Hello,
im actually trying to save a d1500 delay from yamaha. I found the service manual but schematic is missing and BOM list is a bit unclear as components listed have no reference linked to the pcbs... In my case, one zener diode was broken (114 code on the pcb in attached file) and couldn't be repaired : it was a zener type package. In the BOM list i found 3 reference on this board : 1S555 (can be replaced by 1N4148), RD4.7EB2 (approx 5v rectifier), RD7.5EB3 (approx 7v rectifier)...
Actually the cathode goes to VCC of sram M5M5118P, without this diode missing, i have...
No content found
Please log in to your account to view your subscribed posts.
| Directory | Topics | Posts | Last Post | |||
|---|---|---|---|---|---|---|
| Badcaps Capacitor & Electronics Repair Forum | ||||||
|
Frequently Asked Questions (No Posting)
All new members, PLEASE READ HERE FIRST! Posting only allowed by established members.
Topics: 45
Posts: 733
|
45 | 733 |
|
|||
|
Announcements & Related News
Site announcements, capacitor-related news, and anything relavant you might think of... Got News? POST IT!!
Topics: 234
Posts: 41,660
|
234 | 41,660 |
|
|||
| Document & Software Archive | ||||||
|
Common Parts Library - Datasheets
Share or download datasheets or application notes for electronic components and other parts. Contribute your knowledge or ask questions. Before using please read our Terms of Service.
Topics: 1
Posts: 3
Last Post:
ncp81208 datasheet
|
1 | 3 |
|
|||
| General Topics | ||||||
|
General Capacitor Questions & Issues
Questions and answers for identifying whether your device has bad capacitors. Also post general capacitor-related questions and issues here.
Topics: 3,183
Posts: 32,673
|
3,183 | 32,673 |
|
|||
|
General Computer & Tech Discussion
Have just a general computer question, post it here. This can be anything from an OS issue, hardware issue not related to capacitors, upgrade question, or whatever basic tech-related issue is on your mind.... This is also a good place to share your tech projects!
Topics: 4,493
Posts: 74,808
|
4,493 | 74,808 | ||||
| Troubleshooting Hardware & Devices and Electronics Theory | ||||||
|
General Electronics Technical Discussion
If you have a general question concerning basic electronics theory or component function & usage, here's where it goes.
Topics: 3,962
Posts: 44,277
|
3,962 | 44,277 | ||||
|
Troubleshooting Desktop Motherboards, Graphics Cards, and PC Peripherals
Technical discussions covering any type of desktop motherboard, video/graphics card, controller card, or whatever other desktop peripheral you need help with. Any and all brands and models welcome. When starting a new thread, please put the make AND model of your device in the thread title. Also be VERY descriptive of your issue, that way you'll get the best answer possible!
Topics: 6,789
Posts: 37,157
|
6,789 | 37,157 |
|
|||
|
Sub-Forums:
| ||||||
|
Troubleshooting & Designing Networks
Post your computer network questions, ideas, gripes, and so on in here. This can be any type of network, whether its cabled, wireless, or whatever. When starting a new thread, please put the make AND model of your device in the thread title. Also be VERY descriptive of your issue, that way you'll get the best answer possible!
Topics: 500
Posts: 5,434
|
500 | 5,434 |
|
|||
|
Troubleshooting Laptops, Tablets, and Mobile Devices
Technical discussions covering any type of laptop, notebook, netbook, tablet, or smartphone. Any and all brands and models welcome. When starting a new thread, please put the make AND model of your device in the thread title. Also be VERY descriptive of your issue, that way you'll get the best answer possible!
Topics: 31,745
Posts: 302,274
Last Post:
nm-c711 schematic & boardview
|
31,745 | 302,274 |
|
|||
|
Sub-Forums:
| ||||||
|
Troubleshooting Computer Displays
Technical discussions covering any type of PC/computer display, whether it be CRT, LCD, or anything else. When starting a new thread, please put the make AND model of your device in the thread title. Also be VERY descriptive of your issue, that way you'll get the best answer possible!
Topics: 5,318
Posts: 75,673
Last Post:
Asus VG278 mosfet identification ?
|
5,318 | 75,673 |
|
|||
|
Troubleshooting TVs and Video Sources
Technical questions about your defective television, projection screen, LCD/plasma, or any other type of video device. When starting a new thread, please put the make AND model of your device in the thread title. Also be VERY descriptive of your issue, that way you'll get the best answer possible!
Topics: 27,430
Posts: 374,451
Last Post:
LG49UH603v No image backlight on
|
27,430 | 374,451 |
|
|||
|
Troubleshooting Power Supplies and Power Supply Design
Technical discussion for power supplies. This covers PC supplies, and any other related power supply issue. When starting a new thread, please put the make AND model of your device in the thread title. Also be VERY descriptive of your issue, that way you'll get the best answer possible!
