Industrial Power Supply Repair
Dead or unstable industrial power supplies — PLC rack supplies, CNC control supplies, DIN-rail 24VDC units, and OEM machine supplies that are obsolete or long-lead. Board-level repair with full load testing.
Common PLC rack supplies are flat-priced; unusual OEM supplies get a free evaluation and quote.
✓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
Power Supplies repair services
What this category covers
- ▸PLC rack power supplies (1746, 1756, S7)
- ▸CNC control power supplies
- ▸DIN-rail 24VDC supplies
- ▸OEM machine power supplies
- ▸Obsolete / discontinued supplies
Failures we see every week
- ▸No output / dead supply
- ▸Output sag under load
- ▸Bulged or leaking capacitors
- ▸Start-up failure when warm
- ▸Blown input stage after surge
Frequently asked questions
How do I confirm the power supply is the problem?
A completely dark rack, or faults that appear as the panel warms up, point at the supply. If you have a spare, a swap test confirms it. If it tests good on our load bench, we tell you, charge only the $95 test-and-verify fee, and refund the rest.
Why repair a supply instead of buying used?
A used supply of the same vintage carries the same aged capacitors that just failed in yours. Our repair replaces the wear items with new components and load-tests at rated output — with a 24-month warranty a surplus unit won't give you.
Machine down? Let's get it back up.
Start a repair online in two minutes, or send us the part number for a free technician review.
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