But on hifiengine.com you can download a few manuals for service thats most important i have also not found a real usermanual ....copy .pdf indeed. But only a service manual because of the long time its old now it can be neccesary for change some capacitors because of it can having low capacitance on it. because its an 48 years old but funny quality amplifier. the materials are not bad ( for that early days ) but cleaning contacts and the phenolpaper electric board circuits that time everywhere was used it can be neccesary if its having a little more history then that its only a second hand machine. Be allways carefull with working in this amplifiers right before doing procedings BE AWARE its not the first time i have encountered that there where is once in the time it could have once standing not shielded in a room that was be wallpapered and the wallpaper paste was indoors created. in the sixtees there was much paste made of methyl celluloce it can be very active the dust of methyl celluloce , because it can lead high static electricity on the components over years after the time its old. To avoid shortings you will not see because a warm moist fingerpressure there can be create a highly conductive path that can be measured but can not see This is maddening if you do not know where to look. Before any handling its the best going Outside the house take a canister liquid air and spray him intermittently the canister upside down so that the liquid print clean syringe, sometimes there are to see some freezing places that's not bad, but the print circuit is spotless from methylcellulose and nicotine and other substances in the nearly 50 years of existence before to clean or soldering if you will begin to service the amp for replacing capacitors or new adjustment potentiometers because the the resilience of the metal adjusters on the original old adjustment potentiometers is almost 0 and to remake new adjustments for bias current adjustment a service manual is needed. They can be last for a very long time, but the change of in particular the common resistors because of the end caps which are also going through falter heat and shrink the years. is always thoroughly recommended service so that all active components again may result in years without excessive tolerance deviation.
What you do and might not need depends on the period how the amplifier looks like, I myself am since 1980 with various audio repairs engaged with both tube devices but also encountered several other difficult chores and hard way become in the meantime. and still am fitter but mainly power toolsBut on hifiengine.com you can download a few manuals for service thats most important i have also not found a real usermanual ....copy .pdf indeed. But only a service manual because of the long time its old now it can be neccesary for change some capacitors because of it can having low capacitance on it. because its an 48 years old but funny quality amplifier. the materials are not bad ( for that early days ) but cleaning contacts and the phenolpaper electric board circuits that time everywhere was used it can be neccesary if its having a little more history then that its only a second hand machine. Be allways carefull with working in this amplifiers right before doing procedings BE AWARE its not the first time i have encountered that there where is once in the time it could have once standing not shielded in a room that was be wallpapered and the wallpaper paste was indoors created. in the sixtees there was much paste made of methyl celluloce it can be very active the dust of methyl celluloce , because it can lead high static electricity on the components over years after the time its old. To avoid shortings you will not see because a warm moist fingerpressure there can be create a highly conductive path that can be measured but can not see This is maddening if you do not know where to look. Before any handling its the best going Outside the house take a canister liquid air and spray him intermittently the canister upside down so that the liquid print clean syringe, sometimes there are to see some freezing places that's not bad, but the print circuit is spotless from methylcellulose and nicotine and other substances in the nearly 50 years of existence before to clean or soldering if you will begin to service the amp for replacing capacitors or new adjustment potentiometers because the the resilience of the metal adjusters on the original old adjustment potentiometers is almost 0 and to remake new adjustments for bias current adjustment a service manual is needed. They can be last for a very long time, but the change of in particular the common resistors because of the end caps which are also going through falter heat and shrink the years. is always thoroughly recommended service so that all active components again may result in years without excessive tolerance deviation. What you do and might not need depends on the period how the amplifier looks like, I myself am since 1980 with various audio repairs engaged with both tube devices but also encountered several other difficult chores and hard way become in the meantime. and still am fitter but mainly power tools
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Marantz 15 Manual Solid State Stereo Power Amplifier HiFi Engine
But on hifiengine.com you can download a few manuals for service thats most important i have also not found a real usermanual ....copy .pdf indeed. But only a service manual because of the long time its old now it can be neccesary for change some capacitors because of it can having low capacitance on it. because its an 48 years old but funny quality amplifier. the materials are not bad ( for that early days ) but cleaning contacts and the phenolpaper electric board circuits that time everywhere was used it can be neccesary if its having a little more history then that its only a second hand machine. Be allways carefull with working in this amplifiers right before doing procedings BE AWARE its not the first time i have encountered that there where is once in the time it could have once standing not shielded in a room that was be wallpapered and the wallpaper paste was indoors created. in the sixtees there was much paste made of methyl celluloce it can be very active the dust of methyl celluloce , because it can lead high static electricity on the components over years after the time its old.
To avoid shortings you will not see because a warm moist fingerpressure there can be create a highly conductive path that can be measured but can not see This is maddening
if you do not know where to look.
Before any handling its the best going
Outside the house take a canister liquid air and spray him intermittently the canister upside down so that the liquid print clean syringe, sometimes there are to see some freezing places that's not bad, but the print circuit is spotless from methylcellulose and nicotine and other substances in the nearly 50 years of existence before to clean or soldering if you will begin to service the amp for replacing capacitors or new adjustment potentiometers because the
the resilience of the metal adjusters on the original old adjustment potentiometers is almost 0 and to remake new adjustments for bias current adjustment a service manual is needed.
They can be last for a very long time, but the change of in particular the common resistors because of the end caps which are also going through falter heat and shrink the years. is always thoroughly recommended service so that all active components again may result in years without excessive tolerance deviation.
What you do and might not need depends on the period how the amplifier looks like, I myself am since 1980 with various audio repairs engaged with both tube devices but also encountered several other difficult chores and hard way become in the meantime. and still am fitter but mainly power tools