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Marantz 1060 amp dead channel
Marantz 1060 amp dead channel
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Old 17th February 2013, 08:34 PM   #1
healeyarchaeologist is offline healeyarchaeologist  United States
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Default Marantz 1060 amp dead channel

I have a dead channel in my Marantz 1060 amp. One channel sounds great, no fuzz or crackling. I bought this new in high school in 1974, so it has sentimental attachments. Anyway, one thing led to another and now I have three more amps and lots of parts. I have replaced the 4 power transistors, P700 power board, P400 preamp board and toally de-oxit the entire amp and pots. I also replaced the big 3000mf cap for the dead channel. Nothing. In the meantime, I picked up another amp with the same problem. All that I have is a VOM and my high school electronics class was almost 40 years ago, so I'm really flying by the seat of my pants. Please help! Thanks in advance.
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Old 17th February 2013, 11:38 PM   #2
rsavas is offline rsavas  Canada
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Go to audiokarma.com, lots of help there. they have special section for Marantz only. Find the schematics/service manual, start doing some testing.
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Old 17th February 2013, 11:45 PM   #3
healeyarchaeologist is offline healeyarchaeologist  United States
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Default Marantz 1060

I've got the schematic. It doesn't give the colors of the wires though. I also have the trouble shooting manual. I only have a VOM though. I have thus far basically tried the shotgun approach replacing many things to no avail. Now I'm starting to think that it is a simple dead short somewhere on the amp, maybe on the controls or output connections.
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Old 17th February 2013, 11:46 PM   #4
rsavas is offline rsavas  Canada
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Hi-Fi Engine as the SM,
Marantz 1060 | Owners Manual, Service Manual, Schematics, Free Download | HiFi Engine
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Old 17th February 2013, 11:47 PM   #5
stratus46 is offline stratus46  United States
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Quote:
Originally Posted by rsavas View Post
Go to audiokarma.com, lots of help there. they have special section for Marantz only. Find the schematics/service manual, start doing some testing.
Sounds more like he's attempting to 'shotgun' it with unknown functioning parts. I haven't worked on one in ages but I don't remember it being difficult but that assumes you have test signals, a meter and scope and known good parts.

G
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Old 18th February 2013, 12:08 AM   #6
healeyarchaeologist is offline healeyarchaeologist  United States
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I have replaced old parts with new and circuit boards with good ones that are working.
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