[SIZE=14px][FONT=Calibri]Hi[/FONT][/SIZE] [ATTACH=JSON]{"data-align":"none","data-size":"small","data-attachmentid":3255905}[/ATTACH] [ATTACH=JSON]{"data-align":"none","data-size":"small","data-attachmentid":3255906}[/ATTACH]
[SIZE=14px][FONT=Calibri]I am trying to repair an old Sony j30 PSU, which I have no information about or schematics.[/FONT]
[FONT=Calibri]I am not an expert in electronics, but I would appreciate some help.[/FONT]
[FONT=Calibri]I recapped the whole PSU and...
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by CapLeaker
04-19-2024, 11:39 AM
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04-19-2024, 11:45 AM
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"I heard that a blue LED has different voltage values than green and red ones. Green and red ones are easily replaceable, but how do I do that with the blue one?"
"I have to use the blue one, because green means fully charged and blue means charging."
[ATTACH=JSON]{"data-align":"none","data-size":"full","title":"20240415_172809.jpg","data-attachmentid":3253246}[/ATTACH]...04-15-2024, 09:59 AM -
Hope this is the right place, someone can help me.
My laptop started having a really strange problem...
When I turn it on the fans start working at a crazy rate and with random breaks...
They can work for say 10 seconds and stop for 2 seconds and then turn on again for 5 etc...
And it's from 0 to 100%. I tried to install AIDA and did the processor chip test and the graphics did not exceed 70 degrees and the fans were not even close to working at the power they work randomly.
The model of the computer:
Xiaomi Notebook Pro X 15 OLED (A30)
hardware:...Today, 09:55 AM -
have been looking at earth leakage clamp meters and its like a minefield out there . i wondered if anyone here had bought one that actually works properly ?...04-17-2024, 01:31 PM
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Hi, I'm working on an ASUS ROG G14, GA410QEC board. U1203 (TPS25810 but the schematic has it as SN1507044RVCR1) has shorted the +5VSUS rail. Is it safe to power up to test and subsequently use the laptop until I receive the replacement part?04-01-2024, 03:26 PM
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hello I have an acer nitro 5 model N20C2 (motherboard FH51M LA-J871P rev 1B) which does not charge, it turns on perfectly but when I plug in the battery, we see the charging indicator and the charged battery logo but it turns off a few seconds later, and there is no way to turn it back on, you must then disconnect the battery and the charger. If I turn it on without the battery it works fine.
I changed BQ24781 but the result is the same, I put after BQ24800 the same, I then checked all the resistors and mosfets, everything is ok, I bought a new new battery but the result is the same...04-20-2024, 07:58 AM -
Version Bios: 2101
It working back up bios and me...Today, 03:25 AM -
For those in 220V locales, anyone power their SMPS with DC, and how high of a voltage is okay?
What kind of PSU?
I suspect that 240V * sqrt(2) = 340V DC is probably fine because that would be about how much the the primary rectifier ends up with peak voltage. Just wondering, other than input capacitor voltages, can one go up above this 340V without damage? Will that input capacitor be the upper bound?
Wondering if exactly that, can I feed near 400VDC into bona fide specced at 220V SMPS without damage?
Currently have a 120/220V switchable SMPS I want to see if I...Yesterday, 08:03 PM -
IH all, Got this vizio tv P65-E1 from FB marketplace hoping to be able to reflow mainboard as selerrstated that it was diagnosed with bad mainboard. However they must have tried to repair tv by putting another board in and they put P55 board in .
Tv starts and responds to remote but screen does not look right , It looks like low resolution with some image ghosting. Now not having original board I dont know what to order ? Any advice how to figure out what exact board fits this tv ?
And another question Would it be possible to adopt this board to this tiv by chagning eeprom or tcon...Today, 08:25 AM -
Hello.
I have 29inch LG CRT TV,And Yesterday,Whenever I connect AC power cord to power outlet without switch on, I heard a sound like white noise, And When I switched on this CRT TV, It sometime displayed correctly But usually It won't last more than 20 minute and The screen begin to dark and It finally did not display at all for hours..
Today,I dismantled its plastic case and discharged the biggest capacitor(400wv 470uf) which still holds 250 voltage,and I finally detached PCB from cathode-ray tube.
I measured ESR value of most of caps in PCB with MESR-100 and I found that KME(25v...04-17-2024, 07:11 AM
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IH all, Got this vizio tv P65-E1 from FB marketplace hoping to be able to reflow mainboard as selerrstated that it was diagnosed with bad mainboard. However they must have tried to repair tv by putting another board in and they put P55 board in .
Tv starts and responds to remote but screen does not look right , It looks like low resolution with some image ghosting. Now not having original board I dont know what to order ? Any advice how to figure out what exact board fits this tv ?
And another question Would it be possible to adopt this board to this tiv by chagning eeprom or tcon...Today, 08:25 AM -
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Hi people, i have an acer nitro 5 with motherboard model gh51m la-k861p , it came with the resistor pr103 blow up, i repaced that resistor, i check the coils plb2, pl301, pl501 and has no short to ground, i conect the charger and it doesnt power at all, i check pqb3 on pin 5 to 8 and its 19v, pin 1 to 4 its 0
so i repaced, pqb3, pqb4, and makes no change, still no acdrv, i replaced bq24781 and makes no change, still no acdrv, if someone can help pls, thanks, this are the schematic and boardview
[SIZE=14px][B][MOD EDIT] LINK to schematic & boardview[/B][/SIZE] -> [url...Yesterday, 11:30 AM -
So I'm having difficulty finding line drawings for this motherboard NM-C53. My charging port was broken. So I replaced it with a terrible solder job. Problem is pin 3 on the drawing I saw on here has it listed as adapter-id. Now I checked my other pins and I have continuity (resistance check from power to ground). Pin 3 shows nothing. Now I boot the computer and it says to use a power adapter with the proper wattage and won't charge. I have read that pin 3 is usually tied to a resistor that identifies the charging power thus disabled the ability to charge if it fails the check. I look at my board...Yesterday, 07:27 AM
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Version Bios: 2101
It working back up bios and me...Today, 03:25 AM -
Hey friends.
I bought a used Microsoft Surface Pro 6 . Good condition, only downside is that the xHCI complient USB Host Controller gives code 10.
I have tried everything that seemed immediately obvious to solve this, like driver updates, roll back OS versions, run all MS's diagnostics tools etc.
The kicker: It works in UEFI just fine.
It works in Grub2, too.
I can even boot off a USB recovery drive thumbstick. However, after it has loaded the image and starts the OSs drivers, it fails.
(This is actually how I got Windows back on it, by putting...Today, 07:41 AM -
halOoh Guys, good day.. need ur help here...^_~ anyone who got a working or clean bios bin file for
DELL Inspiron 14 7000 EDW40 LA-H451P REV 1_0
thank u n advance ^_~
service tag: 8SPMXY2
SERIAL: 19150372442...Today, 03:05 AM -
11254-3 charging problem
off condition enable to charge . when i turn on unable to charge batter plz help...Today, 04:47 AM -
Hi.
My Hp G6 laptop died while using it.
I opened it up and used a thermal camera on it to see if anything was getting hot. The RT9513 chip (EQ ED B1Y) which is supposedly a battery charger ic was getting hot. I ordered a new one and replaced it but its still red hot. Where should I look next?04-20-2024, 10:02 AM -
Hello everyone,I need to unlock my bios password.Please help me.
Model Aspire 3 A317-53G-324G
S/N NXADBEU0041441A2693400...Today, 04:10 AM