Recommend a decent Multimeter on the cheap

[aaronkatrini]

Hi all,

I was looking to upgrade my main multimeter (Asita MD591) with something that has more features. I'll use it mostly for board diagnostic and diy repairs. I've been eyeing out many of those multi-function ones from Aliexpress but can't seem to make my mind up. Here are the features that I'm looking after:

- Autorange
- DC volts up to 30V
- Accurate Resistance
- Diode test (Beep mode)
- Frequency up to 200MHz
- Capacitanze up to 5000uF
- as cheap as possible

Other functions are not needed but those which are needed...

[Actionkindaguy]

MSI MEG Godlike x570 motherboard - need schematic and boardview. I have accidentally plugged in the wrong usb plug into a usb3.0 connector on front panel of PC resulting in temporarily shorting out the port. (I know it was really stupid, It was dark in my room and was rushing). I shutdown the computer and now after an immediate restart I get an overcurrent error on boot up saying my PC will shut down in 15 seconds. If I let the computer sit for about 35 minutes, I then can boot the PC without getting error. What I am hoping to find out is what parts were affected by my stupidity. Anyone have any...

[Bonzas]

...

[FZG]

Hello!

I recently got an old VHS player from Panasonic and just for fun I want to try to repair this device. It is an AG-1000B portable VHS player from 1990 and it has a problem with picture quality in playback mode.

Picture in playback mode is very noisy and often loses sync but the still images are nearly perfect.

I want to know, is this something that could be solved by recapping or is the video head likely gone?

Also, what mechanism is this?

Any feedback is appreciated!...

[alltvrepairs]

Hi,

Anyone has a circuit diagram for this Samsung Power supply pls?
QP801CS shorted. Blu Cap is not cracked.


[ATTACH=JSON]{"data-align":"none","data-size":"full","title":"image.png","data-attachmentid":3265690}[/ATTACH]Hi,

Anyone has a circuit diagram for this Samsung Power supply pls?
QP801CS shorted. Blu Cap is not cracked.


[ATTACH=JSON]{"data-align":"none","data-size":"full","title":"image...

[Yehuda170]

does any one here have SCH & BV for 820-02655? I see it's available on the web

[aminsab]

bios for laptop model: Aspire one 1-132

snid: 62504891276

probleme : error: turn on but not boot even to the logo


Thank You...

[trepachka]

Hello, this Asus laptop model FA707NU-DS74 has password which prevents computer from booting past it.

S/N: R3NRCX04A476126

I extracted current BIOS from a chip XMC 25RU256CXIQ (1.8V) sitting close to the CPU heatsink.

Please, help me remove the password. Thank you....

[zwerw3]

Hello. Please help. la-g07jp rev1.0 does not turn on. The 3 and 5 volt alarm goes up for 2 seconds and goes out. I opened the 3 and 5 volt power jumpers, removed the pu302, flashed the multimcontroller with different firmware, nothing helped. I noticed that on the u4104 the output is 1.5V, this voltage goes to the combined processor. Should there be such tension there?

[Markus1741]

https://[URL]https://www.badcaps.net... and cause the...

[NootABoot]

I created a supervisor password for my laptop a while back and I forgot it. It can't be reset by resetting CMOS. Can I extract it from a BIOS dump or through another method without a bios/eeprom programmer?

[sam_sam_sam]

This is another battery testing machine that needs to be modified for the cooling fans because these are noisy but not as bad as one of the other battery testing machines that I had modified recently because of it being too noisy

The battery testing machine is going to get two temperatures controlled cooling fans like one I put in the other battery testing machine I just have to remove the temperature sensor and relocate the temperature sensor to one of the heat sinks and put one on the other heat sink so the fan speed can be controlled by temperature

[URL]https://www.ebay.com/itm/186098049856?_trkparms=amclksrc%3DITM%26aid%3D111001%26algo%3DREC.SEED%26ao%3D1%26asc%3D20211130125621%26meid%3D697803b7a1c44f989a96bd22433fa892%26pid%3D101465%26rk%3D1%26rkt%3D4%26sd%3D186098049856%26itm%3D186098049856%26pmt%3D0%26noa%3D1%26pg%3D3650466%26brand%3DUnbranded&_trksid=p3650466.c101465.m3507[/URL]...

