More Information

How to arrange for transponder repairs

  1. Email us and advise the type & quantity of transponders you intend to send for repair and from which country
  2. Ship transponders to us with a completed REPAIR FORM - you can use postal or courier service of your choice or we can arrange shipping via our DHL account to us

Download transponder repair form

We will advise you when your transponders arrives
Most repairs are completed within a few days
You will then be requested to make payment and transponder will be promptly dispatched

In the unlikely event a transponder is not repairable there is no charge for the attempted repair
Un-repairable transponders are not returned unless you specifically ask for return

Return shipping outside Australia

Australia Post LogoDHL logo

Tracked Air Mail *$29AU *$22US *€19 *£15 - delivery time 10-14 days

DHL express *$38AU *$28US *€25 *£19 - delivery time 4-5 days

*prices are indicative for parcels up to 500 grams (16oz)
Example: Four TranX2/3 transponders weigh under 500 grams

DHL is usually used for heavier shipments because it is cheaper and faster than postal service to most destinations

Return shipping within Australia

Express Post Logo

Express Post up to 500 grams *$10.50AUD

Express Post up +500 grams - 3kg *$14AUD

Next business day delivery to most destinations. Add a day or two if remote location

RC4 & AMBrc DP transponders are returned via Registered Post *$6AUD unless you specify express post

*prices are indicative

DHL pickup from you

DHL logo

We can arrange fast economical shipping of your transponder via our DHL account
Prices from most of the USA start at $35USD which is cheaper than USPS express service
Payment for this service is not required until repairs are complete

Transponder can be collected from you or you can drop it off at a DHL office or agent at your convenience. Someone is required to be present for collection during business hours as collection time is out of our control

Provide the following info for a quote or to arrange

  • Full address (if from work or business address include the business name)
  • Contact phone number (cell is best)
  • Date for collection (not needed if you are dropping off)
  • Pack only the transponder in a small padded bag (do not seal yet) and advise us of the dimensions of package. For lowest price package must weigh less than 500 grams (17oz)

With these details we can quote a definate price and book the shipment with DHL, email instructions and documents to you to print.

Bulk discounts

We offer bulk discount pricing on transponder battery replacement for all models

5 or more automatically receive a $4AUD discount

For larger quantities contact us for a very competitive quote

Payment methods

PayPal LogoBank Transfer

Payment is not required until after repairs are complete.

PayPal is an easy secure online method for payments up to $500AUD.
Don't have a PayPal account, no problem: PayPal accepts major credit cards.
Invoice will be in Australian dollars and PayPal will convert the amount to your currency.

Bank Transfer / WireTransfer
Can be done via your online banking, or arrange the transfer at your bank. Account details for the money transfer will be on invoice.

Checks and money orders from outside Australia cannot be used for payment

Can we fix your transponder

Repair success rate is extremely high and in the rare case that your transponder cannot be fixed there is no cost to you for the attempted repair

TIP: rechargeable type transponder check charger first.

If possible use a DC voltage meter to read the voltage on the terminals that make contact with the transponder or try a different charger.
For TranX type transponders the charger voltage should be 11-18 volts DC.
If voltage is low or there is no voltage at all then it is possible the power pack is dead and needs replacing.
Damaged cases, charging pins & mounting brackets can be replaced/repaired.
No matter how messed up the transponder is, we will attempt to fix it.

We CANNOT repair Mylaps Flex TranX transponders

Mylaps Flex transponderOnly Mylaps can service Mylaps FLEX transponders
They look the same as Tranx but have a WHITE base instead of black base

If light flashes rapidly on or off charge, the FLEX subscription has expired
FLEX transponders have an unlimited warranty via

Why transponders stop working

Battery failure is the most common cause of racing transponder failure
In rechargeable transponders this is indicated by the transponder not running or the light not giving the usual indications

Non-rechargeable transponders such as AMB130, TranX140, ChipX, Prochip have a long life battery sealed inside which wears out, therefore stop being detected by the timing system.

Care and charging of transponder after repair

A comprehensive information sheet will be sent with your transponders about how to extend the battery life, correct battery care and what the indicator light means

You will continue to use your existing charger and in most cases charging methods will remain unchanged.

If in doubt about any aspects of transponder care you are welcome to contact Transponder Services at anytime.



All repairs and batteries have one year warranty

In the rare case there is a problem under warranty you will be attended to in a prompt and friendly manner
We like our customers to be happy, so support is always available


Wow, what fantastic service!  I thought it would take much longer.
And thanks for the detailed info on initial charging, I have it going on its first cycle now.
This is exactly why I go to you instead of the guys who claim they can do it themselves.
Your customer service is extraordinary, your professionalism top notch, and I will highly recommend your work to all of my fellow competitors.

