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bl4ck replied to Samsung LT24C300EW BN44-00505A (PD23A0Q) Won't Turn On (No Standby Light)

in Troubleshooting TVs and Video Sources

03-17-2022, 06:12 AM
Re: Samsung LT24C300EW BN44-00505A (PD23A0Q) Won't Turn On (No Standby Light)

In the end it was easier to do it than to say it, and it also came out just like the factory.. ok I'm not so sure about that last thing but it worked great giving me continuity from the capacitor pin to the entire pad with the tester.

After that I quickly did the backlight test (by giving power and leaving the main board unlinked) that this time powered on, and secondly I checked the voltage which gave me a stable 5v and 12v.
So when finally I plugged everything together, the monitor...

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bl4ck replied to Samsung LT24C300EW BN44-00505A (PD23A0Q) Won't Turn On (No Standby Light)

in Troubleshooting TVs and Video Sources

03-15-2022, 03:18 AM
Re: Samsung LT24C300EW BN44-00505A (PD23A0Q) Won't Turn On (No Standby Light)

Thank you very much for the detailed reply so I haven't to do many question, but excuse me just a little one, about the wire ☺️ It does makes difference if I use one previously cutted from a vcc/gnd of an old general usb cable or if I use a wire from an ac plug?
And one last thing, about where to solder, for me would much easier to link and solder it directly to the solder point (under my red arrow) instead of scraping the green paint, is this last way (scrap paint pad) better in terms...

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bl4ck replied to Samsung LT24C300EW BN44-00505A (PD23A0Q) Won't Turn On (No Standby Light)

in Troubleshooting TVs and Video Sources

03-14-2022, 12:52 PM
Re: Samsung LT24C300EW BN44-00505A (PD23A0Q) Won't Turn On (No Standby Light)

Here you can see it better (in attachment)...

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bl4ck replied to Samsung LT24C300EW BN44-00505A (PD23A0Q) Won't Turn On (No Standby Light)

in Troubleshooting TVs and Video Sources

03-14-2022, 12:39 PM
Re: Samsung LT24C300EW BN44-00505A (PD23A0Q) Won't Turn On (No Standby Light)

Today I've finally got some time and I've done what you were asking me guys. So I've desoldered one side and I've found that one of those 2 was a short circuit. In meantime, I also received the replacement of them and a new capacitor. So I've replaced the single shorted diode and the capacitor. All gone fine apart ONE single issue: when I finished soldering the capacitor and I wanted to cut the exceeded length by mistake I took out of its place a side from the PCB as you can see from the...

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bl4ck replied to Samsung LT24C300EW BN44-00505A (PD23A0Q) Won't Turn On (No Standby Light)

in Troubleshooting TVs and Video Sources

03-08-2022, 04:35 PM
Re: Samsung LT24C300EW BN44-00505A (PD23A0Q) Won't Turn On (No Standby Light)

Please l, as I can't find exactly those numbers, can you circle them on the picture posted on my first post? Thank you!...

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bl4ck replied to Samsung LT24C300EW BN44-00505A (PD23A0Q) Won't Turn On (No Standby Light)

in Troubleshooting TVs and Video Sources

03-08-2022, 04:20 PM
Re: Samsung LT24C300EW BN44-00505A (PD23A0Q) Won't Turn On (No Standby Light)

You're right, but I did that voltage too just to make some other test before to order some component, wait days and later discover that I've to order and wait others days till they arrive.. anyway as I said i have some difficulty to read some type of components and can't find the exact schematic file, if anyone have it would be great...

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Last edited by bl4ck; 03-08-2022, 04:25 PM.
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bl4ck replied to Samsung LT24C300EW BN44-00505A (PD23A0Q) Won't Turn On (No Standby Light)

in Troubleshooting TVs and Video Sources

03-08-2022, 03:30 PM
Re: Samsung LT24C300EW BN44-00505A (PD23A0Q) Won't Turn On (No Standby Light)

Yes, as i wrote in my first post, TWO of them resulted short circuit, I've circled them in the picture in that attachment.
Now I wanted to order them, along the capacitor but it's not easy to read the type are they and I want to avoid ordering the wrong one..
So has anyone the DIAGRAM of this exact board? ...

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bl4ck replied to Samsung LT24C300EW BN44-00505A (PD23A0Q) Won't Turn On (No Standby Light)

in Troubleshooting TVs and Video Sources

03-08-2022, 12:08 PM
Re: Samsung LT24C300EW BN44-00505A (PD23A0Q) Won't Turn On (No Standby Light)

yeah, I'll desolder them for sure.
Today I tried to measure the voltage of 5v and 13v to the Mainboard but instead of null or a fixed value I get random numbers.. Is that mean there's also something else not working properly? or it's just the consequences of the bad capacitor?

Btw someone has found the diagram of this PSU? cause can't find this exact model

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bl4ck started a topic Samsung LT24C300EW BN44-00505A (PD23A0Q) Won't Turn On (No Standby Light)

in Troubleshooting TVs and Video Sources

03-07-2022, 04:38 PM
Samsung LT24C300EW BN44-00505A (PD23A0Q) Won't Turn On (No Standby Light)

Hi there, after checking other topics without solution to my issue I decided to open this thread asking for your kind help.
As I wrote in the title, my Samsung monitor silently stopped working by turning totally off while I was using it with my pc.

Fortunately, even I'm still a newbie in electronics, time ago I purchased a multimeter and so I've dissembled the monitor and got out the PSU:
[url]http://puu.sh/INodf/f2fe430b5c.jpg[/url]

What I have tested/checked so far:
fuse is fine, with cable to main disconnected the LED's doesn't come...

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bl4ck replied to New Members - please post your introductions here

in Announcements & Related News

03-07-2022, 10:02 AM
Re: New Members - please post your introductions here

Hi there, newby here, trying to find a solution to fix my monitor, hope I can achieve it and at same time share my info with other folks!

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