[oleinikov_s]

[B]Zbook firefly 14 G9 Шасси (Main Board): 6050a3310001-mb-ax3 i need original bios with ME Cleared, i cant open any bios with FITC 16.1 please help.[/B]

[B]Zbook firefly 14 G9 Шасси (Main Board): 6050a3310001-mb-ax3 i need original bios with ME Cleared, i cant open any bios with FITC 16.1 please help.[/B]

[dimah77]

Please Need to unlock this BIOS
Motherboard x1403za rev 2.2
ASUS Model : X1502Z
S/N : R5N0CV10N87020D...

[trepachka]

Hello,

I have this HP 17-cn1008cy laptop with corrupted BIOS. On boot the message comes up and states that BIOS is corrupted.
Normally, I would download the bios file from HP website but for some reason their software does not run when clicked on it (winflash.exe file). So, I need your help.

S/N: 5CG1425NHD
ProdID: 552Y1UAR

BIOS file is attached. Thank you....

[goodpsusearch]

Recently I was given for free a Sony RCD-W3 with the following symptoms, CD recorder drive reads CDs without any issues (haven't tested recording function yet because I don't intend to burn CDs on that machine) but the reader drive shows disc error after some seconds of it trying to read CD. Tried both CD-Rs and commercial audio CDs with same results.

First thing to do was to clean the lens but that didn't change anything. Googling the issue revealed that this is a common issue on several Sony CD recorder machines and the culprit is SMD electrolytic caps located on the PCB bellow...

[lanlan]

laptop working but when i try to boot in usb, only black coming and stuck

[s_henya]

Hi guys,

Got this EVGA GTX750TI 2GB GPU
MB Bios is beeping when GPU is connected.
When booting with onboard GPU, MB is booting but the GTX isn't showing in windows device manager.
I would like to reprogram the bios EVGA 750Ti 2GB non-6pin 82.07.55.00.50
I searched around but couldn't fins 256kb BIOS like mine.

Anyone can please assist?...

[Mr.heinrich]

Greetings, i just decide to upgrade 8gb on board ram in my dell 5290 2 in 1, is it possible if i just swap the ram chip to 16gb or i should swap the other else like resistor or something. Please help me guys, thank you.

Just for information, my dell 5290 2 in 1 is using SAMSUNG K4E8E324EB-EGCF chip, this is 8gb chip ram.

SERVICE TAG: 160LHR2

Thank you so much.

I'm so sorry if my english isn't clearly.

[crazycavan]

polaroid TQLHD24PR004 no power
hi, my tv no longer starts like dead, no standby led

motherboard : MS36639-ZC01-01
panel : V236BJ1-P01
flash spi: GD25Q64
need usb firmware or to reprogram

[cook]

See the attached drawing of the chip I am trying to identify. I think the last character (the 'H') may actually be the manufacturer logo, but I am not sure.

This chip is part of a hand held device that detects metal. Its called a pinpointer, and is used in the metal detecting community. The chip is located on the main power rail which is from a 9 volt battery, noted in the drawing.

I tried many searches to find the part, but did not see anything that looked close. But then I have very little experience doing this and I could have easily missed something obviou...

[GraphicMan]

Hello guys
Because the unit is old (but only occasionally used) the loudness button causes some noise due to bad contact,
sprays did not work, so i decided to solder the pins that it connects on the pcb at the on (loudness on) position
i did that and it worked fine, i know from the bottom of my heart that the switch connects 2 pins and also d/c other 2 pins
on every position it have (6 pin switch), so i was curious what would happen if i clicked the switch off while the pins are soldered at on (so basiclly on and off at the same time), when i did so the sound is gone, nothing...

[CapLeaker]

Got something new. Recently I got trouble with receiving emails and syncing OneNote. Nothing else. I still can stream 24x7, VOIP, have full speed internet, but in the world cannot receive any emails nor sync OneNote. Take the computer somewhere else to a different internet location and no problems at all. Points to the router, right? NOPE! Hooked up my computer directly to the modem (which is in bridge mode) and have the same problems! Put all the network shit back together, start my VPN provider app, choose the closed VPN server to me and all the problems are gone! Is...

[fredyjbi]

Please help sir, this board does not turn on because VSYS_OUT is 9.2v, I compared it with a normal board VSYS_OUT is 10.2v, I have replaced the PQ101 and PQ102 mosfet and BQ 25700 which is known to be good, but the results are still the same, thank you

VSYS_OUT 9.2v Meter in resistance mode auto range 6M ok
NORMAL BOARD 10.2V

PQ101
PIN 2 20V
PIN 7 0.004V
PIN 6 6V
PIN 5678 0V

PQ102
PIN 567 0V
PIN 9 0.004V
PIN 234 9.2V (VSYS_OUT)

PU101 BQ25700ARSNR
1 VBUS 20V
2 ACN 20,21V
3 ACP 20,21V...

