Professional MRI Service & Repair
Hardware & System-Level Repair for GE Signa MRI Scanners
When a GE Signa MRI throws a Multicoil TR Bias Fault, an Auto Pre-Scan Failed error, or won't clear Gradient Not Ready, the console is telling you something's wrong — but not what. FDM Enterprises finds the actual cause fast, instead of you losing a day to trial and error.
We specialize in GE Signa Excite, HDx, and HDxt systems (Signa software 9.x–23.x), backed by 25+ years of hands-on field service across hospitals, imaging centers, and veterinary facilities in the Southeast US.
RF System Faults We Repair
Multicoil TR Bias Fault — One of the most common reasons a GE Signa system won't complete Auto Pre-Scan. It can point to more than one part of the RF chain, and getting it wrong means chasing the wrong fix while your suite sits empty. We find the actual source and get you scanning again.
RF Amplifier Fault — A fault status or dead indicator on the RF transmit amplifier can bring scanning to a complete stop. These amplifiers don't give much warning before they go, and running the wrong test on the wrong day costs more than the downtime already has. We know exactly what to check first.
TR Driver Fault — Body or Head TR — An open circuit fault on the transmit/receive switch, Body or Head, that can come from a handful of different places in the system. Chasing it without the right approach turns a same-day fix into a multi-day scramble.
Gradient System Faults We Repair
Gradient Overcurrent / Not Ready Recovery Fault — A gradient system fault tied to overcurrent protection or a failed recovery-to-ready cycle — and one of the more dangerous ones to guess on. The gradient system runs at high voltage, and misdiagnosing it risks replacing a part that was never the problem.
Gradient Power Supply Fault (No ID / Overtemp) — A fault flagged on the gradient power supply doesn't always mean the power supply is actually at fault. Jumping to a part swap here is a common, expensive mistake — and one that keeps your system down longer than it should be.
Gradient Not Ready — Your system won't report ready to scan, and the cause can live in more than one place in the gradient chain. Chasing the wrong component means unnecessary downtime and cost you didn't need to take on.
Table & Scan Interruption Faults We Repair
Scanner Pauses or Stops Mid-Scan — There's nothing worse than a patient on the table and the scan grinding to a halt. Pauses and mid-scan interruptions can come from a number of different places, and knowing exactly where to start is what gets your system back up fast and your schedule back on track.
Landmark Locked / Table Won't Move — Few things stall a shift faster than a table that won't move into position, or a scan that won't advance because the table's locked out. It can stem from more than one part of the system, and chasing the wrong one only adds to the downtime.
Auto Pre-Scan Failed — One of the most common reasons a scan won't start, and one of the hardest to self-diagnose — it can be almost any subsystem underneath. Guess wrong and you've lost time and money on a part that was never the problem.
Patient Comfort & Bore Environment
Patient Comfort Sensor Warning / Trip — One of the more disruptive faults there is — scanning stops completely until it clears, with a patient already in the bore. The cause can be anywhere along the cooling path, and running blind on this one usually means paying for parts that were never at fault.
Unusual Noise or Vibration During Scans — A new noise or vibration during scanning is unsettling for patients and staff alike, and it rarely gets better on its own. More than one component can be behind it, and pinpointing the right one takes real diagnostic experience, not a guess.
Left unresolved, a comfort-sensor trip takes your scanner fully offline until it's cleared — call before it escalates into a full day of downtime.
Our MRI Repair Process
Pull and read the full system message log — not just the headline error
Isolate the failing subsystem — RF, gradient, table, or patient comfort
Repair or replace at the right level to restore reliable performance
Post-repair verification scan and documentation
Why Choose FDM Enterprises?
25+ years of hands-on GE Signa field service
We find the real cause — not a guess-and-swap
Fast on-site response across the Southeast US
Veteran-owned and hospital-trusted
Call (615) 479-5572 to schedule service or request a quote online.
Our Service Coverage
Tennessee (Nashville, Memphis, Knoxville)
Alabama (Birmingham, Huntsville)
Kentucky (Louisville, Lexington)
On-site service at your facility
Explore Our MRI Services
Frequently Asked Questions
FDM Enterprises services GE Signa Excite, HDx, and HDxt systems (Signa software 9.x through 23.x), along with comparable Siemens platforms, across the Southeast United States.
It means your system flagged a fault on the RF coil chain during Auto Pre-Scan, and it's stopping you from scanning until it's resolved. More than one thing can trigger it, which is exactly why guessing at a fix usually wastes time you don't have.
It means the gradient subsystem isn't confirming ready-to-scan status, and the cause can be in more than one place in that chain. Replacing the wrong part is an expensive way to find out you guessed wrong — we identify the actual fault before anything gets swapped.
Almost any subsystem — coil, RF, or gradient — can trigger it, which makes it one of the hardest faults to self-diagnose. The fix depends entirely on which one it is.
Mid-scan interruptions can come from a number of different places in the system, and letting it go usually means it happens again, often at a worse time. Getting ahead of it keeps your schedule intact.
It's a built-in fail-safe that stops scanning when conditions inside the bore aren't right, and it can be one of several things behind it. It's disruptive to have happen with a patient already on the table, so it's worth getting looked at quickly.
Yes. RF amplifier faults are diagnosed on-site, and when the amplifier itself is confirmed as the point of failure, we replace and calibrate it to get you back to reliable scanning.
FDM Enterprises offers a cost-effective alternative to OEM service contracts with the same level of expertise. Our veteran-owned team provides personalized service, faster response times, and comprehensive documentation without the overhead of a large OEM contract.