Twilight Zone
Bally, 1993You're currently viewing posts by Pinsider chrishibler.
Click here to go back to viewing the entire thread.
Quoted from TheLaw:I could tell you I reflowed the solder on J102(?)
Probably J101. That's the source for the eventual 5VDC power.
--
Chris Hibler - CARGPB #31
http://www.Team-EM.com
http://webpages.charter.net/chibler/Pinball/index.htm
http://www.PinWiki.com - The Place to go for Pinball Repair Info
That "hack" the you've pictured is getting around the voltage selection jumpers. Those jumpers (on the other side of the plug) are used to select line voltage. This let WMS sell games in countries that used 230V line voltage systems. It's a hack, but it's OK.
Since you are measuring good voltage on the pads of the RD driver board, I wouldn't worry about what you are measuring at the input connectors. BTW, that's AC voltage at the connectors. You have to measure from (for instance) one red wire to the other red wire, or one blue/white wire to the other blue/white wire.
71V is normal for coil power. You'll see that in every WPC game even though WMS documented it as 50V.
You still need good connections at the board, and this is what you "fixed" previously be reseating them. Get a good crimp tool, the right sized housings, and some .156 crimp on pins (you'll need the one for larger wire sizes), and go to town. Ed at GPE has everything you need.
The board-to-board wire harness connections are very important. TZ also has a "Z Connector" that is often problematic. You'll see it between the driver and MPU boards.
--
Chris Hibler - CARGPB #31
http://www.Team-EM.com
http://webpages.charter.net/chibler/Pinball/index.htm
http://www.PinWiki.com - The Place to go for Pinball Repair Info
Quoted from T-800:My dilemma - is there truly something wrong with these games or is it just my shitty power? Seems weird that they reset in my house but not out at other locations...
http://www.pinwiki.com/wiki/index.php?title=Williams_WPC#Game_resets
Check that out...step one might be illuminating.
--
Chris Hibler - CARGPB #31
http://www.Team-EM.com
http://webpages.charter.net/chibler/Pinball/index.htm
http://www.PinWiki.com - The Place to go for Pinball Repair Info
You're currently viewing posts by Pinsider chrishibler.
Click here to go back to viewing the entire thread.
Wanna join the discussion? Please sign in to reply to this topic.
Great 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+!
This page was printed from https://pinside.com/pinball/forum/topic/tz-dying-in-middle-of-game?tu=chrishibler and we tried optimising it for printing. Some page elements may have been deliberately hidden.
Scan the QR code on the left to jump to the URL this document was printed from.
Chesterfield, MO