Ted wrote:
> On Aug 8, 3:51 pm, "BillW50" <Bill...@aol.kom> wrote:
>> Innews:8525a6fa-5425-4193-8929-054101243537@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.