That's good to know another thing to toss in the mental archives.

I’m away from my games at the moment - is that coil in solenoid group 1-8?

I have an issue with a project Gilligans I bought with no boards, I installed a new Rottendog driver board ... it blows the 1-8 fuse on power up. Been chasing my tail on it for ages.

rd

Also affects some revisions of the original Williams power board.

https://www.pinwiki.com/wiki/index.php?title=Williams_WPC#J122.2FJ124.2C_pin_1_Connected_to_Board_Ground

Is there a revision number on your rottendog driver board?

Mental note taken. I don't usually tighten those lower screws much anyway, but I'll go even lighter on RD boards.

I've had a similar thing happen on a factory WPC video board. Also documented on pin wiki.

https://www.pinwiki.com/wiki/index.php?title=Williams_WPC#Fuse_F601_or_F602_blows

Hm... the RD dog board I put in my TZ when I thought the original board was broken almost immediately started blowing the fuse in line with the left playfield magnet. I wonder if this is why...

Wow! Extremely sloppy routing all over that 2"x2" photo. And that was sold to people?

some minor adjustments could have made it much better

you had only one job.jpg

The issue has been added to pinwiki:

https://www.pinwiki.com/wiki/index.php?title=Williams_WPC#Q26_Transistor_.26_Coil_Locking_On_with_Rottendog_Driver_Board

If anyone has any additional information about this issue or if it is spotted on other board revisions, please feel free to add the information here and/or to pinwiki.

I have one of these boards but it must be a newer version and those traces are rerouted and well clear of that mounting bracket. It is with a friend that does service calls in case he needed a board. I'll see if he can get the revision number off that board and I can post a picture of what it looks like.

Also, How does someone get setup to contribute to PinWiki? I've gotten some people to add things that I've found in the Bally section but could add things when I find them as well.

Just register for an account on the site--there is a "request account" link in the upper right. The direct link to that is here: https://www.pinwiki.com/wiki/index.php?title=Special:RequestAccount

The site owner then approves new registrations (be patient, it may take a few days).

That could have been my problem when I tried one of those in my whitewater. Right after boot up, it would just fry a fuse. Can’t remember right now which one, but it was for solenoids. after sending it back to them a couple times and no difference, I just got a refund. I kind of wish I still had it to look at that.

Thanks for the tip. The knock down (solenoid #12) on my Terminator 2 locked on a few months ago, burning out the fuse, then coil. My tech came over and tested all the transistors (Q52) but it was good. We were stumped but I just wound up cutting the wire. Other than that my machine is working fine. Nobody else notices, but I know.

I am wondering if this is the issue. The other thing I wonder about is the diode. I went to the Rottendog site, but they no longer host the schematics for the driver board (WDB089). I wonder a.) if anyone else had this problem, b.) which diode (what kind? 1N4004?) these transistors are paired with, c.) the resistors don't usually fail do they? and d.) if anyone has the schematics for this board?

is there a way to identify this without taking the board out? I am not being lazy but there is always the chance of something else breaking, lol.

J122 is the only one connected in my board right now, 123 and 124 do not have anything on them.
I have a T2 game and it all works well

I am having isuues with my WDB089 Rottendog in my Demolition Man pinball, just started out of the blue.
Rebooting at power on. But last night I played 2 player 5 ball game with no issues, then started to reboot in attract mode.
I bought the board in July 2021 but looks like the board sticker states it was made Dec 2020.
Is this a newer Revision board that took care of that trace grounding issue?

Here is link to a video of the resetting issue:

PXL_20230723_152948977 (resized).jpg

Have you measured the voltages at the test points on the driver board? Have you measured the voltage at your MPU? It may not be a board issue.

I had an issue on a Judge Dredd that was rebooting. Had a solid 5V on the driver so that was fine. Had just under 4.6V at the MPU. Ended up repinning the power connector at the MPU and driver which cleared up the issue. If you are losing power definitely check the connectors. I would suspect those before the board.

I have one of these drivers and it works well. It often gets loaned out if I am rebuilding an original WPC driver for someone so they can still enjoy their game.