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| | |-+  WMS 550 board 1.5 doesnt start up
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Author Topic: WMS 550 board 1.5 doesnt start up  (Read 5626 times)
ggutierrez020
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« on: September 03, 2009, 02:14:32 PM »

hi i have several boards wms 550 v1.5 that desnt start up and i have  notice that the led array that form the number 8 doesnt turn off it is on all the time,  the eproms game are ok i have tested in another board working and in a good board the led array comes off when i turn on the machine and then hear the "bong"

thank you[/size]
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Slotmaster
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« Reply #1 on: September 03, 2009, 02:38:50 PM »

75% of the time its socket expansion or smoke / dirt on the XU-12 CPU Chip

Just remove, use contact cleaner and reseat.

Then try the board again


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Bettor Slots
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« Reply #2 on: September 03, 2009, 06:06:15 PM »

And the other 25% of the time you need a new battery or hitting the yellow reset button on the board will do the trick.
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ggutierrez020
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« Reply #3 on: September 05, 2009, 06:24:20 PM »

i did your suggestions but nothing....   i have another that the led array turn off and i hear the "bong" but nothing in the lcd monitor, the lcd is in good condition, i aplied ram clear chip and i hear the "bong" but the same i cant see anything in the lcd
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