Cleveland, OH
Is this T2?
(Topic ID: 328617)
Linked Games
Dirty Harry
Williams, 1995
Topic Gallery
You're currently viewing posts by Pinsider eyeamred2u.
Click here to go back to viewing the entire thread.
Quoted from Robertbucs:- Hello, I replaced BR1 and BR 2. All TPs test out good and now Led 1 and Led 6 are lit but I still get the check F114 and F115 message but at least now I'm able to get into the menu.
-I also now get a broken gun message and all the balls load up in the shooter lane, all four. I did a switch test and I'm getting T3-11 thru 17 "GRND Short."
- D1 and D2 Diodes test out good and all fuses test out good. I also tested D2 to C1 and it tested for continuity.
- What should I try next?
Thank you for all you've done top help me with this problem. Hey, I learned how to replace bridge rectifiers, first time.
Robert
Almost sounds like a blown chip(s) on the MPU U20 and/or U14 as well. Check for corrosion on the board and on connectors. Check for broken wires on J207. Review the attached pic for reference.
WPC-089MPULayout (resized).jpg
Quoted from DumbAss:Try disconnecting J5 from the 16-opto board and see if the short goes away.
Good call Victor.I always forget that board has LM339's as well.
Quoted from Robertbucs:Hello, I unplugged it and I still get shorts on like Row 1 and Row 3 and the F114 -F115 fuse message. Thank you helping me troubleshoot.
Robert
Next, plug that board back in and unplug the trough boards, I believe there are 2 boards in that game. Unplug 1 at a time if they are wired so you can and see if the error goes away. Now you have ruled out Column 3 by unplugging the opto board, so lets look at Column 1 switches/components
DH_Matrix (resized).jpgThis shouldn't make a difference. The ball trough boards in this machine are driven (controlled) by the 16-opto board. These trough opto boards are just plain LED transmitters and phototransistors. The sensing logic is on the 16-opto board. This is in contrast to the wide body machines (e.g. IJ or STTNG) where the ball trough receiver board has the sensing logic.
Thanks Victor, Never too old to learn.
Quoted from DumbAss:This shouldn't make a difference. The ball trough boards in this machine are driven (controlled) by the 16-opto board. These trough opto boards are just plain LED transmitters and phototransistors. The sensing logic is on the 16-opto board. This is in contrast to the wide body machines (e.g. IJ or STTNG) where the ball trough receiver board has the sensing logic.
Start by checking the +12VU and +12VR test points. Also check the corresponding LEDs for them. Consult the Pinwiki (https://www.pinwiki.com/wiki/index.php/Williams_WPC#LEDs_and_test_points_on_WPC-089_Power.2FDriver_Boards) for more information.
After reporting those values, please remove all the balls from the machine and post an image of the DMD after entering switch edge test (T.1). It should be an image of the active switches in the 8x8 switch matrix. If you post an image with J5 connected and disconnected for contrast that may help.
Thanks Victor. I kinda always count on you to jump in, as I was unaware of that difference between the logic.
Promoted items from Pinside Marketplace and Pinside Shops!
You're currently viewing posts by Pinsider eyeamred2u.
Click here to go back to viewing the entire thread.
Reply
Wanna join the discussion? Please sign in to reply to this topic.
Hey there! Welcome to Pinside!
Donate to PinsideGreat to see you're enjoying Pinside! Did you know Pinside is able to run without any 3rd-party banners or ads, thanks to the support from our visitors? Please consider a donation to Pinside and get anext to your username to show for it! Or better yet, subscribe to Pinside+!
