# Houdini Stage Calibration

**Source:** American Pinball  
**Type:** video  
**Published:** 2023-05-05  
**Duration:** 2m 15s  
**Beat:** Pinball

**URL:** https://www.youtube.com/watch?v=IsYKOm7JI2k

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## Analysis

Dave Brennan, tech service manager for American Pinball, provides a technical tutorial on calibrating the stage mechanism in Houdini Master of Mystery. The video addresses a specific issue where balls entering the stage fail to activate properly and trigger ball search, caused by the internal captive ball being positioned too low. The fix involves navigating to the utilities menu and running the stage calibration routine to reset the servo/opto limits.

### Key Claims

- [HIGH] When a ball enters the stage and doesn't activate, the issue is the captive ball inside the stage isn't positioned high enough — _Dave Brennan explains the root cause of the stage malfunction and provides direct troubleshooting guidance_
- [HIGH] The stage calibration routine can be accessed via utilities menu > stage calibration and run with the start button — _Technical step-by-step instructions provided by American Pinball's tech service manager_
- [HIGH] The calibration process moves the captive ball and finds servo/opto limits to establish the topmost position — _Direct explanation of what the calibration routine accomplishes_

### Notable Quotes

> "if you ever have a ball go into the stage and it just sits there and doesn't do anything it goes into ball search the issue is the captive ball inside the stage isn't up high enough"
> — **Dave Brennan**, early in video
> _Identifies the core mechanical issue affecting Houdini's stage mechanism_

> "what you have to do is go into the utilities menu of the game so on the screen to get there from the main screen you go into utilities at the far right and then you scroll over to Stage calibration and then you hit the start button"
> — **Dave Brennan**, mid-video
> _Provides exact navigation path for accessing and running the calibration routine_

> "it's going to move the captive ball inside and it's going to find the limits of the servo or of the optos and tell it where the top most point is"
> — **Dave Brennan**, mid-video
> _Explains the technical mechanism behind the calibration process_

### Entities

| Name | Type | Context |
|------|------|---------|
| Dave Brennan | person | Tech service manager for American Pinball, providing technical support and calibration guidance for Houdini |
| American Pinball | company | Pinball manufacturer producing Houdini Master of Mystery; Dave Brennan is their tech service manager |
| Houdini Master of Mystery | game | American Pinball's flagship game featuring a stage mechanism with a captive ball that requires periodic calibration |

### Topics

- **Primary:** Technical support and maintenance, Stage mechanism calibration, Houdini hardware troubleshooting
- **Secondary:** Servo and opto limit setup

### Sentiment

**Neutral** (0) — Straightforward technical instructional content with helpful, professional tone from American Pinball's service manager. No contentious or opinion-driven commentary.

### Signals

- **[product_concern]** Stage mechanism on Houdini appears to have a recurring calibration issue requiring users to manually adjust the captive ball position via utilities menu, suggesting either a manufacturing tolerance issue or a need for periodic maintenance (confidence: medium) — Dave Brennan creates dedicated tutorial video for a specific malfunction scenario, indicating it occurs frequently enough to warrant official technical guidance

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## Transcript

Tech tips I'm Dave Jeff Brenner the tech service manager for American pinball I just wanted to make this quick video to show you how to calibrate your stage mechanism on Houdini so if you ever have a ball go into the stage and it just sits there and doesn't do anything it goes into ball search the issue is the captive ball inside the stage isn't up high enough for the ball that you put in there to be able to see it so what you have to do is go into the utilities menu of the game so on the screen to get there from the main screen you go into utilities at the far right and then you scroll over to Stage calibration and then you hit the start button for it to start and so what that's going to do is it's going to move the captive ball inside and it's going to find the limits of the servo or of the optos and tell it where the top most point is and then it's going to say that it's going to it's complete and then you just back out of that go back to your home screen and then you can try it again when you start a game it's gonna it should be able to send this ball now hopefully that was helpful we'll catch you next time

_(Acquisition: youtube_auto_sub, Enrichment: v3)_

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*Exported from Journalist Tool on 2026-04-15 | Item ID: 0f7becdd-20a8-47c6-9b48-8ada293aba89*