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Forum: Troubleshooting Laptops, Tablets, and Mobile Devices

12-02-2021, 08:09 AM

Replies: 1

Lenovo 11e problems (any sata hdds are not recognized, sleep battery drain)

Views: 207

Posted By clabr

Lenovo 11e problems (any sata hdds are not recognized, sleep battery drain)

Need help to solve some problems with this laptop.

After working in bed with it one night and heating up too much (probably the cause of this problems) the sata HDD OS windows froze
After...

Forum: Schematic Requests ONLY!

11-29-2021, 03:29 PM

Replies: 14

Yoga 11e Quanta LI5 DA0LI5MB6H0 Rev H BoardView

Views: 2,496

Posted By clabr

Re: Yoga 11e (DA0LI5MB6H0 rev: h) schematic request.

Take a look here
https://www.badcaps.net/forum/showthread.php?p=1087993
I just posted it

Forum: Schematic Requests ONLY!

11-29-2021, 03:28 PM

Replies: 3

Schematic & Boardview for Lenovo Yoga 11e motherboard DA0LI5MB6H0 Quanta LI5

Views: 755

Posted By clabr

Schematic & Boardview for Lenovo Yoga 11e motherboard DA0LI5MB6H0 Quanta LI5

Lenovo Yoga 11e
motherboard DA0LI5MB6H0 Quanta LI5

Schematic & Boardview

Forum: Troubleshooting TVs and Video Sources

06-21-2020, 02:10 PM

Replies: 21

LG 42LW5500 strange problem

Views: 2,043

Posted By clabr

Re: LG 42LW5500 strange problem

Thanks for the answer.
Ok, I will look but I am also looking from answers in here to understand what is better and normal
On youtube I could posibly find maybe untrue unreal even stupid things.
...

Forum: Troubleshooting TVs and Video Sources

06-21-2020, 06:10 AM

Replies: 21

LG 42LW5500 strange problem

Views: 2,043

Posted By clabr

Re: LG 42LW5500 strange problem

The ebay seller (store) was kind enough to refund the money and leave me the mainboard as well.

Now the question is what should I do in order to try and repair this problem (if it could be...

Forum: Troubleshooting TVs and Video Sources

06-16-2020, 10:39 AM

Replies: 21

LG 42LW5500 strange problem

Views: 2,043

Posted By clabr

Re: LG 42LW5500 strange problem

I did the panel test like it's specified in this ebook http://www.lcdrepairguide.com/screen-repair/228/LG-TCON.pdf
jumped 12V and 3.3V on pin 44 (CN1 - lvds connector with 51pins)
red green blue...

Forum: Troubleshooting TVs and Video Sources

06-16-2020, 06:37 AM

Replies: 21

LG 42LW5500 strange problem

Views: 2,043

Posted By clabr

Re: LG 42LW5500 strange problem

Yes, I tried that today.

The voltage is constant when the panel is disconnected from tcon.

When connected, it's interesting that it varies, it gets higher exactly when the picture on screen is...

Forum: Troubleshooting TVs and Video Sources

06-15-2020, 05:23 PM

Replies: 21

LG 42LW5500 strange problem

Views: 2,043

Posted By clabr

Re: LG 42LW5500 strange problem

Just making sure it is nothing on my side, before sending the motherboard back

I am trying to understand if this kind of problem could be anything else related other than the mainboard (panel...

Forum: Troubleshooting TVs and Video Sources

06-15-2020, 11:32 AM

Replies: 21

LG 42LW5500 strange problem

Views: 2,043

Posted By clabr

Re: LG 42LW5500 strange problem

I have found similar looking problems on youtube
here https://www.youtube.com/watch?v=04s8c11xJyY
it sais it resolved with baking mainboard in oven

and here https://youtu.be/IN2yuzmjHxw
this...

Forum: Troubleshooting TVs and Video Sources

06-15-2020, 11:09 AM

Replies: 21

LG 42LW5500 strange problem

Views: 2,043

Posted By clabr

Re: LG 42LW5500 strange problem

It is in fact a 42LW5500-ZE LG Tv (I didn't mention that exactly)

And the mainboards old and new (EAX, EBT numbers) are exactly the same.
It is how I have searched ebay for it (using those...

Forum: Troubleshooting TVs and Video Sources

06-15-2020, 05:03 AM

Replies: 21

LG 42LW5500 strange problem

Views: 2,043

Posted By clabr

Re: LG 42LW5500 strange problem

The stickers, serial numbers, etc are all exactly the same.

I know this mainboards are used in 32,42,47 maybe even 55'' inch LGs

but the ebay seller speciefed is from a 42LW5500 TV.

Tcon as...

Forum: Troubleshooting TVs and Video Sources

06-15-2020, 01:57 AM

Replies: 21

LG 42LW5500 strange problem

Views: 2,043

Posted By clabr

Re: LG 42LW5500 strange problem

Yes I did try setting to 8 bit.
it doesn't change things in better. Just a more unclear, green look
It almost made it imposible to distinguish something (and I mean when the picture is steady from...

Forum: Troubleshooting TVs and Video Sources

06-15-2020, 01:55 AM

Replies: 21

LG 42LW5500 strange problem

Views: 2,043

Posted By clabr

Re: LG 42LW5500 strange problem

Where should I try change Panel Type? In what Options?

