TROUBLESHOOTING OF TRANSFORMER AND CHECKS
Transformer can fails down in many
ways. Some of the various failures are:
- Wire coil rotating to
can open.
- This can happen where a copper wire coil connected with the terminal lugs.
- Transformer coil windings can make a break in the lines near the coil wire .Can be shortened
- Transformer coil windings of primary and secondary can become shorted to another one.
- Transformer coil windings of primary and secondary leak can develop high resistance.
- Transformer coil windings due to the collapse of the metal core insulation, If transformers, or frame.
- Power a Transformer may heat up , and start leaking of wax material Issue and perhaps smoking and burning.
If you recognize your own
equipment burning smell and look up some of the wax is melted Inside the
enclosure located in the adapter, power supply and make it immediately turn off
or disconnect the device. You may find the same symptoms, if your equipment
stops dawn working and valves. Usually will not be harmed power transformer
over-heated problem that caused this situation is part of another component has
to shorten Outside.Such failures of components will be shorten average diode,
capacitors electrically candidate, Transistor regulator or bypass capacitors. You
can use the meter to check the resistance of all the shorts Or low resistance
in the B+ Supply lines .Below in the figure shows how you can check the leakage between
the primary and secondary of the transformer.With the primary winding voltage
DC powered and any effort measurement with your voltmeter excellent points on
two minor fluctuations. If you find even a very small force, it has the adapter
and leakage and should be replaced. The measure is used to check the resistance
across the open each winding. Make sure Power is turned off or disconnect the
device for measuring resistance to test this.
fig: How to use an ohmmeter or voltmeter to check windings of a power transformer
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