From Newsgroup: comp.os.linux.misc

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)
--
Jasen.
🇺🇦 Слава Україні
--- Synchronet 3.21a-Linux NewsLink 1.2

From Newsgroup: comp.os.linux.misc

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🇪🇺;
--- Synchronet 3.21a-Linux NewsLink 1.2

From Newsgroup: comp.os.linux.misc

On 22/10/2025 12:04, 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)

Usually it's a failure of the backlighting
--
"Socialist governments traditionally do make a financial mess. They
always run out of other people's money. It's quite a characteristic of them"

Margaret Thatcher

--- Synchronet 3.21a-Linux NewsLink 1.2