Mail-in repairs, available throughout Poland
Factory audio amplifier
Manufacturer: Mitsubishi Electric
Is the radio working, but nothing is coming from the speakers? We repair factory Rockford Fosgate amplifiers from Mitsubishi Outlander III, ASX and Lancer. We help with dead speakers, hiss with the radio switched off, a flat battery and the effects of water ingress. Check your amplifier number and describe the symptoms to us.
Quick repair quote
This is an eight-channel Rockford Fosgate audio system amplifier, factory fitted in Mitsubishi vehicles. The radio sends the signal to it, and it powers the speakers and subwoofer. We identify the version by the part number on the label.
Applications: versions with the factory Rockford Fosgate audio system. We confirm the correct amplifier by the part number.
Look for a flat metal amplifier with a finned heatsink under the front seat. On the connector side, it has two large black plugs and one smaller white one. On the housing label you will find a part number in the format 8701Axxx.
Under the front seat, in the floor recess. In Outlander III and ASX — under the passenger seat. In other models, check under both front seats. Access usually requires removing the seat and lifting the carpet.
We repair amplifiers 8701A409, 8701A474 and 8701A565 to the same extent, so we describe them together. That does not mean you can swap them between cars. Earlier Rockford Fosgate amplifiers, such as 8701A257, 8701A309 or 8701A350, are found in the Outlander II and some Lancers and ASX models — these are different units.
Compare the number on the label with the list below. The list helps identify the amplifier; it does not mean the amplifiers can be used interchangeably. If you cannot find your number, send us a photo of the label.
An amplifier fault may start with one speaker and end with complete silence. The symptoms below help describe the problem; the symptom itself does not yet determine the cause. We determine the repair scope after opening the amplifier.
The radio switches on, changes stations and displays the screen, but none of the speakers play. If the amplifier is faulty, replacing the radio will not change that. We test the amplifier on a Mitsubishi radio test bench and determine which circuit is not working.
One side is silent, or the rear speakers or subwoofer are not working. Sometimes only the tweeters play. After damp ingress, the sound may disappear first on some channels before the amplifier falls silent completely. We test each of the eight channels separately.
You can hear hiss, whining or crackling from the speakers that does not react to volume and does not stop when the radio is switched off. Sometimes there is a smell of burnt electronics. A short circuit may be the result of water ingress or a voltage spike, for example when jump-starting the car from a booster pack. We look for a short in the power stage and moisture-related damage.
After standing overnight the car will not start, and after charging the problem returns. A faulty amplifier may fail to go to sleep and draw current continuously. We check the amplifier power supply circuit.
After a spill, water from the mats or a leak, the sound disappeared completely or only from some speakers. No signs of water on the casing do not rule out internal corrosion. We open the amplifier, assess the extent of the corrosion and then confirm the repair scope.
Unit refurbishment: 1476 zł incl. VAT. The price includes refurbishment of the amplifier board, including after water damage, and testing of all channels. If after opening it turns out that a different scope of work is needed, we will provide a separate quote for approval. We issue a VAT invoice.
After checking the amplifier, we confirm the scope of work and the price. We start the repair after your approval.
Refurbishment usually takes 1–5 working days from receipt of the amplifier. Transport and removal and refitting in the car must be added to that. We confirm the timeframe for any other work after inspection.
We provide a 24-month written warranty on amplifier refurbishment.
In the Rockford Fosgate system, the radio does not power the speakers. It sends audio and control signals to the amplifier, and only the amplifier under the front seat drives the speakers and subwoofer. That is why a working screen, changing stations or a visible map say nothing about the condition of the amplifier. For the same reason, a new or different radio will not restore sound if the amplifier is faulty.
In your report, describe exactly what you hear. Complete silence, no sound on one side, or only the tweeters working can have the same root cause, for example corrosion after damp ingress, but only checking the amplifier determines the cause. Hiss with the radio switched off and a flat battery in the morning usually indicate a short circuit through which the amplifier draws current while parked. Report such symptoms immediately.
The amplifier sits in the lowest point of the floor, under the front seat. It is exposed to spilled drinks, water from shoes and mats after winter, and water from body leaks. The metal casing is not sealed. Water inside, combined with voltage that is present even when parked, quickly causes track corrosion and short circuits on the board. This is why sound disappears, there is noise and current draw after flooding.
This leads to two things. First, a dry casing does not prove there is no internal damage — only opening the amplifier shows the extent of the corrosion. Second, a used amplifier bought as a replacement has worked in the same place and may have had the same problem. Before refitting a repaired or different amplifier, it is worth removing the cause of the water in the car.
After opening the amplifier, we assess how far the corrosion has spread and which circuits are not working. We clean the board ultrasonically to remove deposits and residue left by water. We rebuild corroded tracks and replace damaged components — if necessary, the DSP processor as well. We also replace components that, based on experience, we consider vulnerable in these amplifiers, to reduce the risk of another failure.
