Mirtone Service & Repair Forum

Mircom Intercom Amplifer -MA-485 \"do,s not have any audio sound aplification needed to operate an apartment intercom station . I beleive when the oringinal split transformer 8v for door and 16 vac for the audio burned out\" because the pos+ side came lose and grounded to the neg - side the replacement was a 120- AC 24 volt 1.67 Amp 40 that I believe it damaged the amplifier circuit \"leading to no sound at the intercom station.Please correct me if I\'m wrong at my way of thinking. leewright

—> Purchase or Repair: Ticket Image

— Posted by Dennis Hoard on 2011-03-20

Reply🗨️Ask a New Question Below❓


Recent Comments Search: "Mirtone"

If you need your Mirtone unit tested or repaired,
give us a call at 1-336-969-0110.
We offer free estimates and extended warranties on the work performed.
Shipping/Receiving:
Industrial Electronic Repair
145 Rockwell Place Ct
Tobaccoville, NC 27050
Phone: 1-336-969-0110


Recent 89 Comments

#Mirtone by DENNIS LOPEZ on 2013-07-01 08:47
Mirtone 749044 25412275rev7 Zone Board not responding, production offline.

—> Purchase or Repair:
#Mirtone by rick gatchell on 2013-04-10 12:44
The Mirtone 749044 25412275rev7 is a Zone Board that is not currently working.

—> Purchase or Repair:
#Mirtone by street on 2010-09-29 21:17
The Mirtone 79045-2 alarm board is malfunctioning, causing delays in production. Immediate repair service is needed to avoid further disruption to the production line. Please address this issue urgently.

—> Purchase or Repair:
#Mirtone by Derek Venhuizen on 2025-06-07 04:15
We are experiencing a critical issue with the Mirtone 71269F Fire Alarm Panel on the production line. The system is failing to trigger alarms during the testing phase, posing a serious safety risk. Urgent repairs are required to get operations back on track quickly.

—> Purchase or Repair:
#Mirtone by rosemary on 2025-06-06 13:08
Could you please provide repair information for a Mirtone QSP218 50064 Circuit Board? We need a quick answer for a replacement. Thank you!

—> Purchase or Repair:
#Mirtone by Rick Burdge on 2009-05-07 17:57
looking for a unitsystem is in an apartment complex. tenant can operate one entrance and hear from same however 2nd entrance does not work

—> Purchase or Repair:
#Mirtone by Ubaid on 2013-12-23 04:37
The Mirtone 749044 25412275rev7 Zone Board is displaying Error Code E13 and not detecting any input from Zone 3. Need urgent service to troubleshoot and resolve the issue.

—> Purchase or Repair:
#Mirtone by andrisol on 2010-02-16 14:51
The Mirtone 79045-2 alarm board is not working.

—> Purchase or Repair:
#Mirtone by saini on 2013-07-24 23:32
I can help with that. I'll reach out to the manufacturer to inquire about support and parts availability for the Mirtone 79044 25412275rev7 Zone Board.

—> Purchase or Repair:
#Mirtone by jarvis on 2013-07-14 08:57
Could you please confirm if the Mirtone 749044 25412275rev7 Zone Board is still supported or if replacement parts are available for this unit? Thank you.

—> Purchase or Repair:
#Mirtone by Christiane Larouche on 2009-05-17 13:44
please send manual mirtone ec200 but tone stop laps time small please send me why do it the time = laps time long.ThanksJ\'aimerais savoir comment faire pour mettre le signal sonore sans interruption automatique. C\'est à dire que je veux l\'arrêter moi-même. Merci

—> Purchase or Repair:
#Mirtone by Moisés Fernandes Cunha on 2010-08-13 00:15
The Mirtone 79045-2 alarm board is not working, as reported by the shop.

—> Purchase or Repair:
#Mirtone by Jimmy Alexander on 2010-08-21 20:30
Hello, I'm interested in purchasing a Mirtone 79045-2 Alarm Board. Could you please provide information on pricing and availability? I am looking to source one quickly. Thank you.

—> Purchase or Repair:
#Mirtone by MATHUR on 2010-11-08 22:31
Hi there, I need repair info on a Mirtone 79045-2 Alarm Board that stopped working. Can you please provide guidance on how to fix or replace it? Thank you!

