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Re: Trouble with laptop display

Cross-posted to 3 groups.

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On 2025-10-22 13:04, Jasen Betts wrote:
> On 2025-07-16, Carlos E.R. <robin_listas@es.invalid> wrote:
>> Hi,
>>
>> I have an old Compaq Presario CQ61-330SS laptop, which I think I bought
>> around 2010. Battery died, I replaced it, also died eventually.
>> Currently I only use it to watch movies (it has very good internal
>> speakers), when exercising on an static bike.
>>
>> <https://icecat.es/es/p/hp/vk845ea/compaq+presario-laptops-0884962367797-cq61-330ss-3589205.html>
>>
>> Some months ago, the display went black on boot, but closing the lid and
>> opening it again made it work. Today it is impossible, it goes dark
>> instants after opening the lid. I have repeated the operation dozens of
>> times. It happens before booting and keeps doing it after booting. It
>> makes the thing totally unusable.
> 
> Is the display blank (bad LCD, or LCD wiring) or is the graphics visible if you
> illuminate the screen strongly nearby (bad backlight, backlight
> wiring, or backlight driver)

Please, you should read the entire thread, as this was asked and 
answered back in July, and I decided not to attempt a repair. When 
needed, I connected an external VGA display.

It is the backlight which fails. Indeed, illuminating with a strong 
light makes the text and images visible.

-- 
Cheers, Carlos.
ES🇪🇸, EU🇪🇺;

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Re: Trouble with laptop display Jasen Betts <usenet@revmaps.no-ip.org> - 2025-10-22 11:04 +0000
  Re: Trouble with laptop display "Carlos E.R." <robin_listas@es.invalid> - 2025-10-22 13:44 +0200
  Re: Trouble with laptop display The Natural Philosopher <tnp@invalid.invalid> - 2025-10-22 12:52 +0100

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