I just joined the club last night. I picked up a project HH that will need a bit of work to get going. I am going to attempt the multi-ball and speech conversion - if anyone has any experience with this, I'd love to hear about it.

If anyone is interested, I've started a thread to document my Haunted House restoration. I also hope to add Multi-ball and speech.

https://pinside.com/pinball/forum/topic/haunted-house-resto-plus-multiball-and-speach

I know it's a longshot, but I'm still looking for an unbroken 'secret passage' plastic. Please contact me if you know where to find one.

Oh yes, asked about it while I was buying some other parts.

Is anyone here running the Pascal board in their Haunted house? If so, I'm curious if your 'trap door' stays open during gameplay. It's strange - the trap door closes after a game is over (and when no game is being played) so I know the mechanicals work. However, as soon as you start a game, the trap door opens and remains open for the duration of the game.

Does anyone have any thoughts/suggestions?

Thanks for the suggestion. However, I'm fairly certain it's not the driver board. The trap door does open/close properly - it's just always open during the game.

Thanks - I'll dig into the settings and see what I can find.

I'd try repairing the pop-bumper boards first. Honestly, they are pretty much the easiest PCB you'll find in a pinball machine. I recently completed a 'players level' restoration, and was able to repair those boards without any problem. https://pinside.com/pinball/forum/topic/haunted-house-resto-plus-multiball-and-speach

I recommend you read the "Vid's guide to restoring playfields" thread here on Pinside. It's full of great info. One of the important lessons I learned (the hard way) is - after you've cleaned the playfield the best you can, lay down a sealer coat of clear before you attempt any touchups. Without it, the paint will soak into the bare wood, and your colors will be off when it's cleared. Also, you will want to remove the plexi window to the lower playfield before spraying any clear.

Knowing how to re-pin connectors is perhaps the most important thing to master. Bad connections/connectors probably account for most of the issues seen on modern SS machines. I make a point to try and re-pin EVERY connector, as youi will save a TON of time down the road trying to chase intermittent issues.

GOOD LUCK!!

It's a lot of work. First, you have to be running the PASCAL all in one board. All the rules for multiball are on that board. Then you have to add new switches, relays and new ball troughs to handle the extra balls. There's also an extra relay that's needed.

All the details of the mod can be found here: https://www.flippp.fr/media/pdf/HAUNTED_HOUSE_MULTIBALL.pdf

I'm impressed!! Great job on the sides as well. I'm super glad that old Haunted House went to someone who has given it such a great home.