williams dot matrix black area

[moc1946]

hi,  just bought 3 "as is" Williams' dot matrix slots to add to my 3 other Williams, i have them all working, one needed top power supply.  i do have a question on the dot matrix display.

on two of the new machines when i power up, the dot matrix display has a fairly large black area in the middle of the board, BUT, within 2 or 3 seconds it fills in with the standard orange pixels and seems to be OK until the next power off/on sequence.

is this a harbinger of display failure to come???  i have had 8 Williams machines with DMD and never saw this happen.

any help would be appreciated.

mike  moc1946

[cfh]

first make sure you are running 5.13 or 5.14 version
of the top box OS at XU10 (27010). the earlier versions of
the XU10 have problems and will act as you describe.
Also you may want to consider using an ATX power supply
for the top box power instead of the original. It's a good
inexpensive solution and makes the whole system a lot
more reliable.

[moc1946]

i love thiss forum, maybe i'll be able to contribute something and not just get.  thanks for the reply, will check the version and i am in the process of setting up a new power supply as described here in.

thanks again  moc1946  mike

[knagl]

Mike-

Welcome, we're glad to have you here.   

Since you brought up contributing, the site's web hosting bill is funded by donations from users like you and me -- one way you can contribute to the site as a "thanks for the help" is to donate a couple of dollars to the hosting fund.  Your donation doesn't have to be huge -- every little bit helps.  There's a "PayPal" donate button at the bottom of every page, and every dollar is apprecaited and helps to keep this site running for users to find answers to their slot machine questions.   

[moc1946]

no problem with a donation, will use paypal today.

moc1946  mike