Important Covid-19 Information:

Due to Covid-19 concerns and for the sake of our employees, all warranty packages received will be quarantined for at least one week before being un-packaged by our receiving staff. Customers registering and submitting warranty claims should expect longer than average turnaround times due to the aforementioned as well as current limitations on human resources. TCS is committed to the safety of our employees and customers and are working hard to ensure orders and warranties are handled in a safe but timely manner. We appreciate your patience during these trying times.

Watch the video below as Dan walks you through submitting a warranty.



Warranty Submission Rules

  • All Warranties must be registered prior to mailing – this includes dealer/distributor submissions. If you do not register your warranty, it will be declined in the event efforts to contact you fail.
  • Multiple products may be registered under the same RMA number (10 Max).
  • Decoders, Motherboards, and Keep Alive® are covered under a ONE YEAR “goof-proof” warranty which covers manufacturer defects, burns, shorts, physical damage, and operator error. The decoder will be repaired or replaced within one year of manufacturing even if the operator accidentally damages it.
  • Decoders determined to be out of warranty (CVs 250, 251, and 252 read to be more than 1 year from date of submission) will be charged an upgrade fee.
  • Non-sound decoders determined to be outside of the warranty period may be replaced for $16 USD.
  • TCS will honor the warranty on decoders determined to be out-of-warranty IF a valid receipt of purchase within the last 90 days can be provided. The replacement fee will be waived in the event a valid receipt can be provided.
  • Do not include harnesses or Keep Alive® units with your decoder unless you are submitting a warranty on a Keep Alive® product.
  • Products submitted may NOT be exchanged for different types of products unless the product submitted has a newer revision or has been made obsolete.

Warranty Submission Process

  • If you are unsure if your decoder is damaged, or have any questions regarding its performance, visit our Technical Support section, follow our Troubleshooting Guide, or contact technical support.
  • If you are not a registered customer who has purchased directly from TCS or submitted a warranty in the past, you will need to Create an Account and enter your contact and shipping information.
  • After you have created an account, or if you have one already, enter your e-mail address on the registration page and the system will pull up your information automatically. If you have recently moved, changed your name, or use a different email address then when you originally created your account, you must update your information prior to registering your return. TCS is not liable for returns mailed to outdated addresses. You can update your account information by logging in to your account and clicking your name. Then chose the options to Edit Your Personal Info or Change Your Address.
  • Select the number of products being submitted (10 products maximum per RMA).
  • Use the drop-downs to select the and Product Type (such as a Motherboard or Keep Alive) or Scale, then select the specific product.
  • If you are including a motherboard in your return please submit it as a separate product for accuracy in warranty tracking. Watch the video above if you are unsure how to do this.
  • Use the drop-downs to indicate if burn damage occurred and which functionality failed.
  • Enter a short description of the conditions surrounding the failure in the comments section. If you are submitting a locomotive, please note all relevant information such as model manufacturer, loco type, and road number for proper tracking.
  • Verify all the information you have entered, including your email address. Once all of the fields on the form have been completed, the “Submit” button at the bottom of the page will become clickable.
  • After pressing “Submit” you will be re-directed to a page with your Returning Materials Authorization (RMA) number. This page must be printed and included in its entirety with the items for return. We recommend keeping an additional copy for your records.
  • You will receive automatic updates from our system via email throughout the process. Examples include date of receival, repairs/replacement processed, and return shipping confirmation with tracking.


  • When submitting a warranty for sound decoders, you will be automatically prompted about upgrading your decoder. In order to proceed, you must select either YES or NO. The fee for a WOWSound decoder upgrade is $25 USD plus return shipping.
  • A WOWSound decoder of the current production version would not be eligible for an upgrade. Regardless of this fact, you must make a selection YES or NO. Ineligible warranty upgrades will be refunded.
  • If you click YES to the upgrade option, you will be redirected to the WOWSound Upgrade registration page. If you click NO to the upgrade option, you can proceed as a normal warranty.
  • If you submit and pre-pay for an upgrade, your order confirmation will be emailed to you, and will contain your RMA ("Order Number #####"). This page is to be submitted instead of the typical RMA form.
  • If you register for an upgrade, you must mail your product to TCS as described below in "Proper Packaging Techniques."
  • It is not necessary to fill out an additional warranty or second RMA on upgrades or warranty upgrades. Use only the RMA and form emailed to you for upgrades.
  • Version 3 and older WOWSound decoders are no longer covered under warranty by TCS. Version 3 and older decoders must be upgraded. Verison 4.0 WOWDiesel will also be required to be upgraded without a receipt of purchase within 60 days of the warranty registration date.
  • If you submit ANY decoder for warranty service, it will be analyzed for its age. You will be billed for the fee(s) for an upgrade on any decoder(s) not covered under warranty. Any ineligible upgrades will be refunded.
  • The fee to upgrade any non-sound decoder not covered under warranty is $16 USD.

Proper Packaging Techniques

  • Decoders MUST be shipped in a small box – no envelopes. TCS is not liable for decoders lost or destroyed in the mail.
  • It is highly recommended but not required that you add tracking to your package in the event it is lost in the mail so that it can be located if needed. TCS is not liable for lost mail.
  • Warranties are to be shipped to the P.O. Box listed on the RMA form which is also listed on the Contact page of our website.
  • The entire RMA form must be included with the decoder.


If you have read and agree to these rules, you may click the button below to continue:

Submit a Warranty