Question about Harman Kardon HK595 Computer Speakers

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U1, p16ne next to u2, ta8225h are both shorted, replaced both, system still will not power-on, u1 is a power mosfet.

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I have a set without power cord or adapter. You can have it..

Posted on Nov 11, 2010


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the motor will have 3 pairs that can be checked with a ohm meter for continuity. each pair has a start and a finish. usually it would be labelled U1 V1 & W1 for the start and U2 V2 & W2 for the end or finish.

To connect in star ( Motors that start with direct load ) supply cables to U1 ( Red ) V1 ( White ) W1 ( blue ) and bridge out U2 V2 & W2.

To connect in delta Supply cables as above. Bridge U2 to V1 - Bridge V2 to W1 - Bridge W2 to U1.

If you have a reversed winding the motor will growl and not turn.
To reverse direction of rotation swap any 2 supply cables ( But only when the power is OFF )

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When the power supply is connected to motherboard it goes off itself

problem lies in the motherboard there is mosfets on the motherboard which is short and because of short circuit protection power supply goes off itself so either replace the motherboard or repair

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ED14 on the powersupply of lrm-519 need replacing

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