New Life Games LLC

**Reel Slots** Gaming Machines => Other Reel Games => Topic started by: DavidLee on March 08, 2015, 12:09:07 PM

Title: Jennings 1975 3-line circuit board
Post by: DavidLee on March 08, 2015, 12:09:07 PM

Just finished replacing all the acid eaten trace on a Jennings 3-line PCB.
Looking for help to re-solder a jumper wire.
On the other side of the board one jumper wire was separated by battery acid.
Hope to find out where this wire needs to be soldered. I have a general location due to the length of the wire
and maybe it was close to the original position. The still connect wire and resistor are on IC #82
If someone has info and or a photo of the wire location it would be very much appreciated.
I've attached some photos to get a better picture of what I need to accomplish.
Thank you for helping to get this machine up and running again.     

Title: Re: Jennings 1975 3-line circuit board
Post by: ramegoom on March 08, 2015, 05:45:10 PM

Not sure if this will help. Here's a later PC board, a few years younger than yours.

Title: Re: Jennings 1975 3-line circuit board
Post by: DavidLee on March 08, 2015, 06:36:56 PM

Thank you so much! I'm going to look this board over and hopefully I might get a clue to where this jumpe would go.
Thanks again
David

Title: Re: Jennings 1975 3-line circuit board
Post by: knagl on March 09, 2015, 10:10:22 PM

Here's a link to the gigantic photo that ramegoom posted earlier, if you need a blown-up image.  Joey reduced the size of the one posted in this thread because it was causing problems when people tried to open the thread.  Here's the link to the super-sized version if you need it:

http://www.ramegoom.com/john/jennings400/logic002.jpg (http://www.ramegoom.com/john/jennings400/logic002.jpg)

Title: Re: Jennings 1975 3-line circuit board
Post by: DavidLee on March 11, 2015, 03:47:06 PM

Thanks for the link. 400 PCB is a little different than the 3-line board and has a lot more jumps.
I really appreciate the help with photos and links, but it looks like I'll have to find the exact same board.
So I'm still looking for a photo of the underside of the Jennings "3-line PCB"
Thanks again for the time and effort.

David

Title: Re: Jennings 1975 3-line circuit board
Post by: edtruman on July 01, 2015, 09:34:07 PM

Here is a picture of the jumper wire


it goes to 120 pin 13

I hope this is helpful !

Title: Re: Jennings 1975 3-line circuit board
Post by: DavidLee on July 02, 2015, 06:08:03 AM

Wow!
This looks to be identical to the board I've been working on.
Did a lot of repair work on the board , but wasn't sure where the loose jumpers should be soldered.
Also a possibility of missing jumpers.
It's been awhile since I've worked on it due to lack of information.
The photo you sent just might solve the remaining issues.


Thanks again
Dave