[Dancych]

Hi.

I have received for repair a DELL PRECISION 5480 on a LA-625P REV board. 1.0
I am attaching the working BIOS for this board. The BIOS does not contain the Windows key.

The region in which it is located is:
Windows Key Region : 0x011660B6 - 0x011660E7 Len 0x00000031


Other information:
- MAP Region Info :
- Image MAP Regions SPI 1 (64 Mb)
- DESCRIPTOR Region : 0x000000 - 0x00000FFF Len 0x00001000
- ME Region : 0x02121000 - 0x02B9CFFF Len 0x00A7C000
- BIOS Region : 0x00121000 - 0x02120FFF Len 0x02000000...

[cmilak34]

Hello,
I've got a SanDisk Ultra II 480 GB 2.5" SSD (SDSSDHII-480G)

Controller: Marvel 88SS9189-BLD2

Symptoms:
- the drive is completely dead, no response when connected to the computer,
- current consumption (0.01 A)
- under thermal imaging the only component that heats up is the controller,
- I checked the voltages according to the thread ([url]https://forum.hddguru.com/viewtopic.php?f=10&t=40329&view=previous[/url]) - all seem correct (typical 1, 1.8, 3 and 5 V).

Is there any chance of data recovery? I assume replacing...

[lofton]

Hello, I was updating the bios on my t470 20jn pf1q6dx5 using the soic8 clip that came with the Ch341A on the bios and pressed the clip too far back when i was taking it out and it knocked off what look like little capacitors, can this be repaired or bypassed with solder or a wire or what was originally on there, they are extremely small. I have attached two pictures, one with the capacitors on and one with them off. It took me weeks to figure out why the board wouldn't power on. I thought I had broke the bios. THe machine turns on for a second then turns off.

[ATTACH=JSON]{"data-align":"none","data-size":"custom","height":"632","title":"Broke...

[smaniak]

The laptop won't start. When plug power supply, on 19V in gives me 0,14A, without turning on the laptop.
I check it with thermal camera, and there is one resistor that is very hot, I change the resistor with new on but the result is the same.
In the attachment there is schematic of the resistor area, and schematic of the laptop.
I can't understand, why this resistor is getting so hot....

[Ishwar Khatri]

i have ecs h61 motherboard im having issues with usb port connecting disconnecting help how can i fix it...

[fixit007]

I picked up this TV that the prior owner said - just died.

Tested the fuse - burnt. A dead capacitor is visible too on the hot side (CP801). Got the replacement power board (cheaply - used). Replaced the board - the TV turned ON!

Now, about a month later (yesterday) I noticed the left side of the screen was flickering from time to time. That was already happening with the antenna input, not through HDMI.

Also, some glitchiness with a Fire stick on HDMI3 - I hit an app with quick dark screen in stick, the TV goes - no input. Then I had to choose the stick...

[dorrut]

hello, I apologize if I made a mistake by asking this question here, I have a dell xps 9310 in windows 10 does not see the wifi module, in bios wifi<none>, in Unbutu everything works normally, the network card is, killer AX500 dbs.am made bios update 3.6.0, and for the driver I tried all the available versions, now I have 1.0.0.1606, where is the problem and can it be solved??
2dfg6h

[Victor Torres]

Help. Can someone tell me what is happening? The rtx does not increase performance, it remains with a constant voltage of 0.631v. the performance is not as expected.

[ATTACH=JSON]{"data-align":"none","data-size":"full","data-tempid":"temp_336067_1714842396926_566","title":"image.png"}[/ATTACH]
[ATTACH=JSON]{"data-align":"none","data-size":"full","title":"image.png","data-attachmentid":3264988}[/ATTACH]Help. Can someone tell me...

[EazyBone]

Where do I get the software for Sony / Hisense tvs to install to emmc?

[trickartt]

Hello Badcaps!

I am trying to troubleshoot my Allen & Heath Xone:02 DJ mixer. I have had this for somewhere close to 20 years and have played music through it in one form or another pretty much every single day since I've had it, though these days it's usually from a wireless streaming receptacle (Apple Airport) more than the turntables that are also connected to it.

