[TechAssist] Re: Compaq 19" LCD monitor Mod.TFT8000
- From: "Jerome Silverman" <greentron@xxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Sun, 5 Jun 2005 21:25:27 -0400
When it goes out shine a flashlight on the screen from an an angle. If you
can see an image, it may well be just a backlight problem. LCD displays use
low wattage fluorescent lamps for backlight, and these are not as hard on
ballasts as projection arc lamps.
Jerry Silverman
Greentron Inc
4 Newland Ave Greenville SC 29609
Fax/Phone 864 232 3889
greentron@xxxxxxx
----- Original Message -----
From: <fremur01@xxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Saturday, June 04, 2005 6:56 PM
Subject: [TechAssist] Re: Compaq 19" LCD monitor Mod.TFT8000
> Pete,
>
> I've read information about ballast lamps going bad.
> The one I'm servicing has a good picture for less than
> 2 seconds then blinks off. Same symptoms when I inject
> a signal from computer vga connector.
>
> I've not yet torn too far into it, year of manufacture
> is 2003. Man, these things go bad fast!
>
>
> Fred
> MTS Electronics
> fremur01@xxxxxxxxx
>
>
>
> Hello there -Dont know your name,but mine shuts down
> too fast to tell.To answer your question,the flouro
> tubes age & draw too much current causing shutdown @
> convertor ps.
> So,with that,maybe isolate tubes,scope the waveforms
> etc.Highest failures I see are the tubes,bad sm
> electrolytics all over the place[main bd/convertor]
> FYI Site bylaws dictate you have a sigfile.I didn't
> even know what that was when I joined.Everyone is
> pretty helpful here.Regards,
> Pete
> "fremur01@xxxxxxxxx" <fremur01@xxxxxxxxx> wrote:
> Pete,
>
> I have a similar problem with a DELL 17" LCD in for
> service. Does this Compaq you're working on also show
> OSD or self test mode?
>
> I wonder if these units develop backlight problems
> prematurely. My experience is that HP will not sell
> service literature on their monitors.
>
> -----Original Message-----
> From: techassist-bounce@xxxxxxxxxxxxx
> [mailto:techassist-bounce@xxxxxxxxxxxxx]On Behalf Of
> majorthom@xxxxxxxxxxxxx
> Sent: Saturday, June 04, 2005 4:31 PM
> To: techassist@xxxxxxxxxxxxx
> Subject: [TechAssist] Compaq 19" LCD monitor
> Mod.TFT8000
>
>
> Comes on then blinks right out.Scoped anodes of the Hi
> V xfmr drivers and saw great swings but just hash. HP
> doesn't address the Hi V ps on the parts site.Anyone
> know where I can find one.Anyone worked on this guy?
> Regards,
> Pete
> Austin,TX 78756
>
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