Obtaining Service

Our buzzer systems are designed
for many years of service,
but at some point, service may be needed.

#1Please call us before returning your system (our phone number is listed on our “contact us” page).  Let’s discuss the malfunction and determine which parts need to be returned for repair.

In many situations, the entire system does not need to be returned.  However, if your system “has seen better days”, please consider an overhaul (see details below). We can take care of the immediate problem without you having to diagnose it, and we can also inspect for other problems, too.

#2: If we determine parts need to be returned, please ship parts to the address listed on our “address” page.  We will  repair and return the components as quickly as possible.

#3: PLEASE include a note with whatever you return summarizing the problem and the name and address where we should send the repaired part.  Thank you!

#4: When making a shipment to, we suggest using UPS Ground, FedEx Ground, or Priority Mail.

Hand-Held Button Repair

Hand button clicker for quiz jeopardy games lockout repair

Your hand-held buttons can be repaired.
Very economical … Less than 1/2 the price of a new button.
Click the button for more information.

Grey Cord Repair
quiz lockout cord cable repair broken tabs

When one of our systems has a problem, 95% of the time the problem is a worn-out (or damaged) cord.  If your system is malfunctioning, please make sure all of your cables are clicking securely into the controller and the player boxes.

Your grey cords can be repaired.
Very economical.
Click the button for more information.

Light Bulbs

Light bulbs in our products can be easily replaced.

Replacement bulbs can be found on our Replacement Parts Page. Click here


If your system is three years old or older, we recommend that you return it for an overhaul.

Our goal is to rejuvenate your equipment to like-new condition – you’ll get many more years of use from your system.

The experts at NED can rejuvenate your system. Scroll down this page or click button for full details!


We have a dedicated page for the documentation on all of our products. Click here to visit.

Upgrades & Tweaks

Adding Hand-held Button to “Traditional” Player Box (Black Box)

For less than the price of the hand-held button, you can add this popular option to your “traditional” player boxes (the “black” player boxes shown here).

Click on this button for more information.

Powering your system With a Battery

Added September 2020:
Our equipment is designed to be powered by a power pack that plugs into an AC wall outlet. But if an outlet is not available, there are other ways to power your lockout system.

Here is our suggestion.
If you have a solution you would like to share, please let us know. We’ll post it here. Thanks!


All of our quiz-lockout products (lockout systems and timers) require at least 12 volts to operate. Safe, economical, rechargeable 12-volt battery packs are used in many applications, including photography. These batteries will also power your quiz-lockout system.

Here is an overview of what’s needed:

quiz lockout buzzer battery power

As shown in the picture, the Lockout System requires a battery. And also as shown, since there’s a difference between the connectors on the battery and the lockout system, we need an adapter.

RECOMMENDATIONS does not stock these parts, nor do we profit from the links we’ve listed here. These recommendations are for the convenience of our customers.

BATTERY: TalentCell Rechargeable 12V 3000mAh Lithium ion
Price: $23
Amazon Link: [click here]
Comment: This battery has more than enough power to run a lockout system (and a timer, too) for several hours before it needs to be recharged. Larger batteries are available that will run the lockout system for even longer.
Technical Note: the center pin on the power jack can be positive or negative – our equipment accepts both polarities.

CORD: Valley Enterprises 1 Foot Male-to-Male Adapter Cord
Price (Sept 2020): $7.50
Amazon Link: [click here]
Comment: Other cords are available in varying lengths and prices. The important thing to observe when picking a cable is the dimensions of the plugs.
Also note: some batteries come with a cord, so purchasing a separate cord may not be necessary.

ADAPTER: DC Power Plug Adapter: 2.1mm jack -to- 2.5mm plug
Price (Sept 2020): $7
Amazon Link: [click here]
Comment: none

If you have any questions, please call or email.

Customized Lockout Systems

We can design and build a customized system for you.
Please click button for more information.


Overview – Prices

We’ll restore and rejuvenate your system to top running condition, ensuring many more years of use. We offer a complete overhaul for every product we’ve sold. We want your equipment in top condition. It doesn’t matter how old or beaten up your system is!

Overhaul prices and services vary based on the product. Find your system in the following chart to determine price and services included.

What’s Included in an Overhaul?
$7510-Player Console
Quiz lockout system for up to 10 players. Players buzz in with hand-held buttons.
* Power pack inspected (replaced if worn)
* Hand buttons inspected/updated
* Extension cords replaced if worn
* Long-Life Bulbs installed
* Minor repairs (bulb replacement, etc)
* Complete functional test
$95Slap-Pad System
Quiz lockout system for up to 10 players. Players buzz in with slap or press pads.
* Power pack inspected (replaced if worn)
* Slap-Pads inspected, cords tested
* Extension cords replaced if worn
* Long-Life Bulbs installed
* Minor repairs (bulb replacement, etc)
* Complete functional test

“Who’s Next?”
player boxes for quiz games press button on box
* Power pack inspected (replaced if worn)
* Player boxes fully inspected
> buttons replaced if worn;
> long-life bulbs installed
* All cords inspected and replaced if worn
* Minor repairs (broken connectors, etc)
* Complete functional test
“Team Box”
Quiz game lockout system with team box uses hand buttons.
* Power pack inspected (replaced if worn)
* Hand buttons inspected/updated
* Grey-cord plugs replaced
* Long-life bulbs installed
* Minor repairs
* Complete functional test

CM-400 quiz lockout game box waiting to buzz in
* Power pack inspected (replaced if worn)
* Hand-held buttons inspected and updated
* All light bulbs replaced w/ long-life bulbs
* Grey cords (short & long) repaired
* Rubber feet replaced (if needed)
* Minor repairs
* Complete functional test
How Long Does It Take?

We prioritize overhauls; our goal is to have your system back to you less than two weeks after we receive it. To get a better idea of how long an overhaul will take, please give us a call. If you need quick or “guaranteed timely” service, please call and let us know.

What’s Excluded in the Price of an Overhaul?
  • Replacement of missing parts
  • Repair of components that have been abused (cracked panels, boxes, etc)
  • Repair/maintenance of carrying case
  • Shipping the system back to you is only $10 (continental USA)

If we find anything that requires service not included in the price of an overhaul, we’ll contact you to discuss options.

Overhaul – What Do I Need to Do? — Forms

Package your system and send it to us.

  • Please include all the parts that are part of that system.
  • Pack it so it does not rattle!
  • If something is malfunctioning, please include a note with a brief description of the problem.
  • Include the overhaul order form (see below) — this is where you list your contact information.
  • (optional) If you have a purchase order, include a copy of the PO, too.

(OPTIONAL) If you need a credit card form, click on this button:

Shipping your system for Overhaul

Our shipping address (for postal, UPS, and FedEx) is at this link: CLICK HERE

We recommend UPS Ground for all shipments — UPS is both dependable and economical. The post office is also fine, but their parcel service is generally slower, and their Priority service is usually more expensive than UPS or FedEx.

For your protection, please insure the shipment appropriately.