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LEEM PRO 105C POWER AMPLIFIER SECTION

I AM LOOKING FOR A CIRCUIT DIAGRAM FOR THE LEEM PRO AMPLIFIER SECTION

THANKS ERIC

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5 Suggested Answers

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SOURCE: Harman Kardon avr 1500 service manual

try here - http://www.harmankardon.com/product_support/support_detail.aspx?prod=AVR500

Posted on Dec 16, 2007

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SOURCE: leem power mixer spare part

Have you tried a 2sd6041? sometimes japanese trannys use this prefix.

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SOURCE: leem m86t power mixer amplifier

probably blew the amps or the pre amp section

Posted on Oct 08, 2008

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SOURCE: circuit diagram of 1400 watt woofer amplifier

www.the12volt.com/ subwoofer wiring diagrams and then find out what ohm of sub u have and how many voice coils and what ohm your amp is stable at.

Posted on Jun 14, 2009

mislamy15m
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SOURCE: Circuit diagram Samsung LE23R88BDX - LCD TV

when I turn off and then Turn on after 10 minutes the TV notwork(by using remote or touch button). I try to disconnect power supply andthen reconnect and waiting a couple of minutes and turn on but no work (nosound and black desktop) .I repeat this procedure many times so some timework and sometimes not work. please help me to solve this problem

Posted on Aug 28, 2011

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I have had problems with this stereo mixer amplifier which had the symptoms of no sound output from either channel .

I opened up the unit and discovered that the amplifier was correctly amplifying my input signal up to a relay which switches the output through to the speakers .

This relay did not activate at all.

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Q804 turns On Q805 which turns On Q806 to activate the relay .

Voltages on transistors

Q802 and Q803 2sc1815

Base 0V Collector 12.9V Emitter 0V


Q804 2sa1015

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Q805 2sc1815 (driver for Q806)

Base 0V Collector 7.2V Emitter 0V


Q806 2sc1815

Base 0V at Turn ON then after 2 secs increases to 0.7V

Collector 2.8V ( transistor is activated as a switch Turned Fully ON ( saturated) to turn on the Load which is the relay .

Emitter 0V


I have replaced the following transistors to fix my amplifier q805 2sc1815 and q806 2sc1815 .If you are going to use a different type of transistor it may not work and also the lead connections of a 2sc1815 for the collector and emitter are different to those such as on a 2n2222( transposed).

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