Main Restorations Software Audio/Jukebox/MP3 Everything Else Buy/Sell/Trade
Project Announcements Monitor/Video GroovyMAME Merit/JVL Touchscreen Meet Up Retail Vendors
Driving & Racing Woodworking Software Support Forums Consoles Project Arcade Reviews
Automated Projects Artwork Frontend Support Forums Pinball Forum Discussion Old Boards
Raspberry Pi & Dev Board controls.dat Linux Miscellaneous Arcade Wiki Discussion Old Archives
Lightguns Arcade1Up Try the site in https mode Site News

Unread posts | New Replies | Recent posts | Rules | Chatroom | Wiki | File Repository | RSS | Submit news

  

Author Topic: WG K7000 blew up!  (Read 1253 times)

0 Members and 1 Guest are viewing this topic.

MK3FAN

  • Trade Count: (+7)
  • Full Member
  • ***
  • Offline Offline
  • Posts: 975
  • Last login:May 09, 2022, 07:07:29 pm
WG K7000 blew up!
« 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.
« Last Edit: December 24, 2009, 10:34:09 am by MK3FAN »
Current collection - 28 cabs, 4 pins. (32 machines and not enough room)

Ken Layton

  • Guru
  • Trade Count: (+1)
  • Full Member
  • ****
  • Offline Offline
  • Posts: 7061
  • Last login:October 12, 2021, 12:25:59 am
  • Technician
Re: WG K7000 blew up!
« Reply #1 on: December 24, 2009, 10:41:02 am »
Always make sure the board is secured and insulated.

Kevin Mullins

  • Trade Count: (+2)
  • Full Member
  • ***
  • Offline Offline
  • Posts: 4504
  • Last login:February 01, 2021, 01:29:34 pm
    • Me on Myspace
Re: WG K7000 blew up!
« Reply #2 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.
Not a technician . . . . just a DIY'er.

Nipedley

  • Trade Count: (0)
  • Full Member
  • ***
  • Offline Offline
  • Posts: 483
  • Last login:October 04, 2024, 12:03:26 am
Re: WG K7000 blew up!
« Reply #3 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!

turbohao

  • Trade Count: (0)
  • Jr. Member
  • **
  • Offline Offline
  • Posts: 6
  • Last login:March 15, 2015, 04:00:27 pm
Re: WG K7000 blew up!
« Reply #4 on: December 29, 2009, 03:16:22 am »
ouch sounds dangerous working on a monitor while the power is on
 :dizzy: