Hello, I came here after finding some similar questions asked on other monitors and hope someone here can help me get an ancient Viewsonic VP230mp (23" 4:3 LCD) back to working condition.
First a little background, I have a background in computer and electrical engineering, and I'm smart enough to know I know nothing about LCD displays and how they work. For this topic I'm as green as they come.
When the display is turned on the viewsonic logo displays in the uppper left for 2 seconds then the screen goes black, the power LED is green (on) and when a computer is connected...
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: 237
Posts: 42,521
|
237 | 42,521 |
|
|||
| 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: 2
Posts: 5
Last Post:
ncp81208 datasheet
|
2 | 5 |
|
|||
| 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: 3,195
Posts: 32,742
Last Post:
How can I test non-polarized capacitor?
|
3,195 | 32,742 |
|
|||
|
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: 4,508
Posts: 74,898
Last Post:
Find owner of MacBook air with icloud lock
|
4,508 | 74,898 |
|
|||
| 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: 3,996
Posts: 44,549
|
3,996 | 44,549 | ||||
|
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: 6,902
Posts: 37,762
|
6,902 | 37,762 |
|
|||
|
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: 502
Posts: 5,458
Last Post:
4G LTE router sim socket replacement
|
502 | 5,458 |
|
|||
|
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: 32,297
Posts: 309,101
Last Post:
Dell Precision 5560 bios locked
|
32,297 | 309,101 |
|
|||
|
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: 5,332
Posts: 75,748
|
5,332 | 75,748 | ||||
|
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: 27,509
Posts: 375,335
Last Post:
Samsung le40a656a1f reaaaaaly slow poer up
|
27,509 | 375,335 |
|
|||
|
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: 4,198
Posts: 65,361
|
4,198 | 65,361 |
|
|||
|
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: 307
Posts: 1,689
Last Post:
Celestron PentaView LCD Digital Microscope
|
307 | 1,689 |
|
|||
|
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: 2,344
Posts: 27,610
Last Post:
Cement resistor swap in H/K AVR
|
2,344 | 27,610 |
|
|||
|
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: 227
Posts: 3,940
Last Post:
Xiaomi Roidmi EVE Pro battery died!
|
227 | 3,940 |
|
|||
|
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: 1,022
Posts: 10,992
Last Post:
PS5 Slim Beep No Light UART DDR4 Error
|
1,022 | 10,992 |
|
|||
|
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: 1,382
Posts: 19,500
|
1,382 | 19,500 |
|
|||
-
-
[B]Chromebook e100 2nd Gen - Bios enable Developer Mode and remove Managed by...[/B]
I Have Chromebook e100 2nd Gen,
Please can you enable Developer mode and remove managed by ... please
mlb_serial_number: [B]1532022002872[/B]
serial_number: [B]PF2TKV5V[/B]
model_name: [B]Lenovo 100e Chromebook 2nd Gen[/B]
mfg_date: [B]2021-04-19[/B][B]Chromebook e100 2nd Gen - Bios enable Developer Mode and remove Managed by...[/B]
I Have Chromebook e100 2nd Gen,
Please can you enable Developer mode and remove managed by ... please
mlb_serial_number:...Today, 12:57 PM -
fpw50 la-h325p rev 3.0 bios please mine is 4MB...Today, 03:08 PM
-
I have a 5W lamp on 12Volts battery, I want it to be half as bright, so I will add a resistor. What resistor should I supply?
A = W = 5 = 0.416mA
_ _
V 12
R = V = 12 = 28.84 Ohms (R) this is resistance of lamp
_ _____
I 0.416
So I will add one resistor 28.84 Ohms
I will have 28.84 + 28.84 = 57.6 Ohms
Or 28.84 + 28.84 = 14.42 Ohms
I don't know if it will work in series or in parallel
voltage would be 6V and amp current mA = 0.208mA We divide everything by two
W= V * I...Yesterday, 01:58 AM -
Can I ask you guys help me identify this godforsaken component?
I'm tearing my hair out finding this component.
The board is from an egg incubator.
i got it with a "popped cap" while there are many damaged components on it, which got succesfully identified with one exception:
[ATTACH=JSON]{"data-align":"none","data-size":"medium","data-attachmentid":3267072}[/ATTACH]
And here is the board where it came from (U1/1):
[ATTACH=JSON]{"data-align":"none","data-size":"medium","data-attachmentid":3267073}[/ATTACH]...05-08-2024, 08:21 AM -
See attached picture. I have a Fluke T100 Voltage Tester that the resistance and diode measurement isn't working (it's not the batteries (as I have already checked them and put decent Duracell 1.5V AAA batteries inside it).
I have looked on the web for any information and on youtube without any results for this model.
There are no screws visible or anything obvious. So I am hoping someone here has the solution to take it apart?
The only way I can see is underneath the yellow rubber handle area, however I don't wish to damage it if it isn't the case!...Yesterday, 07:21 AM -
I need la-h325p bios please make sure it's 4MB...Today, 02:47 PM
-
I have and Asus Q409ZA that I purchased new, and all was well until it eventually turned on to a black screen.
