LCD Troubleshooting guide?
in [Laptops]
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From: Ted on 8 Aug 2010 15:12 Is there a complete [and free] troubleshooting guide on the Internet anywhere for diagnosing LCD problems? I'm trying to diagnose a problem on my laptop (Acer 5630). The screen is blank. I can see a dim image when I shine a flashlight on the screen but switching to an external monitor is also blank. Would one or more of backlight, chip or interverter problem, perhaps, cause a dim image on the LCD but no external display? Thanks, Ted
From: BillW50 on 8 Aug 2010 15:51 In news:8525a6fa-5425-4193-8929-054101243537(a)g19g2000yqc.googlegroups.com, Ted typed on Sun, 8 Aug 2010 12:12:06 -0700 (PDT): > Is there a complete [and free] troubleshooting guide on the Internet > anywhere for diagnosing LCD problems? > > I'm trying to diagnose a problem on my laptop (Acer 5630). > > The screen is blank. I can see a dim image when I shine a flashlight > on the screen but switching to an external monitor is also blank. > > Would one or more of backlight, chip or interverter problem, perhaps, > cause a dim image on the LCD but no external display? > > Thanks, > Ted External display? You mean on an external monitor it is blank too? Boy that would be really bad if true. If not, see below. If it only appears dark on the internal display, it is about a 49% chance it is the inverter. And a 49% chance it is the florescent tube. The other 2% would be the cable or the motherboard itself. Troubleshooting whether it is the inverter or the lamp is pretty tough without expensive equipment. And it is much cheaper to pick one or the other and to try it. Inverters are generally easy to replace and used ones are generally cheap. So that is probably your first try. Lamps can be very hard to replace on the other hand. And most shops replace the whole LCD panel complete with the lamp inside instead. This is really costly. Although you can get used LCD screens much cheaper. Although you don't know how much longer the lamp will last. So there you go. If there is a troubleshooting guide out there, it is all pretty easy as I just stated. The trick is guessing the right part first. -- Bill Gateway MX6124 ('06 era) 1 of 3 - Windows XP SP2
From: Ted on 8 Aug 2010 17:47 On Aug 8, 3:51 pm, "BillW50" <Bill...(a)aol.kom> wrote: > Innews:8525a6fa-5425-4193-8929-054101243537(a)g19g2000yqc.googlegroups.com, > Ted typed on Sun, 8 Aug 2010 12:12:06 -0700 (PDT): > > > Is there a complete [and free] troubleshooting guide on the Internet > > anywhere for diagnosing LCD problems? > > > I'm trying to diagnose a problem on my laptop (Acer 5630). > > > The screen is blank. I can see a dim image when I shine a flashlight > > on the screen but switching to an external monitor is also blank. > > > Would one or more of backlight, chip or interverter problem, perhaps, > > cause a dim image on the LCD but no external display? > > > Thanks, > > Ted > > External display? You mean on an external monitor it is blank too? Boy > that would be really bad if true. If not, see below. > > If it only appears dark on the internal display, it is about a 49% > chance it is the inverter. And a 49% chance it is the florescent tube. > The other 2% would be the cable or the motherboard itself. > Troubleshooting whether it is the inverter or the lamp is pretty tough > without expensive equipment. And it is much cheaper to pick one or the > other and to try it. Inverters are generally easy to replace and used > ones are generally cheap. So that is probably your first try. > > Lamps can be very hard to replace on the other hand. And most shops > replace the whole LCD panel complete with the lamp inside instead. This > is really costly. Although you can get used LCD screens much cheaper. > Although you don't know how much longer the lamp will last. > > So there you go. If there is a troubleshooting guide out there, it is > all pretty easy as I just stated. The trick is guessing the right part > first. > > -- > Bill > Gateway MX6124 ('06 era) 1 of 3 - Windows XP SP2 Thanks for the help... Yes I do mean an external monitor. It's blank, too. But it's odd (to me) that there's a dim image on the LCD as seen with a flashlight, so the video chip must to be working, which is why I'd expect an external monitor to work. (I tested the monitor and cable on another computer-- they're okay) I'll change the inverter. If that works, fine. If not, I'll try the backlight lamp. If that doesn't work, I'll probably give it up. Thanks, Ted
