-
For a number of reasons, both health and personal, I will no longer be active on this board. Any PMs asking for assistance will be ignored.
Never be afraid to try something new. Remember, amateurs built the ark. Professionals built the Titanic. -
Re: Viewsonic VP211b
They are supposed to be in the tool box.
.
I suppose if you mix your tools and utensils like that you could use the putty knife in the kitchen drawer to spread things on toast.
It's probably a better tool for that anyway.Mann-Made Global Warming.
- We should be more concerned about the Intellectual Climate.
-
Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind.
- Dr Seuss
-
You can teach a man to fish and feed him for life, but if he can't handle sushi you must also teach him to cook.
-
Comment
-
For a number of reasons, both health and personal, I will no longer be active on this board. Any PMs asking for assistance will be ignored.
Never be afraid to try something new. Remember, amateurs built the ark. Professionals built the Titanic.Comment
-
Re: Viewsonic VP211b
And dissecting picks are for dissecting and guitar picks are for picking guitar strings.
.
The proper tool for a job isn't in it's name it's in what it does.
.Mann-Made Global Warming.
- We should be more concerned about the Intellectual Climate.
-
Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind.
- Dr Seuss
-
You can teach a man to fish and feed him for life, but if he can't handle sushi you must also teach him to cook.
-
Comment
-
Re: Viewsonic VP211b
We use old toothbrushes and Q-Tips for removing rosin from boards after soldering. And I read one enterprising member on this forum use a heated screwdriver as a soldering iron! I'm waiting for someone to pull a "Macgyver" and make a ESR meter out of a paperclip and 9V battery.Comment
-
Re: Viewsonic VP211b
Heated screwdriver, I like it! When removing bad caps before, my iron was too fat for some of the job, so I got a thick sewing needle in some pliers and heated it up with a little propane torch, worked a treat
Comment
-
Re: Viewsonic VP211b
I had to bore a couple of holes in a PCB once and the ship was short on drills.
Couldn't get my hands on one for days. Waiting list.
I made a bow drill in the fashion of a fire starting kit [pic below] and used that to spin the bit.
Took a while, but not as long as the waiting for a drill.
.
Mann-Made Global Warming.
- We should be more concerned about the Intellectual Climate.
-
Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind.
- Dr Seuss
-
You can teach a man to fish and feed him for life, but if he can't handle sushi you must also teach him to cook.
-
Comment
-
Re: Viewsonic VP211b
My VP211b produces a black screen upon powering up. The green power light comes on and after 30 seconds the green light switches to orange "power save mode". Note, I cannot access the OSD. I have recapped the power supply thinking that was the issue. But monitor responses they same way it did proir to the recap.
Any ideas as to what the problem may be?Comment
-
Re: Viewsonic VP211b
Do you have a signal going to the monitor?Whatever I do, I consider it a success, if in the end I am breathing, seeing, feeling and hearing!
Comment
-
Re: Viewsonic VP211b
First, let me correct my original post. Prior to recapping the power supply the VP211b responding as follows: Black Screen, No OSD, Power light green then switches to orange. After recapping: Black Screen, No OSD, green power light steady and no longer switching to orange. Note, power light stays green on one of the signals when I switch to the second signal input option "via toggle switch" the light turns orange.Comment
-
Re: Viewsonic VP211b
I do have the monitor connected to a computer so I think I have a signal going to the monitor. However, I have not verified the cable nor established the monitor in XP's system data.Comment
-
Re: Viewsonic VP211b
Set the switch to where you get a steady green light indicating is good signal.
It may be difficult to see, but with a light shined on the LCD can you see an image?
Eventually you are going to need to provide photos of your power supply, and possibly the signal card and inverter if it is separate.
The members that try to help with LCD problems prefer that you would use the Managed attachments feature when you provide photos. A straight down shot without a flash, so the writing on the board is readable is best.Whatever I do, I consider it a success, if in the end I am breathing, seeing, feeling and hearing!Comment
-
Re: Viewsonic VP211b
Been there, done that, never got the tee-shirt. Inverter power is routed through the signal card. The inverter has two (three?) fuses. If either is open, the backlights never come on.
