Welcome, Guest. Please login or register.
November 22, 2024, 03:17:34 PM

Login with username, password and session length
* Home Help Arcade Login Register
.
+  Forum
|-+  **Reel Slots** Gaming Machines
| |-+  Universal Reel/Video Games. (Moderator: uniman)
| | |-+  Help me put the smoke back in
0 Members and 1 Guest are viewing this topic. « previous next »
Pages: [1] Go Down Print
Author Topic: Help me put the smoke back in  (Read 2214 times)
jbshocks
NLG Member 101 to 500 Post
***

Total Karma Storms: 21
Offline Offline

Gender: Male
Posts: 463



« on: November 07, 2011, 10:09:28 PM »

I got a Universal Ultra board in with a batch of parts that had previously had a thermal event with visual effects.  I was not concerned with the problem area.  It ran all the lights on the buttons.  I removed the burned up IC socket and didn't replace it yet but I decided to power up the board.  It did a ram clear and took bills but not coins.  I hit bet max and I got real sounds but the reels made no attempt to move.  This is just some back ground the real issue is what I caused in my diagnosis.  I was attempting to do a meter reading on ch 3 in the picture and didn't take the time to switch to proper probes.  I shorted  CH7 to CH 3 with a meter probe and heard it go pop and then the BV light went out.  In hind sight I clearly had voltage or the light wouldn't have been on but now no voltage.  What in the pictured circuit could have failed?  I can't image it being the caps so that only leaves those 2 little noise filters.  Does it seem like logically that one of those could have made and audible pop?  They have no visible damage.  How do you test those?  Can I bypass it and see if the voltage comes back? 

I will also add that I put the original board back in the machine and all is well so the issue is on the board.


* Universal power.png (512.21 KB, 1502x1120 - viewed 356 times.)
Logged
poppo
Contributing Gold NLG Member
Sr.Tech NLG Member 1000+ Post
*

Total Karma Storms: 248
Offline Offline

Gender: Male
Posts: 3266



« Reply #1 on: November 07, 2011, 10:58:07 PM »

I can't image it being the caps so that only leaves those 2 little noise filters.  Does it seem like logically that one of those could have made and audible pop?  They have no visible damage.  How do you test those?  

They just have inductors in them so they should measure just a few ohms from each input to output. If one is open, you 'might' be able to get by with just jumpering them.
Logged
Pages: [1] Go Up Print 
« previous next »
Jump to:  


If you find this site helpful, Please Consider Making a small donation to help defray the cost of hosting and bandwidth.



Newlifegames.com    Newlifegames.net    Newlifegames.org
   New Life Games    NewLifeGames  NLG  We Bring new Life to old Games    1-888-NLG-SLOTS
Are all Copyright and Trademarks of New Life Games LLC 1992 - 2021


FAIR USE NOTICE:

This site contains copyrighted material the use of which has not always been specifically authorized by the copyright owner.
We make such material available in an effort to advance awareness and understanding of the issues involved.
We believe this constitutes a fair use of any such copyrighted material as provided for in section 107 of the US Copyright Law.
In accordance with Title 17 U.S.C. Section 107, the material on this site is distributed without profit to those
who have expressed a prior interest in receiving the included information for research and educational purposes.

For more information please visit: http://www.law.cornell.edu/uscode/17/107.shtml.

If you wish to use copyrighted material from this site for purposes of your own that go beyond fair use,
you must obtain permission directly from the copyright owner.

NewLifeGames.net Web-Site is optimized for use with Fire-Fox and a minimum screen resolution of 1280x768 pixels.


Powered by SMF 1.1.20 | SMF © 2013, Simple Machines
Loon Designed by Mystica
Updated by Runic Warrior
Page created in 0.091 seconds with 20 queries.