I've got a Viewsonic G810 and when I start it up, the monitor will make a popping sound and the picture will jump a little bit. When I say pop, it's not the degaussing coil firing. It's a different sound more like a snap. This seems to die down once it's been on for awhile but still shows up periodically once it's warmed up. I have been told that this might be the flyback. Any thoughts?
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Re: Viewsonic G810 pop/jump from cold
Hey folks. A little more use on this monitor and it's kind of doing something else now. When I power it, it will degauss and then the image will stretch off the screen and the screen will go dark. Is this the flyback? What can I do to fix this? -
Re: Viewsonic G810 pop/jump from cold
Start by checking for poor connections around the horz. output / flyback area.
I got rid of all my crt moitors, you can find 19" and even 22" lcd's for next to nothing, that may only need a cap. or two changed.Comment
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Re: Viewsonic G810 pop/jump from cold
You're right. Unfortunately this is going into an old arcade cabinet and they want authenticity
I'm going to check the flyback and see. How tough is it to replace the flybacks on these things? I was checking my storage shelf and it turns out I actually have a replacement flyback for one of these sitting in my workshop.
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Re: Viewsonic G810 pop/jump from cold
Changed the flyback, got nothing. The flyback looks like it might have been from a different unit. Slightly different design, the 5 pins off from the U shaped set of pins didn't exactly line up. Any suggestions on where I can get the actual flyback for one of these?Comment
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I have a G810 monitor i've had for years but it has developed a problem with vertical collapse. Is there anybody here who has worked on these and can help me find where the circuit even is for the vertical deflection?04-01-2025, 07:57 PM -
Hi all,
I have a CRT (Acorn AKF12, based on the 240V version of the Philips CM8500) which has stopped working. It's making a high pitched noise but not too high. I know this is symptom of a faulty flyback.
What happens when a flyback fails? I see that the main voltages out of the PSU are not reaching rated values, as if there is a short.
There are supposed to be 125V/26.5V/15.5V outputs but I am reading something like 48V, 10V and 8V. If I unplug the PSU from the rest of the PCB, I can measure the expected values.
Can it be a short somewhere... -
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... -
I just saved this magnificent RGB input Eizo Flexscan TX-C7 MA-791 from the local e-waste...good news, the tube works and the board looks great...the bad news, it sounds like the flyback is shorted. (Turns on...perfect picture...systemic high voltage crackling heard while the picture flickers...then it blows the 5A fuse in my isolated A/C power supply.)
Anyone have any leads on possibly finding a replacement? (photo shows the flyback model numbers)... -
Hi All,
I'm looking for a SMPS flyback transformer TAM TO-5622, or equivalent, or any information on it? Company is Tamura Corp (https://www.tamuracorp.com). It has Primary, Secondary, and Auxiliary windings. Have emailed the company, but no info back yet. It is out of a Makita DC24SC battery charger.. This transformer has a burnt out the primary (caused by a failed MOSFET). Secondary, gave me a reading of 0.49 Ohms, and Auxiliary a reading of 0.93 Ohms. I took it to bits, thinking I might try and re-wind it, but it was more complex than I realized, and had difficulty removing...Yesterday, 02:03 PM
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