From: BillW50 on 8 Aug 2010 18:04 In news:39814a34-60f4-4e72-8ec9-9a23d5017363(a)z28g2000yqh.googlegroups.com, Ted typed on Sun, 8 Aug 2010 14:47:43 -0700 (PDT): > On Aug 8, 3:51 pm, "BillW50" <Bill...(a)aol.kom> wrote: >> Innews:8525a6fa-5425-4193-8929-054101243537(a)g19g2000yqc.googlegroups.com, >> Ted typed on Sun, 8 Aug 2010 12:12:06 -0700 (PDT): >> >>> Is there a complete [and free] troubleshooting guide on the Internet >>> anywhere for diagnosing LCD problems? >> >>> I'm trying to diagnose a problem on my laptop (Acer 5630). >> >>> The screen is blank. I can see a dim image when I shine a flashlight >>> on the screen but switching to an external monitor is also blank. >> >>> Would one or more of backlight, chip or interverter problem, >>> perhaps, cause a dim image on the LCD but no external display? >> >>> Thanks, >>> Ted >> >> External display? You mean on an external monitor it is blank too? >> Boy that would be really bad if true. If not, see below. >> >> If it only appears dark on the internal display, it is about a 49% >> chance it is the inverter. And a 49% chance it is the florescent >> tube. The other 2% would be the cable or the motherboard itself. >> Troubleshooting whether it is the inverter or the lamp is pretty >> tough without expensive equipment. And it is much cheaper to pick >> one or the other and to try it. Inverters are generally easy to >> replace and used ones are generally cheap. So that is probably your >> first try. >> >> Lamps can be very hard to replace on the other hand. And most shops >> replace the whole LCD panel complete with the lamp inside instead. >> This is really costly. Although you can get used LCD screens much >> cheaper. Although you don't know how much longer the lamp will last. >> >> So there you go. If there is a troubleshooting guide out there, it is >> all pretty easy as I just stated. The trick is guessing the right >> part first. > > Thanks for the help... > Yes I do mean an external monitor. It's blank, too. But it's odd (to > me) that there's a dim image on the LCD as seen with a flashlight, so > the video chip must to be working, which is why I'd expect an external > monitor to work. (I tested the monitor and cable on another computer-- > they're okay) I'll change the inverter. If that works, fine. If not, > I'll try the backlight lamp. If that doesn't work, I'll probably give > it > up. > > Thanks, > Ted An inverter and the lamp within the laptop should have no way any effect on an external monitor. Can you see a display on the external too, but it is just really dark? -- Bill Gateway MX6124 ('06 era) 1 of 3 - Windows XP SP2
From: Sjouke Burry on 8 Aug 2010 18:31
Ted wrote: > On Aug 8, 3:51 pm, "BillW50" <Bill...(a)aol.kom> wrote: >> Innews:8525a6fa-5425-4193-8929-054101243537(a)g19g2000yqc.googlegroups.com, >> Ted typed on Sun, 8 Aug 2010 12:12:06 -0700 (PDT): >> >>> Is there a complete [and free] troubleshooting guide on the Internet >>> anywhere for diagnosing LCD problems? >>> I'm trying to diagnose a problem on my laptop (Acer 5630). >>> The screen is blank. I can see a dim image when I shine a flashlight >>> on the screen but switching to an external monitor is also blank. >>> Would one or more of backlight, chip or interverter problem, perhaps, >>> cause a dim image on the LCD but no external display? >>> Thanks, >>> Ted >> External display? You mean on an external monitor it is blank too? Boy >> that would be really bad if true. If not, see below. >> >> If it only appears dark on the internal display, it is about a 49% >> chance it is the inverter. And a 49% chance it is the florescent tube. >> The other 2% would be the cable or the motherboard itself. >> Troubleshooting whether it is the inverter or the lamp is pretty tough >> without expensive equipment. And it is much cheaper to pick one or the >> other and to try it. Inverters are generally easy to replace and used >> ones are generally cheap. So that is probably your first try. >> >> Lamps can be very hard to replace on the other hand. And most shops >> replace the whole LCD panel complete with the lamp inside instead. This >> is really costly. Although you can get used LCD screens much cheaper. >> Although you don't know how much longer the lamp will last. >> >> So there you go. If there is a troubleshooting guide out there, it is >> all pretty easy as I just stated. The trick is guessing the right part >> first. >> >> -- >> Bill >> Gateway MX6124 ('06 era) 1 of 3 - Windows XP SP2 > > Thanks for the help... > Yes I do mean an external monitor. It's blank, too. But it's odd (to > me) that there's a dim image on the LCD as seen with a flashlight, so > the video chip must to be working, which is why I'd expect an external > monitor to work. (I tested the monitor and cable on another computer-- > they're okay) I'll change the inverter. If that works, fine. If not, > I'll try the backlight lamp. If that doesn't work, I'll probably give > it > up. > > Thanks, > Ted It means that the lightsource inside is broken, or the little power- supply feeding that lightsource, the supply is most likely. The supply might be found on ebay. |