Hi all guys, I have an HP dag7hamb8e0 Rev E laptop, which remains with a black display and absorbs only 420mA, I have all the voltages, and in my opinion it should be a Bios problem but I tried to change it but nothing, it mounts a ryzen processor 7 and dedicated video card. Do you have any advice?
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Re: Hp dag7hamb8e0 Rev E black screen
If you remove all RAM sticks, does the unit POST with a beep or LED code to denote that the RAM is missing ? -
Re: Hp dag7hamb8e0 Rev E black screen
Hi, if I remove the ram I don't have any beeps or status change leds, nothing happens. I have the 1.2V present on the coil that generates the voltage for the ram. is very strange...Comment
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Re: Hp dag7hamb8e0 Rev E black screen
hello guys i continued to test with other bios but i always have the same problem... do you have any idea?Comment
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Re: Hp dag7hamb8e0 Rev E black screen
A ryzen7 with dedicated gpu will take more then 1A before stabilising at around 400-600mA. So some rail is very likely missing.Comment
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Hello,
YouTube video of the problem encountered: https://youtube.com/shorts/q7TLNv36LUo
I am a pro and I have a problem that I have never seen despite my 7.5 years of experience on my own and my thousands of repairs, on a customer's Dell G3 15 3500.
On this PC I have already changed the complete palmrest because the keyboard was no longer working properly.
I also changed the screen because the PC fell and the screen was broken.
I changed the battery with a new and original battery.
I also had corrosion/oxidation on the... -
Problem
This is an LG edge LED lit LCD Display. The LEDs are on the bottom edge of the display. There are 2 bars (left and right) Each bar has many LEDs and a 6 pin connector. Each pin drive several LEDs thus is the highest current flow / heat junction. The weak lead free solder gradually fails with thermal expansion/contraction cycling and increases resistance. PSU will compensate up to a point, then when the current is too high, PSU just shut down the backlight causing a dark display. I have even seen one which the connector just fell off as solder points became completely detached.... -
Hello everyone !
My name is Chris, I am a 30 years old embedded software developer working in the automotive industry. I am really passionate about learning new skills and repairing/crafting stuff. I came around this forum last week with the goal of repairing my faulty gaming laptop, indeed, I was video editing on it when suddenly a black screen popped and never disappeared
I bought some stuff to try to repair it and learn as many things as possible about computer repairs but nothing worked so far. When the black screen appeared, my legion 5 pro was connected to my external monitor...
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Hi everyone,
I have this strange behaviour with Acer Aspire E5-574-52RH, i5 6200U, intel graphics, DA0ZRWMB6G0 Rev G, model ZRW.
Laptop came in for a SSD upgrade, took everything apart to install the SSD.
Everything started after modifying BIOS settings to boot UEFI instead of Legacy.
Laptop works fine, i installed windows 10 and drivers/updates, everything works ok(when it works)
The black screen problem is random, maybe 5 out 10 times, laptop remains with the black screen, no image
Symptoms are:
- random black screen after displaying Acer logo... -
Hello, I'm working on a new deskmod pc project and have a problem with my monitor, an AOC U34G3XM, well, I may have bricked it.
The monitor was dismanteled and the separate parts parts integrated in the desk. the screen panel alone is on the upper part, and main board/video board + power board on the back of the desk (not enough place on the cover to fit it)
At first everything was working smoothly, then I decided to change the connexion between the video board and the screen for a longer one. Still working fine
During another reassembly, I made a mistake, and...
Comment