Topics: 4,178
Posts: 65,195
|
4,178 | 65,195 |
|
|||
|
Troubleshooting Printers, Copiers, Scanners and other Imaging & Printing Devices
Technical questions about your defective laser or ink printer, plotter, copier, scanner, and other imaging & printing devices. This section also includes digital cameras. When starting a new thread, please put the make AND model of your device in the thread title. Also be VERY descriptive of your issue, that way you'll get the best answer possible!
Topics: 301
Posts: 1,662
Last Post:
i need dump for printer canon G3430
|
301 | 1,662 |
|
|||
|
Troubleshooting Audio Equipment
Technical discussion on audio equipment troubleshooting and installation. This can be anything from a home/car stereo, guitar amp, and so on. When starting a new thread, please put the make AND model of your device in the thread title. Also be VERY descriptive of your issue, that way you'll get the best answer possible!
Topics: 2,316
Posts: 27,417
|
2,316 | 27,417 |
|
|||
|
Troubleshooting Appliances and other Household Electronic Stuff
Technical discussion on household appliances & other household electrics & electronics; including troubleshooting and installation. This can be anything from a washer/dryer, dishwasher, microwave oven, other sordid kitchen electrics and so on. When starting a new thread, please put the make AND model of your device in the thread title. Also be VERY descriptive of your issue, that way you'll get the best answer possible!
Topics: 222
Posts: 3,896
|
222 | 3,896 |
by CapLeaker
04-19-2024, 11:39 AM
|
|||
|
Troubleshooting Game Consoles & Other Weird Devices
This can be anything from game consoles to arcade games to anything else that doesn't really fit into any of the above categories. When starting a new thread, please put the make AND model of your device in the thread title. Also be VERY descriptive of your issue, that way you'll get the best answer possible!
Topics: 999
Posts: 10,858
Last Post:
Post your worthless and/or pointless repairs
|
999 | 10,858 |
|
|||
|
Equipment Usage, Soldering, Techniques, and Reviews
Technical discussions concerning soldering techniques, usage of test equipment, how it works, what's best, and some pointers in using it all.
Topics: 1,375
Posts: 19,360
|
1,375 | 19,360 |
|
|||
-
Today, 09:01 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
-
Hi guys!
I have the following Lenovo Thinkpad T14s NM-C791
Serial Number: PF-2CNJYM
Type Number: 20UJ-000WUK
Power button blinks 3 time and nothing happen, there is no boot. EC_RSMRST# is missing. You're my last chance, I hope you help me
[ATTACH]n3259309[/ATTACH]...Today, 03:36 PM -
Hi, I have a Yamaha RX-497 receiver, and one day I came home to a burnt smell and the breaker was tripped. Upon opening the receiver, I saw extreme damage to the main power board. C254 was exploded, R261 was burnt, D255 was shorted, Q254 is open circuit, D261 (bridge rectifier) is also open, traces to IC252 (TC4013BP) are vaporized right off the board. Not sure about any other damage, I'll have to desolder the flip flop to test it. Also the transformer T251 is getting hot when plugged in. What could have caused such extreme damage just sitting plugged in? Only repair that was done in the past...04-18-2024, 05:54 PM
-
Hello. I will be buying new apartment to live. But fuse box is older. Not the newest.
And my question. It will be fine to plug pc in this new apartment with that fuse box,i think it is aluminium,right?
PC WILL BE: Rtx 4090,14900K,1600W PSU
It looks like this ( screen from internet ). Looks like this,not sure i dont take a pic from there. Can i plug pc with that one?
screen of this:
[ATTACH=JSON]{"alt":"Click image for larger version Name:\tGetty-Images-1345734173.jpg Views:\t0 Size:\t236.3 KB ID:\t3244496","data-align":"none","data-attachmentid":"3244496","data-size":"full","title":"Getty-Images-1345734173.jpg"}[/ATTACH]...03-29-2024, 05:37 PM -
[SIZE=12px]Hello world,
Just wondered if anyone could help shed some light on a Razor laptop which I'm struggling to repair for a friend.
Razor RZ09-01963w31
CPU - i7-7500U - 16GB - Intel® HD Graphics 620
Codes from motherboard:
H3 MB
MP V3.0
20170421
E327208
[U][I][B]SYMPTOMS:[/B][/I][/U]
So far the most life I've seen from it is powers on, keyboard lights up, no screen life at all, then powers down; after which any attempt to power it on again results in the power light blinking once and then...Today, 06:40 PM -
Couple of Windows 11 machines have come in this week with the same issue. After you login, the taskbar will not appear (or just be a black bar). No access to Start Menu. Task Manager (use CTL+SHIFT+ESC) works, however the Performance stats seem stuck with CPU on 100% for Task Manager itself. Trying to exit Task Manager result in it hanging as well. No issue if you boot into Safe Mode.
First machine, tried many things to no avail (System Restore from last Windows update, rebooting in Diag mode, trying to reinstall Windows Apps via Powershell). In the end, I did an in-place upgrade...Yesterday, 10:16 PM -
On this set new LED strip. Backlight on but no image
have discovered very hot ic in red market in the picture plus some capacitor that are shorted on mainboard ,3v,5v,and 12v is in present want help deciding which is the bad boy...03-26-2024, 05:27 PM -
Hi, I'm currently trying to diagnose a Gainward RTX 3060 12GB "Pegasus" that I bought as damaged. I know nothing of its prior history.
A boardview for an MSI model, which matches the board layout apart from some resistor values I saw, was already uploaded in the past if you'd like to have a look (I used file V397_70). See [URL="https://www.badcaps.net/filedata/fetch?id=2101580"]www.badcaps.net/filedata/fetch?id=2101580[/URL]
It does not have any shorts but it's not detected by the system (i.e. not even shows up in the output of lspci and the CS pin...Today, 06:01 PM -
Trying to identify this part if anybody has any idea what it might be, would be a good start to repairing this laptop....Today, 03:08 PM
-
Hi, I'm currently trying to diagnose a Gainward RTX 3060 12GB "Pegasus" that I bought as damaged. I know nothing of its prior history.
A boardview for an MSI model, which matches the board layout apart from some resistor values I saw, was already uploaded in the past if you'd like to have a look (I used file V397_70). See [URL="https://www.badcaps.net/filedata/fetch?id=2101580"]www.badcaps.net/filedata/fetch?id=2101580[/URL]
It does not have any shorts but it's not detected by the system (i.e. not even shows up in the output of lspci and the CS pin...Today, 06:01 PM -
Trying to identify this part if anybody has any idea what it might be, would be a good start to repairing this laptop....Today, 03:08 PM
-
Hello everyone
My TV no longer shows signs of life, but if I unplug the motherboard, the backlight works.
I bought a CH341A USB Programmer, and this is my dump (BN41-02568B):
Could someone help me fix it?...Today, 06:05 AM -
Looking for a BIOS for HP 255 G8 (HPL51 LA-L021P).
The main problem is that the laptop will crash while booting to OS. Will crash even on booting from USB, like a Ubuntu or to a Windows 11 installer.
Before junking the board I would try the new BIOS if it does anything.
Thank you!...Today, 10:03 AM -
Hi guys!
I have the following Lenovo Thinkpad T14s NM-C791
Serial Number: PF-2CNJYM
Type Number: 20UJ-000WUK
Power button blinks 3 time and nothing happen, there is no boot. EC_RSMRST# is missing. You're my last chance, I hope you help me
[ATTACH]n3259309[/ATTACH]...Today, 03:36 PM -
[SIZE=12px]Hello world,
Just wondered if anyone could help shed some light on a Razor laptop which I'm struggling to repair for a friend.
Razor RZ09-01963w31
CPU - i7-7500U - 16GB - Intel® HD Graphics 620
Codes from motherboard:
H3 MB
MP V3.0
20170421
E327208
[U][I][B]SYMPTOMS:[/B][/I][/U]
So far the most life I've seen from it is powers on, keyboard lights up, no screen life at all, then powers down; after which any attempt to power it on again results in the power light blinking once and then...Today, 06:40 PM -
hello everyone I am looking for a solution for my tv, I think corruption of the eemc,
the TV starts, LG logo, then nothing (rear backlight)
no reaction to rear command or infrared
the usb procedure that I tried on the LG site is a procedure with the screen and the remote control so I can't.
I have a chance with a usb procedure or other if you have .bin
if any people have this main board
Sony LG 60la620s EAX64797004 (1.1)
[ATTACH=JSON]{"data-align":"none","data-size":"full","title":"1713895782944.jpg","data-attachmentid":3258485}[/ATTACH]...Yesterday, 01:52 PM -
Hi community! Germany calling I am wondering if you guys can help me out. I have an issue with my Sony LED TV. I've been told this is a good place to ask. Thanks for anyone who will reply and offer advice. Appreciated!
I have a KD-65X9005A Sony 4k LED TV. For a few weeks I've got this problem where I turn on the TV and within a few seconds the TV starts getting darker until it shuts itself off and I get the 4 blinking error code. HOWEVER there is one exception: Whenever I switch to the i-Manual, a full screen on-screen instruction manual, the TV never turns off. I tested for hours!...03-20-2024, 07:29 AM -
Hi. Can any one help me with a schematic for Predator Helios 300 G3-571-77QK. Many thanks in advance.Today, 02:35 AM
-
Hello.
I have an Asus X705UV which no longer starts since the last Windows update. I suspect Windows Update of having tried to update the bios and having corrupted it, because currently, I have the charging indicator when I plug in the charger and I have the power indicator when I press the on/off button but nothing more, not even a fan running.
Could someone check this bios and if it is broken, repair it?
Sorry in advance, google translate is useful but not perfect. 😂
Thank you in advance ! 🙏...Today, 06:38 AM