Marantz 6300 owners please help

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Rick110
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Marantz 6300 owners please help

Post by Rick110 » 19 Jan 2020 23:54

I just re-capped and replaced all the switches on my 6300. Was very careful to take photos and do one item at a time. Re-cap went great, but even with photos and writing down wire color to switch designated tab for each switch as I replaced them, I ended up with a white/black stripe wire coming from J813 that is not connected and I don’t see it on any of the switches in my photos. Another white/black stripe wire comes from J813 and runs to the ground nut on the motor. Would appreciate help from another 6309 owner.

lenjack
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Re: Marantz 6300 owners please help

Post by lenjack » 20 Jan 2020 01:13

Check the schematic and service manual in the Library at the top of this page.

Rick110
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Re: Marantz 6300 owners please help

Post by Rick110 » 20 Jan 2020 02:30

Lenjack, thanks for your response. I have downloaded both. The problem is that the service manual itself is for version one, I have v2. Even with the 1976 supplement, there is no wiring diagram Luke you would normally see that would show wire colors for you to be able to trace.

cary114
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Re: Marantz 6300 owners please help

Post by cary114 » 20 Jan 2020 02:48

Looking at the schematic, the wire runs not to a switch but to the negative side of the diode bridge. It would be a couple of days for me to actually look and open up my 6300 to verify physical wiring.

Cary

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Re: Marantz 6300 owners please help

Post by Rick110 » 20 Jan 2020 03:42

Cary114,
It would be awesome if you would do that. If you could take a pic to show where it goes I would really appreciate it. I just recently bought this and have been restoring it. Thank you so much for the help.

62vauxhall
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Re: Marantz 6300 owners please help

Post by 62vauxhall » 20 Jan 2020 07:36

On the more than one occasion where I've been faced with a detached wire, I examine any and all possible places within reach of the wire where a solder connection can be made.

With a high intensity lamp and a miniature magnifying glass, small enough to hold directly over potential solder points, I look for any hint of a wire having come free. A protrusion of solder, a minute glint of copper, the remnant of a stray wire strand can sometimes be noticed.

cary114
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Re: Marantz 6300 owners please help

Post by cary114 » 22 Jan 2020 19:20

Opened up my 6300 finally. The black/white wire goes to a solder stud on one of the motor nuts. I will publish pictures shortly.

Rick110
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Re: Marantz 6300 owners please help

Post by Rick110 » 22 Jan 2020 20:21

Cary, I have two wire coming from J813. One goes to the motor but, which is intact from J813 to the motor but. The other white/blk wire coming off of J813 is very short and is attached to J813, but loose on the other end. I have looked at about every photo I can find in forums and on-line and it appears that the short wire is attached to what I think someone called the bridge. I actually see two terminals on the bridge that do not have wires attached. One has never been soldered, the other has solder on it, but no wire. That terminal appears to be grounded and I think it is where I need to re-attach the loose wire to. I lol forward to seeing your pics and I thank you.

Rick110
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Re: Marantz 6300 owners please help

Post by Rick110 » 22 Jan 2020 20:23

Cary, I have two wires coming from J813. One goes to the motor nut which is intact from J813 to the motor nut. The other white/blk wire coming off of J813 is very short and is attached to J813, but loose on the other end. I have looked at about every photo I can find in forums and on-line and it appears that the short wire is attached to what I think someone called the bridge. I actually see two terminals on the bridge that do not have wires attached. One has never been soldered, the other has solder on it, but no wire. That terminal appears to be grounded and I think it is where I need to re-attach the loose wire to. I lol forward to seeing your pics and I thank you.

cary114
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Re: Marantz 6300 owners please help

Post by cary114 » 23 Jan 2020 04:41

Well I don't think the picture I took will be much help. I saw the black/white wire and just assumed that was it. So I will reopen the turntable up and break apart the wire bundles around J813 if you need it.
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Rick110
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Re: Marantz 6300 owners please help

Post by Rick110 » 23 Jan 2020 05:02

Cary, I sure hate to ask you to do that, but I would sure feel better knowing I am attaching the wire correctly. But i sure thank you for doing that.

cary114
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Re: Marantz 6300 owners please help

Post by cary114 » 24 Jan 2020 19:33

Rick110 I was able to trace that wire and get a fuzzy picture. It is really buried well. It is on the small power board where the incoming power is distributed. It is on the leg that is in-between the large capacitator. It will be a challenge to solder back on wish you luck.
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Rick110
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Re: Marantz 6300 owners please help

Post by Rick110 » 24 Jan 2020 19:39

Cary,
If you still have that open, would you count from the left and let me know what number that is? Or, is it the only wire attached to that terminal? If it is, I know which one it is.
Again, I really appreciate you going the distance to help me with this. Thank you. Rick

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Re: Marantz 6300 owners please help

Post by Rick110 » 24 Jan 2020 19:42

I believe that terminal extends to and is attached to the turntable.

cary114
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Re: Marantz 6300 owners please help

Post by cary114 » 24 Jan 2020 20:33

It is the second from the front of the housing, Third from the back. It is in-between the legs for the Capacitor. It very well could be a neutral point for the turntable. I did notice a screw holding the board down and it could be traced to the screw.

Cary

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