I used a bench supply to power up the side with the blown fuse and verify it worked properly. Another option would be to hook an 1157 automotive light bulb across the open fuse. Of course, there is always the possibility of another problem.
PlainBillFor a number of reasons, both health and personal, I will no longer be active on this board. Any PMs asking for assistance will be ignored.
Never be afraid to try something new. Remember, amateurs built the ark. Professionals built the Titanic.Comment
-
Re: Viewsonic VP211b
just got my hands in one of those units, and the problem ended up being the logic board (besides the recap). I have some parts for those units, so I just swapped it and that was it. I will find time to troubleshoot the logic board in the future, but for now, that was the solution...There are 10 kind of people in this world: those that understand binary, and those who don't.- ASUS ROG Maximus IX Code
- Intel Core i5-7600K 3.8GHz
- 16gb GSKILL TridentZ RGB DDR4-3200
- 1 M2 SSD + 2 WD Blue 1TB (Mirrored)
- Windows 10 Pro x64
- GeForce GT1050
2 x Acer KA240H + 1 Vewsonic VP2130 21 (a cap replacement job
)
Comment
-
Re: Viewsonic VP211b
Hey Bill.....
I am playing with one of these right now and the fuses on the inverter are toasted...... What size are they? Do you or anyone know?
KeithComment
-
Re: Viewsonic VP211b
Is there a letter on them, or a warning to 'Replace only with x Amp fuse'?
PlainBillFor a number of reasons, both health and personal, I will no longer be active on this board. Any PMs asking for assistance will be ignored.
Never be afraid to try something new. Remember, amateurs built the ark. Professionals built the Titanic.Comment
-
Problem
This is an LG edge LED lit LCD Display. The LEDs are on the bottom edge of the display. There are 2 bars (left and right) Each bar has many LEDs and a 6 pin connector. Each pin drive several LEDs thus is the highest current flow / heat junction. The weak lead free solder gradually fails with thermal expansion/contraction cycling and increases resistance. PSU will compensate up to a point, then when the current is too high, PSU just shut down the backlight causing a dark display. I have even seen one which the connector just fell off as solder points became completely detached.... -
Hello, I removed the graphics card from my laptop and I want to heat it in the oven. What I want to ask is, is it okay to heat the card without removing the metal mounting frame on it?
As you can see in the photo, there is a plastic (black) gasket between the metal frame and the card. It sticks the frame tightly to the card.
I previously removed the metal frame while heating it, but it is quite difficult to separate it from the surface it is attached to. If there is no problem, I do not want to remove it.
What worries me right now is the possibility that... -
Some new tvs have an LCD screen attached to the outside of the frame with foam tape. These are "edge to edge" as they are called. I am trying to figure out how to reattach an LCD panel back up to the frame. The manufacturer used 3/16 inch foam tape along the top and rh/lh edges. I used a razor blade to separate the panel from the metal frame. The metal frame that the panel is taped to is 1/4 inch wide along the 2 sides and top. I completely removed the residue from the metal frame. There is some residue on the panel itself along the 3 edges, I removed almost all of it using alcohol and... -
Design of CCFL Backlight Inverters with Frame & Bar Cores
Summary
Portable devices, such as notebook computers and personal digital assistants are developed rapidly nowadays, which places an increasing demand on display technology. The LCD with cold cathode fluorescent back lighting satisfies the requirements on display performance, size and efficiency.
The backlight inverter plays a crucial role in supplying the power to the lamps of these flat-panel displays.
The frame and bar ferrite cores, described in this brochure, are especially designed...10-07-2024, 04:26 AM -
Hello everyone,
I got a Samsung The Frame 55 inch TV for free from uncle cause it is not turning on anymore. I am in the second year of training as an electrician so I have knowledge already but I am far away from to be a pro.
The TV has Standby but ist not turning on. A Friend of mine owns a 50 inch Frame TV so I checked the One Connect Box and the One Connect Cable there. Both are good and working normally. I have opened the TV case and measured some voltages on the Board.
What I already found is that the 12.8V are not an the connector to the main board connector to the power...
Comment