Luxman 1500 Receiver Disassembly - diyAudio
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Old 23rd August 2005, 08:48 AM   #1
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Default Luxman 1500 Receiver Disassembly

Need to pull this apart and clean it, but tuner knob will NOT come off. No hole for a set screw, and no hidden screws just behind the front panel ala Yamaha.

Sucker won't budge. Not a bit.

Anyone worked on one of these? Any tricks or ideas? I sure would be bummed to break something...it's a beautiful receiver.
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Old 23rd August 2005, 09:40 AM   #2
dnsey is offline dnsey  United Kingdom
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If it is a push fit (I don't know), the recommended method is to loop string round the shaft behind the knob and pull on the ends.
It's always possible, of course, that it was loose, and has been glued in place by a previous owner (wouldn't be the first time...)
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Old 23rd August 2005, 11:36 PM   #3
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I like the string idea...I'll have to give that a go.

I do believe some clod has glued the thing. Nightmare....
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Old 24th August 2005, 12:52 AM   #4
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Well, that didn't work. Nearly pulled my fingers out of their moorings trying to pull the knob off with string.

Any ideas from the fix-it crowd that has been doing this for 30 years?
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Old 24th August 2005, 01:04 AM   #5
anatech is offline anatech  Canada
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Hi Echowars,
Hey, I resemble that remark!!

I was sure it's a splined shaft that just pulls off. Try putting two folded business cards above and below each of two flat blade screwdrivers. Pry equally with both until it comes off. They can get pretty attached sometimes.

-Chris
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Old 24th August 2005, 01:06 AM   #6
anatech is offline anatech  Canada
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Try knocking on the front side in a few times. Again use something so you don't marr the finish on the knob.

-Chris
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Old 24th August 2005, 01:18 AM   #7
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Yep...it's splined.

I actually got it off...I'm totally amazed!!!!!!!

I used some 22ga wire instead of string, and instead of letting my fingers take the punishment, I wrapped the wire around a long screwdriver and pulled on it. After a bit of tugging, it came off and I flew back and landed on my @ss. I was so happy I didn't care.

It was glued for sure. Now I gotta get that old glue off...
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Old 24th August 2005, 05:06 PM   #8
ilimzn is offline ilimzn  Croatia
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Had this problem once or twice... usually the splined shaft either gets compressed and loose, or broken, and the user then superglues the knob on. You were lucky to get it off without causing other damage. I had two instances where I had to take extraordinary measures. On a Marantz 1040 amp, I had to disassemble the selector switch leaving the shaft inside the knob and front plate, tyhen heat up the shaft metal with my soldering iron from the inside until the glue let go. A similar problem with a Technics tuner required me to do a re-string of the tuning dial (which is something I truly hate!), this time it was epoxy and it required heating up the shaft from the inside with a Weller Pyropen (gas soldering iron)! In both cases problems were so minor with the components themselves that the amount of work needed to take care of stupid user tricks cost more than the component itself...
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Old 25th August 2005, 03:26 AM   #9
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I can't believe some of the things people do...and glued-on knobs are a nighmare.

Got a buddy with a KA-9100 and a glued-on volume knob. It needs preamp work, but till the knob comes off it ain't happenin'.
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