Kenwood KR-5600 Tuner Dial string killed my confidence :)

RetroStereo

RetroStereo

New Member
Hello AK experts! This is my first post and it is long overdue since I have been checking this forum for a while and been grateful to all the great advice provided here. AK gave me the confidence to get into the 60s and 70s audio gear without any previous knowledge of electronics. First I acquired a Pioneer SX780 and was able to fix a faulty STK0050 because of you guys and it is now working like a charm. Also got a pair of Sansui speakers SP-2500 and successfully did a full recap. So my confidence (read Cockiness :) ) level got bigger and bigger :) But today a little white cotton string shattered that confidence in no time :)).
Through the SX780 I introduced my 16 year old son to vinyl and listening to non digital music and he was hooked. So last week I decided to surprise him and got him a Kenwood KR-5600 from Goodwill I grew up with the same receiver as a kid. Unfortunately after plugging the receiver it turned out that no sound was coming out of the speakers. After reading some old posts i was able to locate that the problem was with faulty transistors. So to make the story short, while trying to access the amp board, i accidentally disconnected the dial string, i told myself no big deal I'll take of it later...boy was i wrong. After several painful hours of researching and a couple more hours just staring at the unit white plastic pulleys from all imaginable angles...i gave up. So i am asking if anyone might have a diagram of the string setup for the KR-5600 or at least pictures of it installed. My son and myself will be greatly appreciative (and my confidence too :) ) - Thank you again and Cheers guys!
 
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If you can find the service manual that should have a stringing diagram. All I can find at the moment is the schematic.
 
Thanks Raccoon1400, I also .have the schematics but like you was not able to locate a downloadable service manual. I found other models but the setup is a bit different. maybe if someone has a manual and would like to take and share a picture of the stringing diagram page that would be appreciated.
 
RetroStereo said:
Thanks Raccoon1400, I also .have the schematics but like you was not able to locate a downloadable service manual. I found other models but the setup is a bit different. maybe if someone has a manual and would like to take and share a picture of the stringing diagram page that would be appreciated.
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Retro,

I have a clean copy of the manual. I can check and scan the appropriate page but it won't be until this evening.
 
Almost impossible to restring without a diagram to guide you. I have done several and it is definitely is not my favorite task. Usually is due to me being careless with a soldering iron. If the original string is intact it may make it a little easier. There are several posts here with some great tips about restringing tuners which can be helpful to avoid common mistakes and reduce the frustration.
 
Awesome! Thank you so much Cuppy for sharing the diagram. The whole process without a diagram was driving me crazy, AK community is the Best!!!!
 
No problem at all. Hope it helps. Dial cord stringing is one of my weak points even with the diagram. Good luck. I love my KR-5600 which presently is performing duty in my office setup.

Let us know how it works out and any tricks or tips you may have. It may help someone else out someday.
 
Alright as you guessed, even with the diagram it was not a straightforward process. It took me a dozen trials before i finally got it to work but it i don't think that you can fix it without the Diagram. Let me share with you what worked for me.
First of all, in my case the string was still connected to the spring on both ends, which i would assume will make the process easier (but i might be wrong: it might be easier if it is not connected to the spring like described in the diagram instructions, i was afraid to try it since i did not want to disturb the balance of length vs tension that was working prior to the disconnect).
Anyways the trick that made it work for me was to stretch the spring as much as possible from the get go, while trying to keep the spring as flush to the wheel pinion as possible, I get a tension on the spring by pulling on the string while making the loop around the wheel (Step 1 on the Diagram) Make sure to have someone block the wheel from turning while you are keeping the tension on the string as you go through the pulleys and especially when you are making the 2 loops around the dial shaft. Continuously maintaining the tension on the spring was key in getting it to work. So now that i got it back to what it was, i am going to try to locate the faulty transistors on the amp board. Wish me luck! you guys might hear from me very soon :) . Cheers and thanks again.
 
I fought that on a kr-9600 and it is essentially the same process. The instructions are clear as mud also. But then it finally clicked, and the key was the "Boss B" thing. "Boss B" is a little peg on the pulley. After the string is tied to the spring -leaving a tail - streeeetch the spring and hook the end of it onto the peg. This gives proper spring tension. Then wrap the string per the instructions, which is pretty easy, just keeping the slack out of it. Then tie the string to the little tail you left in the first step (hardest part). The last step is to remove the end of the spring from the peg (Boss B) which pulls proper tension on the string.

This job is much easier if you don't have hands the size of toilet seats.
 
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