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Main => Monitor/Video Forum => Topic started by: MK3FAN on December 24, 2009, 10:32:11 am

Title: WG K7000 blew up!
Post by: MK3FAN on December 24, 2009, 10:32:11 am

Hey everyone. Just wanted to share my experience with my stupidity. I recently purchased a used, working K7000 series 25" monitor chassis from a nice guy over at KLOV. I used it for testing for  couple days and it worked great. Only thing was that the tube I was using has no isolation for the chassis. You know, the white insert towards the front of the frame and the little isolation stand off pegs at the back of it for the chassis to sit on. So I just grabbed a magazine, layed it in the frame, set the chassis on it, and it worked fine. Couple days ago, while it was on, I tried to disconnect the video cable, the chassis shifted, and the bottom corner arc welded to the frame. BIG flash of light and the monitor of course shut off. I was PISSED! I can't believe I did that. So I removed the chassis and got to troubleshooting. Checked the HOT first. It was good. Checked the IC4. It was good. Next came the 4 diodes for the power circuit. ALL 4 read shorted. I removed them from the circuit and they all still read shorted. I just happened to have an extra non-working K7000 19" chassis laying around and stole the diodes from it. Installed them on the other chassis. Read them just to be sure, and they read fine. (.542 one way and 0.L the other). Reinstalled the chassis on the tube, turned it on and.....voila! Monitor came back on and works great. The moral of the story is, DON'T mess with stuff while power is on! I knew that, but I had a lapse in judgment. I hope you can all forgive me and learn from my mistake. Thanks for your time.

Title: Re: WG K7000 blew up!
Post by: Ken Layton on December 24, 2009, 10:41:02 am

Always make sure the board is secured and insulated.

Title: Re: WG K7000 blew up!
Post by: Kevin Mullins on December 24, 2009, 10:57:42 am

Yup, I have done similar stupid stuff before.
Shortcuts in the long run save you no time.

Title: Re: WG K7000 blew up!
Post by: Nipedley on December 28, 2009, 01:15:15 pm

My K7000 blew up but it wasn't being moved, it was being played. It's replacement however wouldn't fit in properly so I ended up cable-tieing it in place due to lazyness and lack of drill or other suitable equipment. I have faith in my cable ties but might add a few extra for security after hearing your story!

Title: Re: WG K7000 blew up!
Post by: turbohao on December 29, 2009, 03:16:22 am

ouch sounds dangerous working on a monitor while the power is on
 :dizzy: