switch back and forth 10 times before it would finally turn on. I would keep it on for weeks in a row because I was scared it wouldn't turn on at all next time, and that's exactly what happened. It's dead. Powers up, but no matter how much I cut the power or toggle the rocker switch, it won't turn on.

I haven't been able to find much about this TV. Someone posted the same question about a similar model having the same problem on fixya.com. This was the only answer given:

"more than likley , you have filters in the power supply that are not filtering properly. look for filters that look like thier tops are popping off,"

I don't really know what that means, or if it's something I can fix myself. I've most of the TV taken apart. I looked at the power supply and it doesn't look like anything is loose. I tested the only fuse in there for continuity and it's fine.

Another thing I think it could be, is the PCB with the buttons and IR receiver, because although the remote functions fine, the TV has never been very responsive. It works but I usually had to mash the buttons or hold them down for the thing to do what the remote was telling it to do.

There have been two other issues in the past. First, and this started about two months after buying the set (I think it may have been a floor model though), the colour of the picture would change. Almost like the colours had been inverted, but the colours on screen were mostly very bright hues of pink, green and blue. The set was hooked up to a Bell Expressvu 9200 receiver with an HDMI (receiver) to DVI (tv set) cable. To remedy the issue, I had to unplug the cable from the set, cut the power, then turn it back on. This only happened maybe 5 times of the 2 year life span of the set.

The last issue is that even though it's an LCD, it seems to have suffered from burn in. From the centre of the screen, the picture progressively got darker, in a sort of cloudy looking pattern. The darkening stopped RIGHT at the edge of the 4x3 portion of the screen. Hard to describe. This is another problem that progressively got worse.

I'm not sure of any other information that would be needed to help remedy this. I really hope someone can help, I don't want to waste money getting this thing repaired, and I don't really have the money to drop on a whole new set.

I'm going to be sitting at the computer most of the night, so if anyone needs more information, I'll probably reply within about 2 minutes.



techchris
Veteran

Aug 17, 2008, 11:10 AM

Post #2 of 10 (14361 views)
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Re: [DiscoRage] 32" Acer powers up, won't turn on. [In reply to] Can't Post

"look for filters that look like thier tops are popping off," this should read look for electrolytic capacitors with the top bulging I suspect. you have a power supply fault of some sort maybe 5volt line is low which would effect the remote sensor as well.Could be a resistor gone high value or electrolytic capacitors low value or open circuit. the darkening could be the back lights in the screen failing in which case the tv is a write off as they are built into the screen.


DiscoRage
New User

Aug 17, 2008, 6:10 PM

Post #3 of 10 (14350 views)
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Re: [techchris] 32" Acer powers up, won't turn on. [In reply to] Can't Post

Is this typically something that could be done at home? How hard is it to find the defective cap or resistor? I'm perfectly comfortable replacing it myself; finding it, that's a different story.

If not, how much would it cost to have something like this professionally fixed?


pepper
New User

Mar 5, 2009, 12:14 AM

Post #4 of 10 (13888 views)
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Re: [DiscoRage] 32" Acer powers up, won't turn on. [In reply to] Can't Post

Hi there i ws the guy on foxya.com with the acer that has sound but no picture. I took it to a repair shop and they told me it needs a Inverter (i guess sin the power supply and it would cost $400.00 forparts and labour. I would guess that inverter is in the power supply module. does anyone know???? i think if i can find some information i can pbobably repace it myself.

ps does anyone knw if these tvs hold a charge as the old ones (withthe picture tubes) used to??
Regards
frustrated


techchris
Veteran

Mar 5, 2009, 8:49 AM

Post #5 of 10 (13881 views)
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Re: [imclaren] 32" Acer powers up, won't turn on. [In reply to] Can't Post

the inverter board supplies voltages to the backlights in an LCD screen.there is no residual charge so if you can get the board its easy to change


pepper
New User

Mar 5, 2009, 4:56 PM

Post #6 of 10 (13877 views)
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Re: [techchris] 32" Acer powers up, won't turn on. [In reply to] Can't Post

Thanks for that and would that be the fix for the screen not lighting up? Do you know where i can find an schmetic so i can identigy the board? and possibly find apart number ? much appreciated.
Thanks
Ira


pepper
New User

Mar 5, 2009, 5:04 PM

Post #7 of 10 (13876 views)
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Re: [techchris] 32" Acer powers up, won't turn on. [In reply to] Can't Post

Hi Chris what does an inverter board looks like? and how many of those are in the tv? Do you have a picture? or part of an schmetic? so i can at least identify it> it is a circuit board? pull our-push in? no soldering??? anything will be greatly appreciated.
thanks


techchris
Veteran

Mar 5, 2009, 8:06 PM

Post #8 of 10 (13874 views)
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Re: [imclaren] 32" Acer powers up, won't turn on. [In reply to] Can't Post

the inverter board has several transformers in a line and each drives a tube light in the screen.board usually mounted on one side of the tv.I have no info on Acer tv's at all sorry,but it should be plug in connectors.First look through a hole in the back of the screen to see if the backlights are on or not.if not lit then either the inverter board is faulty or the screen is faulty as the lights are built in.


pepper
New User

Mar 11, 2009, 4:20 PM

Post #9 of 10 (13830 views)
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Re: [imclaren] 32" Acer powers up, won't turn on. [In reply to] Can't Post

Hi there this iw what i found:

this is what the board looks like and here:
The defective inverter will cause the following symptoms:
* No Picture on screen but LCD TV still has Sound.
* Screen Flash on and Off between 1/2 to a few seconds, but power indicate light stays on and TV still has sound.

This new V144-F02 is compatible with the following model:
Philips 32MF605W/17 32 inch LCD TV

No technical skills require performing the replacement. Anyone can do it. It is easy, economic and convenience to repair your Defective LCD Monitor. Need help on installation? Please visit us at www.lcdparts.net/howto/techsupport.aspx, hope this helps you
Regards


steven hill
New User

Aug 25, 2009, 9:54 PM

Post #10 of 10 (13251 views)
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Re: [DiscoRage] 32" Acer powers up, won't turn on. [In reply to] Can't Post

hi there.i have a complete and working set,needs a screen.psu and inverter panel are fine.im in scarborough,uk.sounds like your set needs a power supply....all other bits available.email me at tellyman139@hotmail.com if you have not sorted it yet.
regards,
steve.

 
 
 


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