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last updated Fri 12 Dec 14

Hearing Aid Repair Services

If you have hearing aid problems, contact your audiologist, advisor, resource teacher or classroom teacher who will be able to help. If you need further assistance, contact van Asch.
Please do not send repairs directly to the supplier, unless you wish to pay for service costs.
Do not include moulds with hearing aids sent for repair - you may need the mould for use with a spare aid.

Technical Services information

Van Asch Deaf Education Centre is funded by the Ministry of Education to supply batteries, accessories and equipment services for students in their region enrolled in an educational setting and under 21 years of age.

Obtaining Batteries and Accessories
To obtain batteries, etc. the students or families can access van Asch by:

Phone: 03 326 6009
0800 van Asch
0800 826 2724



Info, van Asch Deaf Education Centre
38 Truro St
Christchurch 8081

Contact their adviser on deaf children
Contact their local audiology clinic
(A number of clinics hold supplies of batteries for van Asch students.)

The minimum information required in order to supply and undertake repairs:
Student's first and last name
Date of Birth
Home Address
Audiology Clinic

NB Replacement Ear Moulds
You need to contact your Audiologist or Adviser for supply of ear moulds, which are available under the MoH HAFS repairs application process.

Replacement Tubes & Domes
Your audiology Clinic will order these items for you under the MoH HAFS repairs application process.

Repairs to Hearing Equipment
If equipment requires repair we recommend that the repair be sent to van Asch by the fastest possible means. Depending on the student's location and access to support, this may be via the audiology clinic, the AODC or sent directly to the above address at van Asch by the parent/caregiver. Please include on the Hearing Aid Repair Request form the minimum information listed above and include the returning address for the repair if other than the home address and a brief description of the fault. Please remember that all repairs must be sent to van Asch Deaf Education Centre.

For repair of FM equipment it is essential to send all components, i.e. transmitter, receivers, charger, adaptors, microphone and DAI shoes. Please package well as the devices are fragile and expensive to replace.

Looking after your hearing aids

Please print this form, complete it and send it with the Hearing aid to van Asch Deaf Education Centre for repair.
> Hearing Aid Repair Request form


To clean your mould:

  1. Remove the tubing from the hook, but do not remove the hook from the hearing aid - this can damage both the hook and the hearing aid.
  2. Use warm water with a little detergent.
  3. Leave the mould in the water for 3-5 minutes, then use a small brush, e.g. an old toothbrush, to clean it.
  4. Rinse with clean warm water.
  5. Make sure there is no water in the tubing. Any water can be removed with a puffer.
  6. Dry the mould with a soft cloth.


Remember to take the battery out if you are not using your hearing aid.
Always check that you have the battery in the right way.
Use a battery tester to check batteries. Remember to do this at the end of the day,
when your battery is at its weakest.
> Batteries and accessories order form

Hearing Aid Care

Always look after your hearing aids.

  • Do not get them wet.
  • The hot water cupboard is a good place to dry your hearing aid with the battery out, and the battery drawer left open.
  • It is a good idea to 'work' the volume control occasionally to clean the carbon track. This helps prevent noisy and intermittent volume control operation.
  • DO NOT attempt simple repairs with cyanoacrylate adhesives (Superglue). This can lead to expensive repairs.

In-the-Ear Aids

These are small and fragile, and need careful handling. Check regularly for any wax build up. Remove any wax carefully with the correct instruments.

Causes Of Failure - Handling/Care

The major problem created by faulty equipment is that often the student has put up with unreliable operation for an extended period prior to the equipment being sent in for repair.

Students observing the following simple rules would achieve an estimated 30% reduction in breakdown.

Hearing Aids

Never remove an ear mould from the ear by pulling on the hearing aid or mould tubing:
This breaks the front end housing of hearing aids.
Cracks hooks which causes feedback.

With softer silicon moulds the tubing is easily pulled out of the mould this weakens the fit of the tubing, causes feedback & eventually ruins the mould.

  • Never attempt to remove the tone hook from the aid as this will often result in damage.
  • When cleaning moulds be sure to remove the mould tubing from the tone hook by grasping the tone hook and mould tubing, avoid putting any stress on the casing of the aid.
  • Never carry the aid loose in a pocket without a protective case.

An increase in the number of Widex and other behind the ear hearing aids requiring repair following damage to the hook front/casing of the aid are also due to incorrect handling, the incidence of breakage will be significantly reduced if the aids are handled correctly. Loose/cracked tone hooks on Oticon aids can also often be attributed to these handling issues.

FM Systems

Incorrect handling and lack of care is the biggest single cause of failure with FM systems.

I think it helps to remind users occasionally that these systems cost between $2,500 and $4,500.

Encourage Students to store the equipment when not in use in a rigid container (Warehouse or Payless Plastics). A backpack loaded with books is not a good container for an unprotected FM system, the soft leather case supplied by distributors of the equipment is not adequate protection. Classroom Teachers need to be informed of these frailties and of the care required for ongoing reliable operation.

We would expect Students fitted with MicroLink systems to utilise the supplied carry case for protecting components not in use.

Cochlear Implant Device Support

Southern Cochlear Implant Programme
Block1, Milford Chambers
249 Papanui Road
Christchurch 8014
Free phone number: 0800 500 405
For emergencies you may also phone 0275 326 321. Batteries, spare parts and loan devices can be accessed by phone or email.

Our Technicians

My name is Emma Holden and I am the new technician here at van Asch.  I've had 5 years experience in the Audiology field where I've learnt everything from conducting pure tone audiometry to helping people set up assistive listening devices.  If there is anything I can help with please don't hesitate to get in touch.


Phil Henderson has been employed as a technician at van Asch since 1978. He started as a trainee technician repairing hearing aids and school AV equipment. Since 1991 he has been responsible for computer and network support for the Centre's administrative and classroom computers.