This week my music stopped working, and after a bit of a wild goose chase, I realised my mixer was dead. I checked the 500mA fuse in the device beside the power supply and found it was blown, so I replaced...

[angelos]

Hello Guys,

I am not familiar at all with plasma tv's but i tried my luck anyway since business is so bad. We gotta try, right?
Anyway, the original problem was a tv clicking and not starting due to a short circuit on the Z-Sustain board (on the right side from the rear).
I found two transistors shorted (30F123) and changed the gate driver ic's as well. I think they were FAN73711. I soldered for dry joint on power supply, Y-Sustain and Z-sustain. Started up the TV and the short was gone so i had an image but.....
Lots of colorful speckles on the image and also there...

[TIXOU14]

HI NE[ATTACH=JSON]{"data-align":"none","data-size":"full","title":"DSD.png","data-attachmentid":3264908}[/ATTACH]...

[Noursa]

Hello

I'am a beginner in electronics repair and i got some trouble to find what's goning on a computer. It is a lenovo yoga C940-15IRH laptop and the screen doesn't work anymore, but that work on an external one

the screen seams to be hard to unbuild properly so i want to test it by other way

how can i be sure if the signal is really send to the screen ? i did some check on screen connector on LCD1 got 19v and on MiC1 connector on the other side of the screen (dunno if it's for the screen itself or other thing) got a lot of 3.2v pin

did u got...

[MeetingIncapable]

Hello,

I am new to repairing computer electronics, so excuse any mistakes I make.

A friend of mine had a broken graphics card (MSI Radeon RX 5700 XT MECH OC) and gave it to me. It does not power on or show any signs of life.
I identified what looks like the remains of a blown capacitor at the bottom of the board (see picture).

I wanted to replace the capacitor, but I have two questions:[LIST][*]Does this repair have a chance of working? or is a blown capacitor a sign something else is wrong?[*]How do I determine the rating/value of this capacitor?...

[labello]

Hi guys my friend gives to me this thing, it works but the selector on of music is broken , I tried to do some research on Internet to change it but I didn't find anything. I hope that someone can help me to find it thanks all for the reply

[CPRMatt]

I have a PS5 in my shop that beeps when the power button is pressed but the light does not turn on and the fan doesn’t move at all. I tried replacing the power supply because it had some roach bodies in it but the rest of the device had no signs of infestation, and it does the exact same thing. Then I tried replacing the HDMI chip (MN864739) because I saw somewhere that it could be the culprit but still no change. Does anyone have any other suggestions or things I should test on the board or is it likely dead? Thanks!

[b4rdock]

hi, friends can heko unlock this [B]Vostro 13 5310[/B]

ST:4GV8MG3
have password and computrace active


regardshi, friends can heko unlock this [B]Vostro 13 5310[/B]

ST:4GV8MG3
have password and computrace active


regardshi, friends can heko unlock this [B]Vostro 13 5310[/B]

ST:4GV8MG3
have password and computrace active


regards...

[Al-Umar]

Please can someone tell me the chemical that can be apply to dissolve glue that used to hold the type C chip and SSD storage chip MacBook 2017 touchbar on the board.
Please i need a prescription of that chemical. i will be very glad if someone can help me out on that

[Franito]

I have a rx6600xt in the same situation.
The first pin of npc81022 ( powerok) has 0 v, and doesn't activate the other and gates.

I'm not sure if I can bridge with powergoods.

I don't have the schematic for this gpu sapphire, and i dont know why I don't have power ok if all coils are marking good voltages.

¿Maybe gpu core dead?
I see in a msi schematic powergood and powerok are bridged wwith a resistance, but in my gpu this place is empty....

[ZockeX]

Heya! I have a Google pixel 6 with some important data on it, and since it's the new Google SOC I'm not really sure if it's possible to solder the storage to a new board.

If anyone has or knows how to get a Boardview of the pixel 6 (not pro) that would help me immensely.

Best regards, Alexander Dorn.

[Chapita]

Hi team,

I bought a lenovo thinkbook 14-iil with a core i 5 processor, Radeon graphics chip, board number: DALVACMB8DO - REV D from an auction. It does not have a bios chip and my guess is that someone disoldered it, so I am planning to buy a new replacement bios chip but I do not know how to reprogram the chip, can someone assist please

[Caspar Love]

Was wondering if anyone would be able to help with something for a friend. They're looking for a circut diagram for the power supply of a motherboard for a Acer Swift Go 14 laptop, model number N23C6 laptop. I've attached some images of the board and was hoping if anyone could direct me to something that would help?

