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OVERHEATING OF OP AMPS ... HELP!!!!

80.58.33.42

Posted by langel on March 21, 2004 at 14:26:50

I HAVE INSTALLED A NEW OP AMP (AD826AN) IN THE ANALOG SECTION OF MY ARCAM CD72T CD PLAYER TO REPLACE THE STANDARD UNITS (JRC2114D), AND I HAVE OBSERVED THAT THEY RUN VERY, VERY HOT FROM THE START.

I HAVE CHANGED TO ANOTHER OP AMP (OPA2604)AND THE SAME OCCURS.

THE VOLTAGE OF THE SUPLY RAILS IS +/-12V.

THE OP AMPS ARE BYPASSED BY EVOX 100pF CERAMIC CAPACITORS.

THE INTERCONNECT CABLE IS VDH THE FIRST ULTIMATE.

THE ANALOG SECTION OF THE CD PLAYER (ACCORDING TO A REVIEW OF WHAT HI*FI MAGAZINE) RUNS IN CLASS A.

WHAT IS HAPPENING?
ARE THE OP AMPS OSCILLATING?
WHAT CAN I DO?

I CAN SEND PICTURES OF THE ANALOG SECTION SHOWING HOW IS ALL CONNECTED.

THANKS IN ADVANCE FOR ANY HELP.

THE INTERCONNECT CABLE IS VDH THE FIRST ULTIMATE.

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