At the end, we connect the amplifier to a test bench with the original Mitsubishi radio and the correct wiring loom. We check each of the eight channels and stability of operation. This confirms that the amplifier powers all speakers and the subwoofer, not just some of them — which matters because flood damage often starts with a single channel.
01
Give the car model and year, and describe what you can hear: silence, only some speakers working, or noise. Attach a photo of the amplifier label. We usually reply within 24 hours on working days.
02
Send the amplifier only, without the radio or wiring looms. Protect the unit with bubble wrap, place it in a rigid box, and fill any empty space.
03
If you wish, we can arrange courier collection and return at our expense. Once we receive the amplifier, we test it and confirm the scope of work. We start the repair after your approval.
04
We send the tested amplifier back with an invoice and a written warranty. After refurbishing your own amplifier, refitting it in the same car does not require coding.
Rating 5 out of 5. GOOGLE REVIEW
Many thanks to the entire OEMatic team for repairing the radio in my Lexus CT.
Professional and reliable service. I can wholeheartedly recommend this workshop!
Problem: black screen, no working radio, no interaction with the radio at all.
Jan BałRating 5 out of 5. GOOGLE REVIEW
Highly recommended! My OEM JBL amplifier from a Toyota (CHR, 2017) suffered a short circuit, and other audio workshops would not agree to repair it. Here the problem was solved extremely quickly. They received the parcel on Monday, and by Thursday the repaired unit was back with me. Excellent communication at every stage, and most importantly – the price includes a 24-month warranty.
Complete professionalism!
Mateusz JaniczekRating 5 out of 5. GOOGLE REVIEW
A service absolutely worth recommending. After years of problems with the infotainment head unit in my Skoda Superb constantly freezing and resetting, the MIB was finally repaired. The main dealer could only offer a replacement with a new unit for 3500 eur (!), other car audio companies could not help, and OEMatic carried out the repair in 1 day.
Piotr NofskiRating 5 out of 5. GOOGLE REVIEW
I recommend them wholeheartedly….I don’t know how they did it, but they decoded the radio from an Iveco Daily 2020 faster than it takes to pack the parcel with the radio…One workshop promised a lot, but failed and said the radio was only fit for scrap. I highly recommend them — complete professionalism and a good price. Best regards.
autoodnowa u.Rating 5 out of 5. GOOGLE REVIEW
I can definitely recommend them. Mr Tomasz repaired my BOSE amplifiers, RNS, NTG navigation units and more. Always 100% successful, fantastic customer approach and a convenient online platform for placing repair orders.
Piotr BrzezinaRating 5 out of 5. GOOGLE REVIEW
I recommend OEMatic — only 3 days passed from sending the radio to the workshop and having it fitted back in my car.
The radio from a Mercedes ML W164 2007 NTG2 BE 6089 had its fault diagnosed extremely quickly, and the repair was carried out just as fast.
Communication with Mr Tomasz was excellent, and updates from the workshop on the progress of the repair were sent promptly. This is definitely a workshop other people can learn from.
An obvious 5 stars from me.
AdrianRating 5 out of 5. GOOGLE REVIEW
I had a problem with my Audi A3 8V, with no sound from the factory multimedia player. The guys solved the problem in a few days. I recommend them!
Rafał NiżnikRating 5 out of 5. GOOGLE REVIEW
Service and expertise 100%. Thank you for helping with my RNS 315 radio. Highly recommended!
Michał TuzRating 5 out of 5. GOOGLE REVIEW
VW Touran radio, I sent it to the company because the reversing camera was not working and the radio would not turn on. Sent by courier. Diagnosis: no faults. (the fault needs to be looked for elsewhere) The radio was sent back quickly and the company did not charge anything, not even for the return postage. There probably aren’t many honest companies like this left here in Poland. Many thanks.
John DoeRating 5 out of 5. GOOGLE REVIEW
Definitely recommended. Very fast repair and very good, speedy communication. Information was available at every stage of the repair request process — an online repair management system. The unit (radio) was already meant to be written off and replaced with another used one. Fortunately, I accidentally found the OEMatic blog while looking for a replacement, and it saved me from replacing it with another used unit, which would have been a loss for the appearance (the fronts of the replacements I found were not in such good condition, and all of them were older than my unit from pre-facelift models); the newer ones were more expensive than the repair. So that’s a plus too.
Artur KozubskiRating 5 out of 5. GOOGLE REVIEW
RNS 315 radio with faulty Bluetooth. The radio sounds better than new. Others gave up on the repair, OEMatic handled it efficiently and quickly without any problems. We need more professionals like this. Thank you for the repair.
Krzysztof SzabońRating 5 out of 5. GOOGLE REVIEW
Professionally carried out repair of a factory VW radio, excellent communication, complete professionalism. May there be more companies like this in Poland.