Thanks in advance

[claws77]

please provide schematics and board files
google search for part number shows some other laptop versions sf314-XX also use this daughter board.
part number 448.0E706.0011

[Issa malik]

Hey everyone, I've had a dead hp g62-b55se for a while that wasn't fixed and i would like to take a look at it... board: 615382-001

[rheyntau]

help pls..need schem and boardview for this laptop
HP BOARD # LINDEN-6050A3147201-MB-A01 (A1) ..

thank you in advance...
(sorry for my bad english)

[jrutla2]

Hello BadCaps Forum! I'm new to the group and hope you guys can help me with something. I have a 2017 Apple imac A1419 board # 820-00609-A that i'm trying to identify a capacitor failure on. The capacitor is a tantalum 68 C79. See pic attached. I've tried to figure this out using the web and unfortunately can't find the information. Can someone tell me what the Capacitance value, voltage, etc is for these 68 C79 caps are? Where could i pick up a replacement? Thanks in advance!!...

[smaniak]

Hi I have a touch screen monitor. It work fine for many years, but now It shows its age!
When I turn on the monitor, white lines appear on the display. They jump for a few seconds and then the display goes off.
Can you give me some pointers on where to start with the diagnostics.
There was a trail of dried light brown liquid on the board that the display connects to, as if a capacitor had leaked, but I couldn't find one. I cleaned the circuit board and resoldered the legs where this liquid was, but to no avail....

[Felipe_Serra_83]

As the title says. For programming with [B]CH341a MiniProgrammer[/B]

Thanks all!As the title says. For programming with [B]CH341a MiniProgrammer[/B]

Thanks all!As the title says. For programming with [B]CH341a MiniProgrammer[/B]

Thanks all!

[Sergio Kub]

Hi there,
I have a Mac on the bench that wouldn't turn on, it didn't have PPBUS_G3H voltage.
I replaced the IC U7000, ISL6259 and the green light came on, the cooler turned on and showed the video, but I noticed that PPBUS_G3H is at 9.45V and the U7000 is heating up a lot.
I took resistance measurements for the earth and did not find a short circuit.
I measured the resistors connected to the U7000 and found no different value.
I searched the Forum and didn't find anything like this.
Can anyone give me any advice about this problem?
Thanks in advance.

[the Benninger]

Dear friends of the community, I hope you can help me in this case, this notebook came to me with the fault that does not turn on, when the source is connected it indicates that it is charging, when you press Power 2 or 3 seconds pass, when it only steps once on the Power LED, that's all the fans do not turn on it does nothing more than charge the battery.

I've already tried a BIOS from another post on the same forum and unfortunately it keeps doing the exact same thing here's the data:

avell A62 LIV
RTX2060 (6Gb)
SN: AVNB2051108
MoBoSn: GK7MR0R11T02203710291...

[Bloopeta]

Samsung UE55JU6800K with no image on screen.

I have had this TV many years without fault, however aprox 6 months ago I fitted a new set of backlights as some of the lens caps had fallen off.

Was working fine, until 3 days ago, when watching TV the screen just went blank (still illuminated)
I turned the TV off and left it around 12 hours, and when turned it on again it seemed to work perfectly again. After around 45 mins the screen went blank again.
Left it off overnight and turned it on, and the Smart TV logo came on as normal, then screen went blank.
...

[spleenharvester]

I've had this [URL="https://www.panasonic.com/global/energy/products/eneloop/en/lineup/charger-bq-cc63.html"]Eneloop charger [/URL]from new, and it works fine but has always made a really irritating ticking sound roughly once per second when more than one battery was inserted. I found the noise to be coming from the OB5222AG PWM DIP-8 IC. I tried replacing it with an identical part - the problem persists but rather than a ticking, it now sounds like a squeal. The problem is there are no spec sheets for this IC [I]anywhere[/I] and no information besides it being a PWM IC, so I have no...

[lwc198]

I have tried different ways to do it myself but failing

Its a Elite DragonFly

SN: 5CG1120KDW
Product number
6FW22AV

Any help would be appreciated...

[dalish]

Hello everyone. I am looking for MSI Raider GE78HX 13VH-051UK board schematics. Does abybody have it?

Many Thanks