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Audio and Video Talk
The Vintage Audio Section
Advice Sought - Possible Re-cap of mid 70s Kenwood Integrated Amp
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<blockquote data-quote="marantz123" data-source="post: 908083" data-attributes="member: 16849"><p>Taking into account that you have a fault condition, I would resolve/localise that first before doing any major work. A good place to start is cleaning all the pots and switches, and testing the amp for return of the said condition. If the fault is still there, using a good loupe /magnifying glass (30x magnification or more is usually adequate), inspect the solder joints for any cracked/dry joints. Touch up on all joints that look suspect, and where you suspect alot of heat, eg. power transistors, large resistors, driver transistors, power IC's etc. and if a relay is present, inspect its solder joints and if a tranparent cover, see if its contacts look discolored/pitted. Retest for the condition. </p><p>Doing a major recap or disturbing the board while in a fault condition may introduce a new problem or make the underlying problem worse, which could complicates things and will have you guessing what caused any new problem. Obviously we always hope that all goes well, but experience teaches otherwise and its better to work systematically and logically first.</p><p></p><p>Im sure you will get it fixed though. :thumbs:</p></blockquote><p></p>
[QUOTE="marantz123, post: 908083, member: 16849"] Taking into account that you have a fault condition, I would resolve/localise that first before doing any major work. A good place to start is cleaning all the pots and switches, and testing the amp for return of the said condition. If the fault is still there, using a good loupe /magnifying glass (30x magnification or more is usually adequate), inspect the solder joints for any cracked/dry joints. Touch up on all joints that look suspect, and where you suspect alot of heat, eg. power transistors, large resistors, driver transistors, power IC's etc. and if a relay is present, inspect its solder joints and if a tranparent cover, see if its contacts look discolored/pitted. Retest for the condition. Doing a major recap or disturbing the board while in a fault condition may introduce a new problem or make the underlying problem worse, which could complicates things and will have you guessing what caused any new problem. Obviously we always hope that all goes well, but experience teaches otherwise and its better to work systematically and logically first. Im sure you will get it fixed though. :thumbs: [/QUOTE]
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Audio and Video Talk
The Vintage Audio Section
Advice Sought - Possible Re-cap of mid 70s Kenwood Integrated Amp
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