Koico · Test & Measurement Instruments
Koico 3550 repair
Get the Koico 3550 repaired rather than replaced. It is matched to an engineer who works on Koico test instruments, and the cost is confirmed before work starts.
Cost confirmed before any work starts · Warranty of 30 days to 6 months
At a glance
The Koico 3550
- Manufacturer
- Koico
- Model / part number
- 3550
- Description
- Meter, earth leakage CLAMP
- Category
- Test & Measurement Instruments
- Service
- Diagnosis and component-level repair, onsite or ship-in
- Warranty
- 30 days to 6 months, confirmed before work starts
Koico equipment in this catalog is listed by model or part number. Send the model from the nameplate and the fault, and it will be matched to an engineer who works on that kind of unit.
Common faults
What usually fails on a unit like the 3550
Test and measurement instruments are judged on accuracy, so a repair has to restore function and then confirm the readings. Calibrators, meters, testers and scopes usually fail in their power section, input protection, display or controls.
Damaged input protection
Blown fuses, resistors and protection devices after measuring beyond the rated range.
Won't power up
Battery, charger or internal supply faults.
Display and keypad faults
Dead or faded displays and unresponsive keys.
Inaccurate readings
Drifted references or damaged measuring circuits.
Test lead and connector faults
Worn sockets and leads that give intermittent readings.
First checks
What to check before calling an engineer
Isolate and lock out the supply, and wait for stored energy to discharge, before opening anything.
Safe for plant staff
- Check batteries and test leads first.
- Note which ranges or functions are affected.
- Stop using an instrument that may read wrongly on live circuits.
Leave to a specialist
- Opening the instrument and repairing its circuits.
- Calibration after repair.
- Replacing input protection with correctly rated parts.
Getting it fixed
How to get the 3550 repaired
What to send with it
- The instrument with its leads and accessories.
- Which functions are faulty.
- Whether a calibration certificate is needed afterwards.
Onsite or ship-in
Technicians work onsite from our Hyderabad base and travel to plants across India; anything that can be removed can also be sent to MachineryFix from anywhere in the country.
Warranty. Repairs carry a warranty of 30 days to 6 months, depending on the item and the repair; the exact term is confirmed before work starts.
FAQ
3550 repair questions
Will the Koico 3550 need calibration after repair?+
If the measuring circuits were involved, yes. Readings are checked after the repair, and certified calibration can be arranged if your quality system needs it.
Does the Koico 3550 have to be sent in, or can an engineer come to the plant?+
Either. An engineer can diagnose it in place and repair it there or take it away, or the unit can be sent to MachineryFix from anywhere in India. The diagnosis and repair cost are confirmed before any work starts.
Is MachineryFix connected to Koico?+
No. Koico and the model name are used only to identify the equipment. MachineryFix is an independent repair service and is not affiliated with or endorsed by Koico.
Other manufacturers
Test & Measurement Instruments from other makers
Koico and 3550 are named only to identify the equipment. MachineryFix is not affiliated with or endorsed by Koico.
3550 down?
Send the fault and what the machine was doing. We'll match an engineer who works on it.