The old-fashioned microwave oven is one of the essential kitchen appliances in the home. It uses a high-voltage transformer to generate microwave energy to heat food. However, as it ages, the transformer may fail, causing the microwave to no longer function properly. This article will introduce you to some old microwave oven transformer repair methods.

1. Check the power supply voltage

First, we need to confirm whether the power supply is normal. Use a voltmeter to measure the voltage at the microwave outlet. If the power supply voltage is insufficient or too high, it may cause the transformer to malfunction. In this case, the supply voltage problem needs to be fixed.

2. Check the fuse

Check whether the fuse of the microwave oven is burned out. If the fuse is burned out, it needs to be replaced. Note that some microwaves may have two fuses and both need to be checked.

3. Check the transformer windings and connections

Use a multimeter to check whether the transformer windings and connections are normal. If a problem is found with the transformer windings or connections, it will need to be repaired or replaced.

4. Replace the baking tube

If the microwave oven cannot heat food, there is probably a problem with the baking tube. Replacing the baking tube is easy. You first need to find the location of the baking tube, then open the top panel of the microwave, remove the old baking tube and install the new baking tube.

5. Replace the transformer

If none of the above methods solve the problem, the transformer may need to be replaced. The transformer is the core component of a microwave oven, so replacing it is not easy. It is necessary to find the transformer of the corresponding model so that experienced technicians can perform the replacement operation.

In short, there are many ways to repair old microwave oven transformers. We need to carefully check and confirm the specific cause of the failure, and then take corresponding repair measures. If you're unsure of the situation, it's best to seek help from a professional technician for repairs.