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
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If you need your Mirtone unit tested or repaired,
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Industrial Electronic Repair
145 Rockwell Place Ct
Tobaccoville, NC 27050
Phone: 1-336-969-0110
Recent 89 Comments
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!
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The Mirtone 71269F fire alarm panel unit isn't functioning. Maintenance team needs to check it.
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Can the Mirtone 79044 board be repaired or bought? I'm trying to check this off my to-do list.
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Hello, could you please provide repair information for Mirtone 749044 25412275rev7 Zone Board? It has stopped working and we need a replacement. Thank you.
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Mirtone 79044 25412275rev7 Zone Board is not functioning, production is offline.
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Could you please confirm if the Mirtone 79045-2 Alarm Board is still supported or if replacement parts are available? Thank you.
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Mirtone now owned by GE and system is 20+ years old - No manuals or hookup diagram left - please help
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The Mirtone 749044 25412275rev7 Zone Board in the warehouse is not functioning as usual. It is displaying unusual behavior, but I am not certain what the specific issue is.
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We have a mirtone EC200 installed in a 36 unit Sr. Care complex with standard call switches in each unit and a call light outside the entry door on the exterior of each unit. The system is powered with a 24VAC transformer. We would like to replace the outdoor lights with a Horn/Strobe combination un…Purchase or Repair: 
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My Mirtone 79045-2 alarm board is malfunctioning, and I need a technician to repair it
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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.
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Hello, I am reaching out to inquire about the Mirtone 79045-2 alarm board. Our team is looking for information on whether this unit is still supported or if replacement parts are available. Could you please provide details on the current status of this product? Thank you.
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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.
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I require of support and that contacts a distributor to me of mirtone in the city of Mexico thanks
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the Mirtone 749044 25412275rev7 zone board malfunctioned and needs attention. Please check and repair during the day shift. Thanks!
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The Mirtone 79044 25412275rev7 Zone Board is malfunctioning, causing a production line disruption. Immediate repair and restoration are critical to resume operations swiftly.
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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.
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The maintenance team reported an issue with the Mirtone 79044 25412275rev7 Zone Board. They need assistance troubleshooting it.
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Do you have a Mirtone 749044 25412275rev7 Zone Board available for sale or repair? Need to get production back up quickly.
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Mirtone 79045-2 Alarm Board is malfunctioning, urgently requires repair to resume production. Requesting immediate attention to minimize downtime.
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Mir-tone Assy. 72024100 motherboard not powering up, no lights or display. Need repair service ASAP.
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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.
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Hello, I am inquiring about a Mirtone 79045-2 Alarm Board that needs repair. Can you please provide information on the repair process and cost estimate for this specific part? Thank you.
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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.
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The Mirtone 79044 25412275rev7 Zone Board is still down. Please provide an update as soon as possible.
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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.
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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.
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Do you have a Mirtone 79044 25412275rev7 Zone Board available for sale or repair? We need to keep production running.
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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
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The Mirtone 79044 25412275rev7 Zone Board in the warehouse is behaving unusually. It is not functioning as it typically does, displaying odd behavior.
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Can the Mirtone 79045-2 Alarm Board be repaired or purchased? I'm looking to check this off my to-do list. Thank you!
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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.
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looking for a unitsystem is in an apartment complex. tenant can operate one entrance and hear from same however 2nd entrance does not work
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Unit 25412275rev7 (Mirtone 79044) zone board is malfunctioning. Needs attention ASAP. Please check and reset during AM shift.
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The Mirtone 749044 25412275rev7 is not functioning properly. Please take a look and assess the issue. Thank you.
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The Mirtone 79045-2 alarm board experienced a malfunction today, causing downtime in the unit. This occurred at 1130 AM. Can you provide a quick explanation for what happened before the next shift arrives?
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Hello, I am trying to obtain a manuel for the mirtone 7800 series fire alarm system. I can\'t seem to locate one. Could you direct me to where i can either down load one or purchase one? Thank you,Selina
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Could you please provide repair information for a Mirtone QSP218 50064 Circuit Board? We need a quick answer for a replacement. Thank you!
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Could you please confirm if the Mirtone 79044 25412275rev7 Zone Board is still supported or if replacement parts are available for this older unit? Thank you.
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I am repairing a door lock at an apartment block showing these symptoms.A transformer feeding the MA-485 is outputting 19.25 volts...will this harm the unit.It is a 16 volt amplifier.B when an apartment station depresses the door button the output at the amplifier terminals for the ac door reads 19.…Purchase or Repair: 
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Hello, the Mirtone 79044 Zone Board is displaying error code ER345. The alarm is continuously sounding, and all zones are appearing as inactive. Urgent assistance is required to troubleshoot and resolve this issue
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Board failure on Mirtone 79044 25412275rev7 Zone Board identified during maintenance rounds. Needs immediate attention to avoid disruptions.
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Can the Mirtone 749044 25412275rev7 Zone Board be repaired or replaced? Just trying to check this off my to-do list.
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Hi...I have one customer with no voltage to the door striker but have confirmed the striker works. Transformer is ok! Do you have the parts for this, relay etc to ship so I can repair it or do you have a re-conditioned unit for sale. The seniors in thecomplex want it yesterday..Can you help?R.Jim Wh…Purchase or Repair: 
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Mirtone 79045-2 alarm board displaying error code E23 and preventing machine from powering on.
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