Behind the mechanical keyboard is a sheet of frosted plastic which embedded within it are a collection of tiny LED’s which hopefully illuminate the sheet evenly that then passes the light outwards thru holes in the mechanical keyboard into the discrete key and the letter or symbols are lit.

So … a liquid spill can affect this sheet with a deposit of material which light is prevented from exiting outwards. It’s also possible one or more LED’s have failed as well.

So to gain access to the sheet one needs to remove the logic board as we don’t have a guide for you system you’ll need to follow as best as you can this guide MacBook Pro 13" Touch Bar 2019 Logic board Replacement there are differences but it’s very close to the same process.

Now looking at the upper case we see a sizable black sheet covering the keyboard area, carefully unglue the edge and the keyboard cable which passes through it, you should then be able to lift it out this assembly this is the backlight unit. If you just had a spill then cleaning the other side should remove what is blocking of the light, otherwise you’ll need to replace it.

This is where things get costly! As Apple doesn’t offer the sheet as a replaceable SKU. You might find it offered as a used part where someone has parted out a system, otherwise it’s a new upper case assembly! MacBook Pro 13" (A2289, A2338, 2020) Upper Case Assembly

Here’s a better image on the cable end

How to format iphone6s with iCloud

@plushar123 since this "by holding my finger there it fixes it" removes those lines it stands to reason that you will need either a new cable or a new connector. Check the contacts to make sure that none of them is bend etc. Clean the cable end contacts with something like a hard pencil eraser or even some scrub pad.

We might get a better idea if you post some pictures of the cable ends as well as the actual connector. Looks like the LCD and touch controller cable are one. Check the Lenovo X1 Tablet Gen3 Hardware Maintenance Manual page 70. It is definitely easier to replace the cable then the connector. I would opt for that.

Adding images to an existing question

@plushar123 something looks weird on the cable. Could just be my old eyes. Check the area marked and/or post a close-up image.

So I bought a lenovo tablet for dirt cheap and I'm trying to fix it. I think it's from either the cable or the connector on the lcd screen. Both cable and connector look fine. I've opened the device and apply pressure where connector and cable meet and by holding my finger there it fixes it. I have cleaned both connector and the cable with isopropyl alcohol and it's still the same. The line are mostly red sometimes green and cover the whole screen. Touchscreen still works fine and so are the speakers. And this happens sometimes. The lcd flickering usually happens when my tablet is being moved.

My LVAC 200 wont stay on for more than a few seconds. I have only had it for about a month.

Hello everyone, i'm new to the forum, and i was thinking about certain things, but first let me tell you a little about myself.

I'm 25, currently finishing my EE studies and i love electronics. Apart from designing a few PCBs and fixing a few minor electronic devices, coupled with some soldering skills, i was wandering about a side hustle. Looking at broken electronics including gaming consoles, tvs, phones, guitar amps and other, i wondered is there a way to earn money buying those broken things, repairing them and then reselling them?

I know that i have to find a niche that would suit me well, but i'm struggling to find answers about what niche is not too hard to get into and that can earn some side hustle money?

Sorry if this question is out of place or if it's not suitable for this kind of forum, i'm a bit on my own in this journey. Thank you in advance!

My phone fell since then and I have only had problems with network and range. Some places not much and sometimes not at all, someone can help me where the problem may be so that I can solve it

It seems like dropping your phone may have caused issues with your network connectivity. Here's a brief guide:

1. Check for physical damage:
   • Dropping your phone could have damaged its internal components, including the antenna or network receiver.
   • Inspect the phone for any visible damage, such as cracks or dents.
2. Restart your phone:
   • Sometimes, a simple restart can resolve temporary network issues.
   • Power off your phone, wait a few seconds, then power it back on to see if the network connectivity improves.
3. Reset network settings:
   • If restarting doesn't help, try resetting your phone's network settings.
   • This will remove saved Wi-Fi networks, Bluetooth connections, and cellular settings, so you'll need to re-enter them.
   • Look for "Reset Network Settings" in your phone's settings menu.
4. Update software:
   • Ensure your phone's operating system is up to date.
   • Manufacturers often release software updates to fix bugs and improve performance, including network connectivity.

By following these steps, you can troubleshoot and potentially resolve the network connectivity issues caused by dropping your phone.