Still working on my Black Knight. Broke down and bought a Rottendog board

Game boots with no problem. First ball ejects into shooter lane. When the first ball drains the ball is pushed into the trough but the game will not register second ball in play. The multi ball also is not functioning. I can manually place three balls in the top playfield trough -
all three lights show balls locked - but no multiball.

Switch test shows no stuck switches and solenoid test also checks out. Manually activating the rollover switches with a ball show all switches registering properly.

It appears all switches in column six are out. Double checked connections for switches in the column and do not see anything. Also checked connection to rottendog board. It looks okay as well.

Up working on the pin this morning. Quick recap - game starts and can put first ball in play. When the ball drains it will not advance to second ball in play and kick the second ball into the shooter lane. The out hole does, however, kick the ball into the shooter trough. I have also noticed that if I place three balls in the the upper trough I cannot activate multiball. I was thinking it might be a switch matrix problem.

Column two has the three trough switches and the out hole switch. All switches test okay in the switch test. I checked continuity from backbox connector to each switch in the column - no shorts detected. I also connected a wire to the 2j2 connector for the column and in diagnostic switch test mode touched each of the corresponding 2j3 pins. All switches worked. I did the same tests for column six since it controls switches for multiball. Everything checks out okay.

Thoughts?

Scwhaggs ,

Thanks for the response. I entered switch test and manually loaded three balls one at a time into the trough. Switch 17, followed by18, followed by 19 all registered correctly.

I pulled 2J2 from the rottendog board. I checked continuity on green/blue pin 5 which is the wire for columns six - stuck a paper clip in the connector for green/blue connection and five and have continuity from the backbox all the way through to switches 41 -46 in the switch matrix.

No. The bonuses are not counted up. The drain will kick the ball into the trough but not eject a ball into the shooter lane. Ball in play stays on "1".

I pulled the diodes and all check okay.

Tried on more thing. I have a Rottendog power supply in my Blackout. Pulled it and installed it in the Black Knight. No change.

Schwaggs,

Thanks. I am also going to re-pin all connectors.

I will reach out to Jim at Rottendog. I will keep you posted.

That is exactly the same problem I am having. I too am having sound problems - I have a new swemmer sound board. I get speech at the start of a game but no speech or sound while the ball is in play. I have aRottendog board in my Blackout and will swap it out to see if it is board related.

I will keep you posted.

I can indeed confirm it is a bad board. The mpu327 from my blackout works fine in my Black Knight.

I reached out to rottendog and am waiting on a call back from Jim. I was able to speak with someone. I informed the Arcadeshop where I bought my board. They were also going to contact rottendog. I told rottendog at least one other person was having a problem and provided a link to this post. I will keep the post updated.

I talked briefly to someone at Rottendog yesterday afternoon and am waiting for a call back from Jim. It is a ROM issue and Jim can send a new one I am good with that. I could remove the ROM from my Blackout and put in the new board to test it. Unfortunately I will not be able to get to it until next Friday - ugh.

Any luck taking with Rottendog and getting your board replaced? I talked with someone- not Jim- briefly but have not been able to get them to return my call or follow up emails.

That is not good. Obviously several bad boards out there. Did Ksarcade send you a new one?

You are correct. I am hoping to talk with Rottnsog today.

I flaked with J Rod again today at Rottendog. He again took my contact information but o one called me back. He said thre was a design team looking into the problem. Let me know if you learn anything. The distributor I bought the board through suggested I work through Rottendog.

Update -

Rottendog is sending a replacement part for the board. Jim left a message saying they had figured out the problem and offered to send a part to resolve the issue or refund the cost of the board. The part ships today. He did not way which IC was causing the problem.

Yes, I received it this week. It did not resolve the problem. Still no ball in play advance and no sound. Frustrating.

I swapped my old board from 2015 into the BK and installed the new revision board in my Blackout. I haven't had time to trouble shoot the old board in the BK but it seems to work. At least there is sound and the ball in play advances. The new board seems to work fine in the Blackout.

The Arcadeshop replaced my MPU327 board. Great customer service and very responsive. The owner's name is Steven Gregory. I never did get it sorted out through Rottendog. The flashed IC Rottendog sent did not solve the problem. I have not installed the replacement but will post back when I do.

Contact Steve at Arcadeshop. He is very easy to work with. I have not installed the replacement board he sent so don't know if it has the same problem. I will try to install it this evening and post back.

Bad news. The new Rottendog board Steve sent me has the same problem - no sound and ball in play does not advance when a ball drains. This is an October 2017 produced board. It appears Rottendog has a systemic problem with this new version of the board. I am going to post these problems to the Rottendog forum with a link to here.

Yes, my earlier version board manufactured in 2015 out of my Blackout works in BK, just not this new version which was advertised by Rottendog as correcting any previous BK issues.

Rottendog sent me a newly flashed U36 rom chip but that did not solve the problem and I let them know. I personally am not aware of any other attempted fixes. The replacement board that Arcadeshop sent me last week was produced in October - the previous board was produced in August. I sent Jim and Rottendog sales another email to let them know that October produced boards still have the same issues but have not heard back.

Received an update from Rottendog. They have a local BK machine that they are using to troubleshoot the problems with the new board. Stay tuned.

I have not heard back from RD for a couple of weeks. The last communication I had was they were testing to try to resolve the issue.

Thanks for the post. I reached back out but had not heard anything.

I swapped out a Rottendog board from my Blackout. It works in my BK and the faulty board works well in the Blackout. Once the new board is released I will send it back.

Parts suppliers like k’s Arcade are stating that system 7 games are not supported.

Thanks for the update.