In the first attached picture I am in Tool Options 1, In EZAdjust

I guess that is where I could change panel size, model LW LV etc, and...

Forum: Troubleshooting TVs and Video Sources

06-14-2020, 04:56 PM

Replies: 21

LG 42LW5500 strange problem

Views: 2,043

Posted By clabr

LG 42LW5500 strange problem

Hello everyone,

I have bought a replacement mainboard (used state) from ebay for a LG 42LW5500 TV.

Previous mainboard had the typical LG problem (cpu bga soldering - no video , no backlight at...

Forum: Troubleshooting TVs and Video Sources

11-22-2019, 02:45 AM

Replies: 30

Sony LD-65X850-8c vertical lines on display problem

Views: 2,399

Posted By clabr

Re: Sony LD-65X850-8c vertical lines on display problem

I am hoping those lines are in short outside of the COF on the opposite side touching by some residue left by the other COF I had removed.
But I understand it could very well be something inside the...

Forum: Troubleshooting TVs and Video Sources

11-21-2019, 10:53 AM

Replies: 30

Sony LD-65X850-8c vertical lines on display problem

Views: 2,399

Posted By clabr

Re: Sony LD-65X850-8c vertical lines on display problem

I obviously don't/didn't know much about the internals of the gate driver chips. Today I took some time to learn about their composition (shift register, level shifter, buffer).

I assumed if one...

Forum: Troubleshooting TVs and Video Sources

11-21-2019, 03:40 AM

Replies: 30

Sony LD-65X850-8c vertical lines on display problem

Views: 2,399

Posted By clabr

Re: Sony LD-65X850-8c vertical lines on display problem

Yes budwich, seems like a good explanation, one that I briefly taught of aswell.
Mainly because I have observed (I didn't mention it yet) that the opposite side COF (to the one in short) is a bit...

Forum: Troubleshooting TVs and Video Sources

11-20-2019, 04:28 PM

Replies: 30

Sony LD-65X850-8c vertical lines on display problem

Views: 2,399

Posted By clabr

Re: Sony LD-65X850-8c vertical lines on display problem

As I said, I finally decided to remove the problem COF (and all the side COFs afterward)

The display has a problem still:
A horizontal line (a pretty thin line from normal viewing distance (I...

Forum: Troubleshooting TVs and Video Sources

11-18-2019, 05:51 AM

Replies: 30

Sony LD-65X850-8c vertical lines on display problem

Views: 2,399

Posted By clabr

Re: Sony LD-65X850-8c vertical lines on display problem

Yes I know, many have done it with success.
I meant to post some of my findings changes of the display after removing one side of the COFs (brightness sharpness loss etc)
There is also a problem, a...

Forum: Troubleshooting TVs and Video Sources

11-18-2019, 03:35 AM

Replies: 30

Sony LD-65X850-8c vertical lines on display problem

Views: 2,399

Posted By clabr

Re: Sony LD-65X850-8c vertical lines on display problem

I know about the COF peal of method, and about the tape cut out method which I didn't find it feasible in my case, but that is probably because I didn't know enough about it.

I really wanted to go...

Forum: Troubleshooting TVs and Video Sources

11-14-2019, 04:42 AM

Replies: 30

Sony LD-65X850-8c vertical lines on display problem

Views: 2,399

Posted By clabr

Re: Sony LD-65X850-8c vertical lines on display problem

Yeah, I know about that (that particular link video is not relevant though).

It is the third method to deal with bad gate drivers, the tape cut method.

I didn't mention it because I don't think...

Forum: Troubleshooting TVs and Video Sources

11-14-2019, 02:03 AM

Replies: 30

Sony LD-65X850-8c vertical lines on display problem

Views: 2,399

Posted By clabr

Re: Sony LD-65X850-8c vertical lines on display problem

Hello everyone.
Sorry for the delayed answer, but I was cut up with some personal problems and the owner of the TV left the country (so he didn't need it)

As I mentioned in posts before, the...

Forum: Troubleshooting TVs and Video Sources

09-21-2019, 12:14 PM

Replies: 30

Sony LD-65X850-8c vertical lines on display problem

Views: 2,399

Posted By clabr

Re: Sony LD-65X850-8c vertical lines on display problem

I will do it soon budwich, just haven't got enough time for it right now.
I will post pictures with a better display signal and also pictures of the side COFs (all 10 of them on a side)
The side...

Forum: Troubleshooting TVs and Video Sources

09-20-2019, 08:35 AM

Replies: 30

Sony LD-65X850-8c vertical lines on display problem

Views: 2,399

Posted By clabr

Re: Sony LD-65X850-8c vertical lines on display problem

In my initial post, I did explaind how the TV reacts with those "U" flex cables disconnected (I called them 1b and 2b (as it can be seen in my 2nd attached picture))

The TV has good picture on...

Forum: Troubleshooting TVs and Video Sources

09-19-2019, 10:57 AM

Replies: 30

Sony LD-65X850-8c vertical lines on display problem

Views: 2,399

Posted By clabr

Re: Sony LD-65X850-8c vertical lines on display problem

Today I managed to take a closer look at the TV.

So... there are 10 COFs on each side of the panel (where I took off the bezels).

With the TV on (obviously), I started to press (feel) them....

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