White Water
Williams, 1993Ok so we have a check fuse f114 and f115
Both fuses are good
D1 and D2 are good
Checked the continuity on 7812 voltage regulator , all is good ...
Led 1 and Led 6 are not lit , so no 12 volt or 18 volt power TP3 and TP8
What’s next to check and how to obtain the 12 and 18 volts
http://www.pinwiki.com/wiki/index.php?title=Williams_WPC#Check_fuses_F114_and_F115_message
This may help if you haven't seen it.
LTG : )
thank you i had used that info to get as far as i have got so far, i has reading it on my phone tho maybe if i print it off, it will help more.. i have a electrical friend of mine help trouble shoot tonight, but were stuck at no volts getting to TP3 and TP8, told him i would ask pinside for help...
You should always test a fuse by removing one side of the fuse from the fuse holder. No LED6 means no 18V and therefore also no 12VR as you've mentioned.
You want to check BR1.
It's likely that it has failed open. If it failed shorted then F114 would be blown. The procedure is documented in the same section as the information for F114/F115 failure.
Quoted from Gavotron:Also are those jumper wires on br2 factory ?
Nope, not factory.
Quoted from Gavotron:Also are those jumper wires on br2 factory ?
I dont know if I ever have seen factory jumpers.
Quoted from fiberdude120:I dont know if I ever have seen factory jumpers
POTC https://pinside.com/pinball/forum/topic/is-this-a-hack-1
Quoted from Gavotron:Changed the bR1 and still no volts
Without a better look at the board I am only assuming. Check the traces from BR1 to C6 and C7. The traces may go from the component side of the board to the solder side of the board. It looks like there's a jumper there already so it's likely someone has replaced these capacitors and destroyed the through hole.
I just dealt with a similar problem and repair at the Northwest Pinball and Arcade Show.
fixed the problem, after taking out the board and testing it with another source of power we discovered the board was fine, it ended being the connector i have highlighted here had the blue and white wire wiggle lose somehow, prob during transportation... thanks everybody for you help
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Carlyle, SK
Hopkins, MN