Mitsubishi Electric
Mitsubishi GOT HMI Repair (GOT1000 / GOT2000 / A900) — Mail-In
Board-level repair for Mitsubishi GOT operator terminals. GOT1000 is discontinued with OEM service ending 2027; backlight and touch failures are the dominant faults and both repair cleanly. Flat $449.
Coverage: GOT1000 (GT15 / GT11 / GT10) · GOT2000 (GT27 / GT25 / GT23) · legacy A900 series
✓Fixed — or it's free
Unrepairable units are refunded; evaluations cost $0
✓24-month warranty
Every repair covered, parts and labor
✓3–5 business days bench time
Rush (1–2 day) and emergency service available
✓Program preserved
Your application and settings stay in the unit
Symptoms this repair fixes
- ✓Dark screen / failed backlight
- ✓Touch dead spots or drift
- ✓No power
- ✓Boot problems
- ✓Comm failures
Honest limits
- ✕Destroyed LCDs quoted first
What you get
- ▸Diagnostic + board-level repair
- ▸CCFL backlight repair or LED conversion
- ▸Touch digitizer replacement included
- ▸Power repair and recap
- ▸Project preserved
- ▸24-month warranty
Your program is safe
Project data (internal flash or SD) is preserved.
Typical part numbers
Part-number pages for this service
How Mitsubishi GOT units actually fail
Most units we receive fail in one of a handful of well-understood ways. Here is what each fault looks like from the machine, what is happening electronically, and what we do about it at the bench.
Backlight failure
- What you see
- Screen goes dark while the terminal continues running normally.
- Why it happens
- Backlight assemblies wear out with hours in service. On a GOT the underlying display and video path typically remain fine, which is why a faint visible image is such a reliable diagnostic.
- What we do
- The backlight assembly and drive circuitry are repaired or replaced and brightness verified across the panel.
Touch panel failure
- What you see
- Dead or inaccurate touch response, often localised to specific areas.
- Why it happens
- Touch layer wear concentrated where operators press repeatedly, plus fatigue in the flex connection.
- What we do
- The touch panel is replaced and calibration checked across the full screen.
Power supply and boot faults
- What you see
- Dead unit, resets, or a terminal that will not complete startup.
- Why it happens
- Aged supply capacitors producing rails that collapse under the current draw of initialisation.
- What we do
- Capacitors are replaced, rails verified under load and repeated cold boots confirmed.
What happens on the bench
The same sequence on every 5-stage repair, so nothing gets skipped because a fault looked obvious.
- 1
Intake and symptom replication
We log the unit against your RMA and power it on the bench to reproduce what you reported. A terminal that boots fine for us is worth knowing about early — intermittent faults are usually thermal or a marginal power rail, and both change what we test next.
- 2
Rail and power-supply measurement
The internal supply is measured under load, not just at idle. Aging electrolytic capacitors lose capacitance and gain equivalent series resistance, so a rail can read correct on a meter and still collapse the moment the backlight or processor draws current. Ripple is checked on a scope rather than assumed.
- 3
Display, backlight and touch isolation
A dark screen is separated into three different repairs: a failed backlight (image still faintly visible under a bright light), a failed inverter or LED driver, or a genuinely failed LCD. Touch faults are isolated to the digitizer, its flex tail, or the controller before anything is replaced.
- 4
Board-level repair
We replace the failed components — capacitors, backlight assembly, digitizer, driver circuitry — rather than swapping whole boards. Where capacitor aging is found on a supply, the set is replaced, because the ones that have not failed yet have lived the same thermal life as the one that did.
- 5
Functional test and burn-in
The terminal is booted repeatedly from cold, the touch grid is calibrated and checked corner to corner, communication ports are exercised, and the unit is left running to catch faults that only appear once it is warm.
Check these before you ship
Some of these will tell you the unit is fine and the fault is elsewhere. We would rather you find that out now than pay to ship a good unit.
- □Confirm the supply feeding the terminal is actually delivering its rated voltage under load — a failing panel supply mimics a dead HMI exactly.
- □Shine a bright light at an angle across a dark screen. If you can make out the application faintly, the LCD is alive and you have a backlight fault, which is a cheaper and faster repair.
- □If the unit boots but the touch is wrong only in one region, note where. Localized dead zones point at digitizer wear; whole-screen drift more often points at the controller.
- □Note the exact text of any boot or fatal error. The code narrows the fault far faster than "it will not start".
- □Back up your runtime application if you have a copy — we preserve what is on the unit, but a backup is cheap insurance on any repair.
Repair or replace?
Operator terminals are the clearest repair-over-replace case in a plant. Much of the installed base is discontinued with no drop-in successor, so replacing means specifying new hardware, re-developing or converting the application, re-testing it against live machinery, and retraining operators on a screen that behaves differently. The repaired terminal drops back into the same panel cutout running the same application. Even where a successor exists, the migration engineering usually costs several times the repair.
What to ship
- ▸The terminal only
- ▸Symptom description with your RMA number
Full packing guidance: mail-in instructions.
Ship your unit to
USPS
Control Board Lab
PO Box 120241
Arlington, TX 76012
UPS / FedEx
Control Board Lab
1009 Oakwood Ln # 120241
Arlington, TX 76012
Write your RMA number on the outside of the box and include it on a note inside. Units over 50 lb (large VFDs, spindle drives, industrial PCs in enclosures) ship by freight — contact us before ordering and we will arrange dock-to-dock shipping.
Frequently asked questions
Mitsubishi still services the GOT1000 — why use you?
OEM service for GOT1000 is scheduled to end in 2027, quotes route through distributors, and turnaround is typically weeks. We repair the same faults in days at a published price — and we keep servicing the platform after the OEM window closes.
Fix it for $449
Buy the repair now, get your RMA instantly, and ship the unit today.
The Fixed-or-Free Guarantee: if we can't repair it, you don't pay for the repair.
Call (817) 799-7332 · 📱 Text us a photo of your unit · Email repairs@controlboardlab.com