Siemens · SIMATIC Multi PanelObsolete / discontinued
6AV6644-0AB01-2AX0 Repair
Siemens SIMATIC MP377-15 Touch (6AV6644-0AB01-2AX0). The dominant board-level failure across SIMATIC panels is the power supply (aged electrolytics), with touch and backlight wear close behind — all repairable with the WinCC project preserved.
Known failures on the 6AV6644-0AB01-2AX0
- ▸Dead unit / will not power on
- ▸Powers on then restarts
- ▸Touch not responding
- ▸Dark or dim display
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.
Not your exact model?
Search the catalog or send us the number on your unit's label — we service far more than the catalog shows.
Frequently asked questions
Can the 6AV6644-0AB01-2AX0 be repaired?
Yes — dead unit / will not power on, powers on then restarts, touch not responding are the failures we commonly repair on the SIMATIC Multi Panel platform. The flat price is $549 including parts, testing, and the 24-month warranty.
How long does a 6AV6644-0AB01-2AX0 repair take?
Standard bench time is 3–5 business days once the unit arrives. Rush service (+$149) moves it to 1–2 business days, and emergency same/next-day attempts are available — contact us first.
How do I send it in?
Start the repair online to get an RMA number instantly, pack the unit well with the RMA on the box, and ship it to our Dallas–Fort Worth lab with any carrier. Full packing guidance is on the mail-in instructions page.
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