deep000
Member
Last Activity: Yesterday, 04:00 PM
Joined: 07-18-2021
Location: MA
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Mainly for small electronics repairs and DIY projects (soldering or removing SMD components on PCBs ...)... -
Looking for a budget hot air soldering station for hobby use
Hi,
I'm looking to get on Aliexpress a hot air soldering station for [B]hobby use[/B], nothing too fancy, just something "reliable" and budget-friendly.
Any recommendations for a "good" cheap one that gets the job done?
Thanks in advanceHi,
I'm looking to get on Aliexpress a hot air soldering station for [B]hobby use[/B], nothing too fancy, just something "reliable" and budget-friendly.
Any recommendations for a "good" cheap one that gets the job done?
Thanks in advanceHi,
I'm looking to get on Aliexpress a hot air -
How did you identify it?...Leave a comment:
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It gets extremely hot.
Thanks for the reply....Leave a comment:
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Monitor: ASUS VP249H
[ATTACH=JSON]{"data-align":"none","data-size":"full","title":"image.png","data-attachmentid":3619402}[/ATTACH]Monitor: ASUS VP249H
[ATTACH=JSON]{"data-align":"none","data-size":"full","title":"image.png","data-attachmentid":3619402}[/ATTACH]...Leave a comment:
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ASUS VP249H Component identification C30cH
Can anyone help me to identify this component.
[ATTACH=JSON]{"alt":"Click image for larger version Name:\tCapture d\u2019\u00e9cran du 2025-04-20 20-02-39.png Views:\t167 Size:\t525.6 KB ID:\t3619329","data-align":"none","data-attachmentid":"3619329","data-size":"full","title":"Capture d'\u00e9cran du 2025-04-20 20-02-39.png"}[/ATTACH]
Thanks,Can anyone help me to identify this component.
[ATTACH=JSON]{"alt":"Click image for larger version Name:\tCapture... -
ah ok, that makes sense.
Thanks...Leave a comment:
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Thanks for sharing.
This will seem like a stupid question, why in the image there are 14 pins while mine has 8 pins.
And I have the impression that none of them are connected to ground.
I am a beginner in electronics, and I try to learn by repairing my broken devices.Leave a comment:
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I also need the schematic for ASUS TUF GAMING B550-PLUS (without wifi).
This will allow me to try to repair my old card and above all to learn.Leave a comment:
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NUVOTON 3949s
Hi,
Where can I find details about this component?
[ATTACH=JSON]{"alt":"Click image for larger version Name:\tnuvoton.jpg Views:\t0 Size:\t101.1 KB ID:\t3508705","data-align":"none","data-attachmentid":"3508705","data-size":"full","title":"nuvoton.jpg"}[/ATTACH]
If there is no information available, how can I check if it is defective?
Thanks.Hi,
Where can I find details about this component?
[ATTACH=JSON]{"alt":"Click... -
As you mentioned, it seems like the component is the LM1117 1.2V.
I'll go ahead and order it, and do the tests that [USER="414449"]harp[/USER] suggested.
Thank you for your help.harpAs you mentioned, it seems like the component is the LM1117 1.2V.
I'll go ahead and order it, and do the tests that [USER="414449"]harp[/USER] suggested.
ThankLeave a comment:
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Burned Voltage Regulator in Monitor – How to Identify and Repair?
My computer monitor ASUS VP249H stopped working, and smoke came out of it.
I opened it and found that a voltage regulator had burned out.
The problem is that I can't identify its reference.
I searched online for schematics or photos of similar boards that people are selling, but without success (no schematics, bad quality of the board or lack of the reference when it's a good quality 😅).
How can I find its reference, and do you think it's repairable?
Monitor: Asus VP249H
Board reference: 0171 - 2271 - 6083
Thanks
[ATTACH=JSON]{"data-alig... -
Re: TCL 55p1us turns ON with sound and black screen
The video is very good.
Do i need to test for continuity between the pins of each connector (1-1, 2-2 ...) ?...Leave a comment:
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Re: TCL 55p1us turns ON with sound and black screen
After several tests, the second half is still darker and all the screen becomes worse with time.
I did some additional voltage tests:
TCON:
- VGH 20V
PANEL:
1- L 13.7 mv
2- R 3.87 V
3- DOT_C 2.99 V
4- VDD33 3.3 V
5- CKV 1.46 V
6- STVR 11.4 mv
7- OE 3.28 V
8- STV 12.5 mv
9- SPI DCK 9.7 mv
10- SPI DI 9.8 mv
11- SPI HOLD 3.27 V
12- Spi VDD 3.30 V
...Leave a comment:
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Re: TCL 55p1us turns ON with sound and black screen
After some trials with the tape, i got the second half to work
but the image is darker than the other half.
I will try now to cover less lines.
What can i test on the panel to track down the problem ? capacitors seems good.Last edited by deep000; 07-21-2021, 05:03 PM.Leave a comment:
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Re: TCL 55p1us turns ON with sound and black screen
I didn't find any short on the capacitors (continuity only in one side).
When i add a tape to a part of the ribbon cable, half of the screen works but no image in the other one (where there is the problem).
Ref of the panel: ST5461D04-1-XL-3
thanks for your help....Last edited by deep000; 07-21-2021, 10:15 AM.Leave a comment:
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Re: TCL 55p1us turns ON with sound and black screen
Thank you for your replies !
How did you know that the problem comes from the panel and not the t-con ?
I will try to test them, i read that i must unsoldered them to do it (Flux + heat).
What worries me is how to resolder, i have 0 idea how to solder such tiny component.
Can you explain more....Leave a comment:
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TCL 55p1us turns ON with sound and black screen
Hi all,
I am a newbie, i am taking this opportunity (the breakdown of my TV) to learn electronics.
I was watching the tv, and the colors became weired, i turned off/on the screen => black screen as result (sound/backlight working).
TV: TCL 55p1us
T-CON: st5461d04-1-c-7
I did some voltage tests, here is the result:
[code]
1 - VIN 12 12V
2 - VGH between -150 mv and -0.47V (negative ??)
3 - VGL between -150mv and -0.47V (same value as VGH ??)
There is a continuity between VGH and... -
Re: New Members - please post your introductions here
Hi all,
New to electronics and i will try to repair my TV
I am glad that i found this forum.Leave a comment:
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