—> Purchase or Repair:
#Mirtone by Jesus Maldonado on 2013-06-25 12:36
the Mirtone 79044 25412275rev7 zone board on unit XYZ went down mid-shift. Please check it out and get it back up and running. Thanks!

—> Purchase or Repair:
#Mirtone by Branko Colic on 2010-11-18 02:17
Mirtone 79045-2 alarm board not responding, preventing production restart.

—> Purchase or Repair:
#Mirtone by Faisal Riaz on 2013-06-28 01:23
The maintenance team reported an issue with the Mirtone 79044 25412275rev7 Zone Board. They need assistance troubleshooting it.

—> Purchase or Repair:
#Mirtone by Vlade on 2013-05-25 10:24
Mirtone 79044 25412275rev7 Zone Board is not functioning, production is offline.

—> Purchase or Repair:
#Mirtone by sabahattin YILMAZ on 2013-08-13 13:32
Could you please verify if the Mirtone 79044 25412275rev7 Zone Board is still supported by the manufacturer or if replacement parts are available for it? Thank you.

—> Purchase or Repair:
#Mirtone by Chris Atwater on 2013-06-28 04:23
Please provide details about the Mirtone 79044 25412275rev7 Zone Board. Is this product still supported, and are replacement parts available? Thank you.

—> Purchase or Repair:
#Mirtone by Thoma on 2013-03-25 04:32
Mirtone 79044 25412275rev7 Zone Board not powering up.

—> Purchase or Repair:
#Mirtone by nelson dominguez on 2010-01-13 15:59
I require of support and that contacts a distributor to me of mirtone in the city of Mexico thanks

—> Purchase or Repair:
#Mirtone by Travis Brown on 2019-09-20 18:15
The Mirtone 71269F fire alarm panel unit isn't functioning. Maintenance team needs to check it.

—> Purchase or Repair:
#Mirtone by Korin on 2010-08-22 11:57
Mirtone 79045-2 alarm board not powering on, halting production.

—> Purchase or Repair:
#Mirtone by dedra landon on 2010-09-22 10:38
Mirtone 79045-2 alarm board displaying error code E23 and preventing machine from powering on.

—> Purchase or Repair:
#Mirtone by darren kotzur on 2008-02-16 00:00
Mir-tone Assy. 72024100 motherboard not powering up, no lights or display. Need repair service ASAP.

—> Purchase or Repair:
#Mirtone by Pavlicek on 2013-07-22 15:32
the Mirtone 749044 25412275rev7 zone board malfunctioned and needs attention. Please check and repair during the day shift. Thanks!

—> Purchase or Repair:
#Mirtone by Balazs Nemeth on 2013-08-17 08:32
The Mirtone 79044 25412275rev7 Zone Board is still down. Please provide an update as soon as possible.

—> Purchase or Repair:
#Mirtone by Robert on 2013-06-13 18:11
No power being supplied to the door lock. Unit is clicking when door release pressed but no power being supplies to door lock. Anyone have an answer or solution for this ?

—> Purchase or Repair:
#Mirtone by Berketis Loukas on 2013-01-18 08:41
Hello, I am looking for assistance with a Mirtone 79044 25412275rev7 Zone Board. Can you please provide information on troubleshooting or repairing this part for my client? Thank you.

—> Purchase or Repair:
#Mirtone by SPYROS C MASTER on 2013-09-24 05:48
Unit 79044 25412275rev7 (Zone Board) went down mid-shift. Need follow-up during the day.

—> Purchase or Repair:
#Mirtone by Canaves on 2013-03-11 14:53
Zone board on Mirtone 749044 25412275rev7 failed during rounds. Need urgent attention to replace board for system functionality.

—> Purchase or Repair:
#Mirtone by Relivosse on 2013-02-13 19:06
The Mirtone 79044 25412275rev7 Zone Board in the warehouse is exhibiting unusual behavior, deviating from its normal operations.

—> Purchase or Repair:
#Mirtone by Pellegrini Yves on 2013-02-26 13:28
The Mirtone 749044 25412275rev7 Zone Board in our warehouse is exhibiting unusual behavior. It is not functioning as it normally does. Please investigate this issue at your earliest convenience.

