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
Site News

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


  

Author Topic: ms9 blowing HOT  (Read 220 times)

0 Members and 1 Guest are viewing this topic.

shifter

  • Trade Count: (0)
  • Jr. Member
  • **
  • Offline Offline
  • Posts: 8
  • I want to build my own arcade controls!
ms9 blowing HOT
« on: June 22, 2017, 06:22:42 am »
Hi, wondering if any of you more experiences guys can help me out, i have a ms9 from a Jurassic park that blows the hot on power up and leaves it whistling, the B+ is 118v which is correct for the frequency its running.
Had a dig around but stuck so any help appreciated.

Thanks.

morton

  • Trade Count: (0)
  • Full Member
  • ***
  • Offline Offline
  • Posts: 142
  • I want to build my own arcade controls!
Re: ms9 blowing HOT
« Reply #1 on: June 25, 2017, 11:01:23 am »
What is your background electronically?

Before poking around - you need to be given the "CRT's are dangerous and can kill you" warning, and urge you at least make sure you know how to properly discharge a CRT. That out of the way...

The first and foremost thing once you're discharged would be a visual inspection - can you verify that all components are in good physical order? Eliminate any risk of shorts etc. While it may not have moved, many things can and will cause issues. Debris, or buildup of carbon can cause shorts. Humidity can be enough to kill a monitor. Maybe you already have done a visual check, but it's something that is pretty simple and doesn't require too much in the way of specialized equipment.

Look for bulging or leaky caps, burnt spots on the board, crumbling resistors and anything that looks unhealthy and document anything you see. It may tell you more about the health of your monitor than just how to stop it from blowing.

shifter

  • Trade Count: (0)
  • Jr. Member
  • **
  • Offline Offline
  • Posts: 8
  • I want to build my own arcade controls!
Re: ms9 blowing HOT
« Reply #2 on: June 27, 2017, 06:37:33 am »
I have some electronics background and im quite happy with working on this sort of stuff so don't worry ;) Any ideas on my problem, are you familiar with these monitors ?

grantspain

  • I personally prefer "bog trotter"
  • Trade Count: (+1)
  • Full Member
  • ***
  • Offline Offline
  • Posts: 5602
Re: ms9 blowing HOT
« Reply #3 on: June 27, 2017, 05:36:13 pm »
only ever had ms9 constantly blowing HOT when b+ is not regulated, fake replacement transistor(90% of high power transistors on ebay are fakes), shorted hv cap or bad flyback
obviously you have changed all the capacitors in the power supply section?

  
 

Sitemap 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31