I backed up my original BIOS. I then downloaded and flashed an engineering BIOS posted by another member. It works great until something updates and the laptop starts up to a black screen, no activity. It can be reflashed with the engineering BIOS and work again until etc. etc.
I've attached the original dump of this laptop with its serial number and other information in tact. I've also included the new engineering BIOS. Maybe somebody could take a look and...Today, 02:29 PM -
Hello everyone, I need some help with a PS5 Slim board EDM-040 that will beep but no light or fan spin.
When I connect my bench power supply, (12v 0.500amp) the amps go between .135-.035 then back to .005.
When I attach UART I get the error code below. I have replaced the DDR4 ram IC with one from a donor board. Cannot verify is the IC was working or not, still same error.
[Slot #] [Date Time] [Error Code] [Priority] [Error Message]
00 5/27/2024 4:25:40 PM 80871001 Low DDR4 Error (Power Failure or Short Circuit)
|-(OK 00000000 80871001 17554CCE...05-27-2024, 02:51 PM -
Hi... Does anyone have a schematic LENOVO AIO 510-22ISH FOCB (Mobo number CCA11 LA-D952P) ???...
[URL=filedata/fetch?filedataid=339524][ATTACH=JSON]{"data-align":"none","data-size":"small","data-tempid":"temp_339524_1717623230892_578"}[/ATTACH][/URL] [URL=filedata/fetch?id=3284546&d=1717597851][ATTACH=JSON]{"alt":"Click image for larger version Name:\tF!_GUE_4S0D01.png Views:\t0 Size:\t224.5 KB ID:\t3284546","data-align":"none","data-attachmentid":"3284546","data-size":"small"}[/ATTACH][/URL]...Today, 08:38 AM
-
[B]Chromebook e100 2nd Gen - Bios enable Developer Mode and remove Managed by...[/B]
I Have Chromebook e100 2nd Gen,
Please can you enable Developer mode and remove managed by ... please
mlb_serial_number: [B]1532022002872[/B]
serial_number: [B]PF2TKV5V[/B]
model_name: [B]Lenovo 100e Chromebook 2nd Gen[/B]
mfg_date: [B]2021-04-19[/B][B]Chromebook e100 2nd Gen - Bios enable Developer Mode and remove Managed by...[/B]
I Have Chromebook e100 2nd Gen,
Please can you enable Developer mode and remove managed by ... please
mlb_serial_number:...Today, 12:57 PM -
fpw50 la-h325p rev 3.0 bios please mine is 4MB...Today, 03:08 PM
-
I need la-h325p bios please make sure it's 4MB...Today, 02:47 PM
-
I have and Asus Q409ZA that I purchased new, and all was well until it eventually turned on to a black screen.
I backed up my original BIOS. I then downloaded and flashed an engineering BIOS posted by another member. It works great until something updates and the laptop starts up to a black screen, no activity. It can be reflashed with the engineering BIOS and work again until etc. etc.
I've attached the original dump of this laptop with its serial number and other information in tact. I've also included the new engineering BIOS. Maybe somebody could take a look and...Today, 02:29 PM -
-
Hi... Does anyone have a schematic LENOVO AIO 510-22ISH FOCB (Mobo number CCA11 LA-D952P) ???...
[URL=filedata/fetch?filedataid=339524][ATTACH=JSON]{"data-align":"none","data-size":"small","data-tempid":"temp_339524_1717623230892_578"}[/ATTACH][/URL] [URL=filedata/fetch?id=3284546&d=1717597851][ATTACH=JSON]{"alt":"Click image for larger version Name:\tF!_GUE_4S0D01.png Views:\t0 Size:\t224.5 KB ID:\t3284546","data-align":"none","data-attachmentid":"3284546","data-size":"small"}[/ATTACH][/URL]...Today, 08:38 AM -
I have an ASUS X399-A with a cracked corner. I don't think it affects anything but I would like to make sure. The X399-A and X399-E look like the same board, so any will do. If someone can share it, thank you very much!Today, 01:08 PM
-
Hi Peeps.
Quick question. Might sound silly so bear with me pls.
After flashing a BIOS with a flashing tool, my laptop went from stone dead, to the fan spinning. However the screen doesnt show POST. Is there anything like pulling out the battery AFTER flashing the BIOS one needs to do or is there another issue I am sitting with now?Today, 01:00 PM -
I have a 5W lamp on 12Volts battery, I want it to be half as bright, so I will add a resistor. What resistor should I supply?
A = W = 5 = 0.416mA
_ _
V 12
R = V = 12 = 28.84 Ohms (R) this is resistance of lamp
_ _____
I 0.416
So I will add one resistor 28.84 Ohms
I will have 28.84 + 28.84 = 57.6 Ohms
Or 28.84 + 28.84 = 14.42 Ohms
I don't know if it will work in series or in parallel
voltage would be 6V and amp current mA = 0.208mA We divide everything by two
W= V * I...Yesterday, 01:58 AM -
daxktdmb8c0
Maybe someone has a photo of a section of the board, otherwise there are no diagrams or boardview...Today, 12:31 PM