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

— Posted by Dennis Hoard on 2011-03-20

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If you need your Mirtone unit tested or repaired,
give us a call at 1-336-969-0110.
We offer fair 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 13 Comments

#Mirtone by R.Jim White/WSM on 2007-05-08 23:21
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...
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#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.
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#Mirtone by Barry Kater on 2008-02-19 00:23
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....
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#Mirtone by Bruce Aronson on 2008-06-25 04:22
Mirtone now owned by GE and system is 20+ years old - No manuals or hookup diagram left - please help
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#Mirtone by andré desjardins on 2008-08-06 21:37
hello we did renovation and we broke a wire now we need the sqematic for it thank you
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#Mirtone by tim stokolosa on 2009-01-17 14:06
My customer has an 8 floor.20 suite/floor mirtone system with pull stations in all suites.each suite is decoded in the mirtone on each floor and then on the first and second floor there are two master stations to decode the floor number. The system is only local to the caretaker.The owners want all ...
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#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
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#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
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#Mirtone by selina drake hohn on 2009-12-24 13:59
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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#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
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#Mirtone by Dan - North Coast Refrigeration & Electric, Inc on 2010-07-12 18:14
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...
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#Mirtone by Dennis Hoard on 2011-03-20 22:58
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 th...
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#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 ?
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Tobaccoville, NC 27050
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