Jack Sewing Machine PCB Repairing

PCB and control board repair for Jack industrial sewing machines. Jack's direct-drive machines — the A2, A4 and A5 lockstitch series, the 9100 single needle, the 781 and 1790 buttonholers, the JK-1900 bartacker and the overlock range — put the drive electronics and the controller in an integrated box under or behind the table, which takes heat, lint and vibration in ordinary use.

Jintex repairs these units at component level in Bangalore. The faults we see most: power stages that fail from lint-blocked cooling, control boards damaged when a motor connector works loose under vibration, panel and speed-control inputs that stop registering, and boards that lost their output stage after a heavy jam. Rather than swap the whole control box, we trace the failed section and repair it.

Send the board or control box with a ₹800 inspection charge. We diagnose and quote the repair before any work begins, so you approve the cost first. The inspection charge covers the diagnosis and is retained whether or not the unit can be repaired — a board with widespread burn damage is sometimes beyond economic repair, and we say so directly.

Turnaround is 6 working days from receipt, with a 3 month warranty on the repair. Send your Jack model and what the machine does (or doesn't do) on WhatsApp and we'll tell you what to check first.