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Mecer / Lobo inverter charger fault


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Posted

My inverter a Mecer 1200VA does not charge the battery. What normally fails on these?

What must I look for and where is the charger circuitry situated on the CCT board?

Posted

According to the service manual I posted in another thread, look for TX5. It looks from the service manual that it must be on the main board, though I thought it was a separate PCB.

20 hours ago, wigs said:

What normally fails on these?

I have no idea. But my wild guess would be the switching transistors, and/or their gate driver components (Rs and Ds), possibly the source resistors, snubber components (across drains and sources), and least likely the oscillator chip or associated components (sadly not in the schematic diagram Figure 3.4).

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