—> Purchase or Repair:
#Mirtone by Brian Martin on 2013-07-16 04:44
The maintenance team reported that the Mirtone 79044 25412275rev7 Zone Board is not functioning.

—> Purchase or Repair:
#Mirtone by Remus on 2013-08-20 13:32
Board failure on Mirtone 79044 25412275rev7 Zone Board identified during maintenance rounds. Needs immediate attention to avoid disruptions.

—> Purchase or Repair:
#Mirtone by Volker Schmidt on 2013-04-06 08:57
The Mirtone 749044 25412275rev7 is a Zone Board unit, but I'm not fully familiar with it yet. Maintenance team reported that the unit is not working and needs attention.

—> Purchase or Repair:
#Mirtone by Ray Hellmann on 2013-05-07 03:33
Can you please confirm if the Mirtone 749044 25412275rev7 Zone Board is still supported or if parts are available for repair? Thank you.

—> Purchase or Repair:
#Mirtone by William Arndt on 2010-08-06 08:33
Could you please provide me with pricing and availability information for the Mirtone 79045-2 Alarm Board? I am looking to source one quickly and would appreciate your assistance. Thank you.

—> Purchase or Repair:
#Mirtone by john Voorhis on 2010-11-20 07:54
The Mirtone 79045-2 alarm board in the warehouse is exhibiting abnormal behavior. It is not functioning as it typically does, and its operations seem odd.

—> Purchase or Repair:
#Mirtone by Bennie Johnson on 2013-11-14 01:19
Hello, could you please provide repair information for Mirtone 749044 25412275rev7 Zone Board? It has stopped working and we need a replacement. Thank you.

—> Purchase or Repair:
#Mirtone by mahrndra on 2010-08-23 05:39
I'm reaching out regarding Mirtone 79045-2 Alarm Board. Could you please provide details on troubleshooting or repair options for this part? Thank you.

—> Purchase or Repair:
#Mirtone by vargas on 2013-07-26 05:32
The Mirtone 79044 25412275rev7 Zone Board is malfunctioning, leading to a disruption in our production line. Immediate repair or replacement is necessary to resume operations

—> Purchase or Repair:
#Mirtone by Aguinaldo on 2010-04-15 17:33
Do you have a Mirtone 79045-2 Alarm Board available for sale or repair? Our unit is down, and we need to get production running again as soon as possible. Thank you.

—> Purchase or Repair:
#Mirtone by steve reyes on 2013-08-10 05:35
Do you have a Mirtone 79044 25412275rev7 Zone Board available for sale or repair? Our unit is down, and we need to keep production running. Thank you.

—> Purchase or Repair:
#Mirtone by Ankur Patel on 2010-11-28 23:11
Having issues with the Mirtone 79045-2 Alarm Board. Need a repair technician to check and fix the industrial unit. Please respond if you can help.

—> Purchase or Repair:
#Mirtone by Chairully on 2013-08-06 02:32
Our Mirtone 749044 25412275rev7 Zone Board stopped working. Need a replacement but can't find one. Please provide repair info asap. Thank you!

—> Purchase or Repair:
#Mirtone by Agarwal on 2013-04-05 13:46
I'm experiencing some issues with the Mirtone 749044 25412275rev7. It seems like the machine has stopped functioning properly. Can you help troubleshoot the problem?

—> Purchase or Repair:
#Mirtone by Basheer on 2013-03-16 22:15
Need repair for Mirtone 79044 25412275rev7 Zone Board. Not functioning, looking for technician to fix industrial unit

—> Purchase or Repair:
#Mirtone by Sghedoni Giorgio on 2010-08-18 08:40
Could you please confirm if the Mirtone 79045-2 Alarm Board is still supported or if replacement parts are available? Thank you.

—> Purchase or Repair:

Contact Us

🚑Shop Location🛠️

Industrial Electronic Repair
145 Rockwell Place Ct
Tobaccoville, NC 27050
🚑 Rush repair shipments only — no walk-ins.

📞Phone

1-336-969-0110

📦Mailing Address🚛

Industrial Electronic Repair
931-E S. Main St #204
Kernersville, NC 27284
📦 Mailing Address (for invoices or shipped repairs)
No walk-ins accepted.