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Tecpro LS 211


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Does anyone have a circuit diagram of a Tecpro LS 211.

I have 3 faulty ones to fix - all with different problems.

The board looks un-usually complex for what is a remote powered 3w amp.


Anyone help please.

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Not a 211 but I fixed a 312 recently which shares a lot of similar circuitry. This one 'squealed' at the slightest provocation. Traced the fault to a dry electrolytic which was used to decouple the vcc/2 divider.


Like most Tecpro kit, the supply is a single 24v rail which gets turned into +/-12v by generating a virtual ground point and referencing all audio to that.

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