Siemens PLC or drive down? We repair what Siemens calls obsolete.
Component-level repair of Siemens SIMATIC S7 PLCs, Sinamics & Micromaster drives, Comfort and Basic HMI panels, Sitop power supplies and ET200 I/O. When the part is end-of-life or on a 16-week lead time, repair is usually days, not weeks. Trusted by Irish manufacturers, dairies, water treatment and packaging lines.
The Siemens automation we see on the bench
If Siemens or your panel builder has quoted replacement on a unit that’s no longer made, talk to us first. We work at component level and source ICs, caps and IGBTs from open distribution — so "obsolete" rarely means "unrepairable".
SIMATIC S7 PLCs
S7-200, S7-300, S7-400, S7-1200 and S7-1500. CPU faults, SF/BF error LEDs, memory and battery issues, dead comms processors, failed I/O modules.
Sinamics & Micromaster drives
Sinamics G120/S120/V20, Micromaster 4, Sinamics G110. IGBT failures, blown DC-bus caps, F-codes (F0001 overcurrent, F0002 overvoltage), dead control and comms boards.
Comfort & Basic HMI panels
SIMATIC TP and KTP Comfort/Basic panels. Touchscreen digitiser replacement, dead backlight, failed PSU section, cracked glass, comms-port damage.
Sitop power supplies
Sitop 24V DC and PSU8200 plant supplies. Failed capacitors, MOSFETs, rectifier and transformer faults — the quiet failure that drops a whole panel.
ET200 I/O & comms
ET200S, ET200M and ET200SP distributed I/O, Profibus and Profinet comms modules, CP communication processors. Card-level repair where economic.
Siemens IPCs & monitors
SIMATIC IPC industrial PCs and industrial monitors. Power-section repair, board-level work, screen and backlight replacement.
S7, Sinamics, Micromaster, Comfort, Sitop, ET200
SIMATIC S7-200 / 300 / 400 / 1200 / 1500 · Sinamics G110 / G120 / S120 / V20 · Micromaster 420 / 430 / 440 · SIMATIC TP & KTP Comfort / Basic panels · Sitop 24V DC supplies · ET200S / M / SP distributed I/O · CP comms processors. Don’t see your exact module? If it’s Siemens automation, send us the part number and we’ll tell you straight whether it’s worth repairing.
How a Siemens repair gets handled
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Call the engineering line first
Tell us the part number and the fault — SF/BF LEDs, F-codes, no power. We’ll triage on the phone and sometimes rule out a fault before you remove the unit.
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Ship it in (or drop it off)
Tracked courier to our Mullingar workshop. Mark production-critical units priority and we’ll handle them first on arrival.
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Free assessment & fixed quote
Visual inspection, controlled power-up, fault confirmation, then a fixed-price quote in writing against your PO reference before we commit any repair.
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Repair, load-test & return
Component-level repair, functional test under simulated load, returned with a written repair report and 12-month warranty. Standard 5–10 working days; rush on request.
Real engineers. Real workshop. Honest pricing.
Component-level skills
Microscope soldering, hot-air rework, BGA work, schematic-led troubleshooting. We fix the failed component instead of board-swapping — you keep the same hardware at a fraction of replacement cost.
Rush turnaround
Standard 5–10 working days; rush on request for units that are stopping your line. Quoted upfront.
NDA & PO procurement
NDA available, PO numbers in your reference format, framework-agreement quoting. See our business page for the procurement side.
12-month warranty
Every Siemens repair backed for 12 months, with a written repair report for your maintenance file.
About Siemens repairs
Siemens says my S7-300 is obsolete and spares are unavailable — can you still fix it?
Usually, yes. End-of-life from Siemens means they’ve stopped selling the module, not that the failed components can’t be sourced. We repair at component level and source ICs, capacitors and power devices from open distribution. If parts genuinely can’t be found, we’ll tell you before you spend anything.
Can you repair a Sinamics or Micromaster drive throwing an F-code?
Yes. F-codes like F0001 (overcurrent) and F0002 (overvoltage) usually point to IGBT, DC-bus capacitor, gate-driver or control-board faults — all of which we repair at component level and load-test before return.
Do you replace touchscreens on Siemens Comfort panels?
Yes — touch digitiser replacement, backlight repair, cracked-glass replacement and PSU-section repair on SIMATIC TP and KTP Comfort and Basic panels.
How fast is a Siemens repair?
Standard turnaround is 5–10 working days. For production-critical units we offer rush turnaround — often 24–72 hours on common drive and PSU faults — quoted upfront.
Is there a warranty on the repair?
Yes — 12 months on every industrial repair, with a written report listing what we found, what we replaced and the before/after test results.
Not Siemens? We repair across the major brands
See our industrial electronics repair overview, or jump to Allen-Bradley / Rockwell repair, VFD & variable-speed drive repair, or HMI & touchscreen repair.
What Irish businesses say about working with us
Siemens fault stopping the line? Talk to an engineer.
Call the engineering line first. We’ll triage, prioritise and get you a written quote fast. Standard turnaround 5–10 working days; rush on request.