Sławomir PobłockiRating 5 out of 5. GOOGLE REVIEW
I left a Honda Jazz radio panel for repair. In addition to the radio, the guys also repaired the CD player at the same price, even though I hadn’t asked them to. I also received spare bulbs for the button backlighting. Very friendly and professional, the radio and player work flawlessly. I recommend them with a clear conscience. Such expertise is rare nowadays.
b nowickiRating 5 out of 5. GOOGLE REVIEW
Highly recommended. ZENEC radio after the pin was blocked. Code removed. Radio works, old pin. Fast, 1 day. Telephone contact without any problem. Parcel safely packed.
Stefan NowakRating 5 out of 5. GOOGLE REVIEW
For a long time I’d been battling an annoying problem in my VW Passat B8 — the car radio kept losing sound. Fortunately, I found OEMatic Car Media Lab and it was a perfect choice!
From the first contact it was clear there was professionalism and huge knowledge of factory audio systems. Quick diagnosis and an even quicker (and most importantly: EFFECTIVE!) repair! The result? The radio plays crystal clear, with no dropouts or interruptions. You can tell the fault was removed at the source, not just temporarily masked.
If you have any problems with factory audio, navigation or the radio in your car (especially VW, Audi, Skoda!), I definitely recommend OEMatic Car Media Lab. True experts!
Łukasz PuziakRating 5 out of 5. GOOGLE REVIEW
The Harman-Kardon amplifier in my BMW F33 was flooded, so I decided to hand it over to OEMatic. A quick check to see whether it could be saved — yes! it could! A few days later the amplifier was back with me after repair.
For a moment I also had doubts whether only the amplifier had been damaged by the flooding, because I lost the ability to set the time and information such as instant fuel consumption or average fuel consumption disappeared; after a phone call I was told that this can happen because of a break in the car’s CAN circuit due to the amplifier being absent.
The theory proved correct, and fitting the already repaired amplifier helped and all the functions returned.
I hope the amplifier will serve for a long time to come and without faults.
I honestly RECOMMEND IT!
Michal MarecikRating 5 out of 5. GOOGLE REVIEW
A great company, they will help you in any situation when it comes to navigation.
Two companies from the Małopolskie region where I live suggested replacing the unit; at the authorised service centre the fault repair would cost 1400 ,- and they helped me fix it, and over the phone 😃
Miroslaw SytyRating 5 out of 5. GOOGLE REVIEW
The content of the reviews I read quickly convinced me to have my unit repaired at OeMatic. I expected the highest quality of service at every stage and that is exactly what I received. After the phone call I received all the information needed for shipping by text message. As soon as the workshop received the parcel with the radio, I got a phone call, we agreed the details, I confirmed the price and the repair began. In the afternoon of the next day I was informed that the repair had been completed, I settled the bill and the radio was back with me after 4 days. It seems there is no room for even the slightest shortcoming in this company (such as a delay with a text message).
For me, this is the highest quality.
Thank you very much for the repair and I wish you success🙂
Dawid
Ania ŁyszkowskaRating 5 out of 5. GOOGLE REVIEW
Professional and reliable service. The fault was initially diagnosed remotely, and the repair cost estimated. The unit was delivered to the workshop and collected remotely by courier. Everything was fast, straightforward and efficient. The car audio came back to life 🙂
I can recommend them with a clear conscience.
Bartłomiej MachnikRating 5 out of 5. GOOGLE REVIEW
Five stars is not enough..
OEMatic solved the problem with a non-working USB port (motherboard repair) in the factory navigation system from a Kia Sportage in express mode. Highly recommended.
KJSymptoms, causes and refurbishment process for the Rockford Fosgate amplifier from Mitsubishi Outlander and ASX.
No. You send only the amplifier. We test it on the bench with a Mitsubishi radio and the correct wiring loom, so the radio from your car is not needed.
After refurbishing your own amplifier and refitting it in the same car, coding is not needed. Repairing the board does not change the car’s coding or configuration.
Usually yes. Drying it out on its own is not enough, because water leaves corrosion on the board. Once opened, we assess how deep the damage goes. Refurbishment after water damage is included in the price of 1476 zł incl. VAT; if a different scope of work is needed, we will quote it separately before repair.
Yes, we repair those amplifiers too. Please give the full number from the label in your enquiry. The list of numbers on this page is for identifying the amplifier, not for selecting a replacement.
No. These are earlier Rockford Fosgate amplifiers, found among others in the Outlander II. We quote their repair separately — give the number from the label and the symptoms, and we will check whether repair is possible.
This symptom usually means a short circuit in the amplifier, and the amplifier may then drain the battery. Do not leave the car like this for long: have the amplifier disconnected and send it to us for testing.
No. If you decline after the quote, the repair turns out to be impossible, or the cause lies outside the amplifier, diagnostics and return shipping are free.
The amplifier is usually with us for 1–5 working days. Add to that two courier journeys and removal and refitting under the seat.
A used amplifier has worked in the same place under the seat and may have been exposed to water, and its condition is not visible without opening the case. Check the full number and return conditions. Refurbishment of your own amplifier costs 1476 zł incl. VAT, with a 24-month warranty.