Bill Anderson - Poolesville, MD USA

First, I usually don't do this, but you are the exception. I ran a successful business for 27 yrs.
My staff said that all the details we addressed were the reason for our success.
Rarely do I see anyone that does such a high quality job, top to bottom.
When I first contacted you, you encouraged me to try alternatives.
Then your web site provided an info sheet for mailing, complete with label.
Your prices are very reasonable. Your service is outstanding - I was sent a photo of the return mailing label.
The item arrived 4 days before estimate. Three flashes turned into six.
Your information sheets provided are clear and concise. Whew!

Jerry - NY USA

Thank you very much for your arrangement and support!
We hope we could keep having good relationship with you in the future.

Y.Tsuiki International Division Tamiya Inc - Japan

Thank You for the extremely professional and economical battery replacement in our TranX260 transponders.
More than half of the transponders now charge to six days usage, one day more than when they were new.
I am highly recommending your services to all of our competitors using rechargeable transponders, and you can expect to hear from us whenever we have more transponders in need of battery replacement.
It’s been a pleasure working with you.

Bill - Illinous USA (Midwestern Council of Sports Car Clubs)

Thank you for the prompt professional service, the courteous and informative communication and for restoring my transponder back to working condition.
I will pass the word about you at the track.

Jim - Los Angeles USA

Thanks for all your help. It was a very pleasurable experience.
I'll be sure to tell everyone about your services.
If you ever come to the states look me up and I'll treat you for a night out on the town here in Atlanta.
Thanks again.

Ted - USA

Many thanks for another great job, well done.

Davy - N. Ireland

Thanks Jeff, the world needs more people like you.
I will recommend you to all my friends.

Matt - Australia

Now we send all ours for repair to Jeff Chandler at Transponder services, price is very reasonable and the turnaround time is quicker too.

Ian - UK

Thanks for the quick service. Greatly appreciated.

Andy - Australia

Thanks again for the updates and all the info Jeff.
I just sent the payment, and I will be sure to let friends know about your great service.

Mark - USA

I got the transponder back and it works just fine. Thanks so much for the great work!
I'll definitely post some positive feedback for you on the WERA forum board, and on

Tom - USA

I just wanted to e-mail back to say a huge thank you, your test to see if the Transponder works next to an AM radio worked a treat (it works!). You've saved me a lot of money so if I ever hear of any of our club members with a faulty unit I will steer them to you.

David S - UK Classic Sports Car Club

How to replace the battery in AMB Mylaps transponder

We often are asked these questions...
  • How to replace the battery in AMB Mylaps transponder?
  • How to remove the resin that encases the transponder internals?
  • How do I open a new style transponder that has no screws in the case?
  • What type of battery does my transponder take?
  • What is the voltage of the transponder battery?

We respectfully recommend not attempting repairs yourself and ONLY engage a company that has years of specialised experience in transponder battery replacement.

Too often someone attempts repair themselves to discover it is beyond their means and in the process have damaged the transponder so it cannot be repaired at all. A costly mistake!

Beware of "generic battery re-packers" and transponder repairers that do not have a long track record of reliable service.
We have been in business since 1999 with extensive experience and thousands of satisfied customers world wide.

So why risk an unknown or attempting it yourself when Transponder Services has a proven track record backed by a 1 year warranty and support. Plus if we cannot repair your transponder then there is no charge to you for the attempt. That's our guarantee to you.

Difference between TranX red, yellow & orange transponders

AMB TranX2 160 transponderAMB Mylaps Go Kart transponder

YELLOW AMB TranX2 160 transponder and Mylaps Kart transponder are designed for use in Go Kart racing.
The top working speed is 160 KPH.

AMB TranX2 260 transponderMylaps Car Bike transponder

RED AMB TranX2 260 transponder and Mylaps Car/Bike transponder are for fast motor sports such as Touring Cars, Speedway, Motorcycles, Sprint cars etc.
If you intend to race in fast motor sports that use the red transponder and you also race Go Kart you can use the red transponder for both sports. Red or yellow transponders DO NOT work on Motocross systems that use the Orange MX transponder

Mylaps MX transponder

ORANGE Mylaps MX transponder are for Motocross racing and CANNOT be used on timing systems that use the yellow or red transponders shown above.

Where to buy a race timing system

Transponder Services DO NOT sell complete race timing systems.
But we do stock selected transponders, chargers, holders and Loop Detection parts. See SHOP

USA buyers looking for model car racing timing systems try LiveTime LLC or RC Scoring Pro

European buyers try Kloft Timing in Germany

UK buyers of model car racing timing systems try BBK Software in the UK

Australian buyers of model car racing timing systems try HEI International in New South Wales

RC model car race management software

Links to web sites offering popular racing software for Remote Control Car Racing

RC Timing - aka RCM - Switzerland

Alycat - Australia

BBK Software - UK

B and B Autoscore - CA, USA

MatX Software - Italy

PC Lap Counter - Belgium

Race-Control - Germany

RC Scoring Pro - WI, USA

Laps Free - UK

RC Timing - UK

WinARC - France


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