Re: LG 25UM58-P backlight works, but no picture and high pictched sound when assemble

Hi!
Thanks for everyones help, I've replaced the broken part with an AO3401, panel worked fine until I put back the shielding then the magic smoke escaped again.
I've done that twice, both times the same result.
Now I've assembled the monitor without any shielding, and since the stand mount was part of the shielding no stand so the monitor is now mounted via the VESA mounts on the wall, and works fine. The panel is held in place with the integrated clips and via some hot glue...

Re: LG 25UM58-P backlight works, but no picture and high pictched sound when assemble

I have several of these transistors: [url]https://ebay.us/JnMfTt[/url] (IRLML2502). Maybe I shall try these to see if they are suitable replacements?Or shall I order the exact type that you 've suggested?Re: LG 25UM58-P backlight works, but...e that you 've

Re: LG 25UM58-P backlight works, but no picture and high pictched sound when assemble

Vdd to ground resistance is 1.02K
If I turn on the monitor on VDD I get 0.11V
I am worried about the looks of that screw-hole, I suspect layers may be touching when the monitor is assembled.
About the transistor, I suspect the markings are N[maybe 7 or Z]H[maybe 7 or Z]A
Q6's markings are WYC4

Re: LG 25UM58-P backlight works, but no picture and high pictched sound when assemble

Can anyone help?

So I bought my monitor used (I know it wasn't a good idea), and the day I bought it after some movement the screen went black(only backlight) and I heard a high-pitched noise, but I found out if I grip the bottom-right corner tight it fixes itself (I know this isn't a good sign). I used it for around a half year it showed this problem maybe three or four times always fixed it with the said method. Around a month ago it showed vertical lines repeated and slightly washed-out colors. I tried to fix it with the grip method, but the picture went out and haven't shown anything since then. When I disassembled...

Re: Dell n5010 dead tps51116 not working

Hi!
Tried to correct the soldering issue hope it is better now!
The EN resitor is missing if I iuhnderstand correctly what shall I put there?...

Re: Dell n5010 dead tps51116 not working

5.5V and 3.3V present for sure, comnputer sometimes turns on, sometimes not, but when turns on VCORE is also present.I made some pictures with my phone( sorry for crappy quality also included a brightened image and also incrased contrast)Are these solder joints looking good?And some compents are missing from there.Shall they be there?according to the schematics they are for the enable signals. This was my first QFN chip i i I cooked 2 of them, almost ripped a pad, but restored(3 GND) also 0.75V missing.GPU and CPU heats up when computer turns...

Hello everyone!When I plugged my laptop to a the scren sowed some weird artifacts, then shut off.I powered it on again, then shut off again.DOne this a few times then the laptop wouldn't turn onand the charger light come off, so the laptop was shorted.Few months later checked at a friend who got a lab psu the TPS51116 ic was shorted, and also the two fets belonging to it.Foast forward to now I got a hot air rework station(858D kind) replaced the IC and the FETS but still no 1.5V_SUS and the laptop beeps seven.Also there was a horted tanutlum cap on the line, and something else ws shored also but...

Re: New Members - please post your introductions here

Helllo 18 year old stundent whose laptop is broken then found this forum.Tried to repair it half success acocmplished