WEi Ya Flyback Repair

montech

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Ok as these things become harder and harder to find we have to get creative. I used to do this repair years ago on high voltage "triplers" in color televisions. Obtain a bottle of MG super corona dope, see picture. Remove fly back from Chassis and clean thoroughly. If you look close you can see where the crack and leak is in the flyback. Coat a layer on this crack and cure in an oven(that you don't cook with) at 180 degrees(see data sheet) for 1 hour. Layer and repeat. I use about 5 layers as its 4100 Volts/mil. So this is a 6 hour project, but what you going to do when your Chinese flyback fails and there isn't anymore? Follow cure times and reinstall your flyback. Use caution when restarting monitor!. Here is a pic of my Wei Ya repaired. Not a peep out of the Flyback!
 

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Interesting to say the least... But what cet are you?

A video may be more telling.

I have heard of people doing this, but the fact it could fail worse than before in a firey explosion..... Kinda does not appeal to me... How long does the repair last for on average? Hrs wise?


The xray guy may be here soon.
 
I'm a Certified Electronic Technician with 35 years of experience. I have repaired probably 5,000 televisions in my life and about 2000 monitors. I worked for Wells Gardner as a monitor Technician, servicing the gaming Industry in Las Vegas, repairing both arcade and gaming monitors. Those are my credentials. Hope that answers your question.
As far as the X-ray meter guy showing up this isn't a X-ray failure, its a crack in the epoxy substrate that allows high voltage to leak out. We have seen these leaks at the Focus/screen control substrate haven't we (Ceronix :) )? The high voltage doesn't raise making more xrays. In fact the high Voltage drops during a discharge. Ohms law. X-ray failures are related to the B+ voltage being to high or a raise in Horizontal frequency, and there are X-ray protect circuits in the Horizontal Drive for that.
I have done this repair quite a few times and have NEVER seen a flyback or tripler or other HV component explode due to it. We are just repairing a corona leak here.
I have had flybacks run for years after this fix. It is a band aid approach to replacing the flyback, so some last some don't. Not recommending this repair when a replacement is available. It just something I have done in the past to keep an otherwise flawless monitor going, when the flyback is discontinued.
But hey I love the comment! I need to be questioned just like everybody else, keeps me honest! :)
 
Ive seen this done by a youtuber by the name of shango066 a couple times.
he usually repairs flybacks older than this though.
 
I question everything.

But fantastic that you are willing to share what you know.

What we truely need, is for someone to sit down on camera and explain the little details on component failure and what makes these things tick.

Safe practices, modifications such as this one, and the risks associated with doing them.

There are genius savants here on klov.... And the social communication aspect is oblivious to them. It's not their fault and I accept them as they are. (More brilliant in this field than I myself am).

Best wishes in your stay here, I hope you can lay down some monitor wisdom.

I for one welcome any new blood, and a new take on some tips and tricks to keep these monitors and games in general going.

Where I am at in Texas, we have only a few techs.

They are super busy working for coinops, and priced wayyy higher then my frugal self is willing to pay.

Hang up a jacket buddy, stay a while.
 
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