[Jukebox-list] (no subject)

[Karl]

Jens,
Yep, it's a 120 select model.....with a 200 select model sitting right next 
to it that I haven't touched yet. This customer owns both. I'd have rather 
found someone in the Mobile, AL to tackle these but since I didn't, and it's 
a friend of a friend, I agreed to give it a shot.

I'm figuring on removing the assembly and give it a careful cleaning and try 
to leave the adjustments alone for now unless I see something really out of 
whack.

Thanks for the advice....I'm sure I will have more questions before I finish 
this one.


Karl
Columbus Coin-Op Shop
Columbus, GA 31903
(706) 507-2963
2061 S. Lumpkin Rd.





Columbus, GA 31903
(706) 507-2963
----- Original Message ----- 
From: "Jens Hultgren" <drjukebox at gmail.com>
To: "Jukebox mailing list" <jukebox-list at lists.netlojix.com>
Sent: Tuesday, January 09, 2007 7:50 AM
Subject: Re: [Jukebox-list] (no subject)


> A-F sounds like a 120 selection model.
> You may have to take the pulse converter apart and clean the segments and
> wipers, on both sides of the boards. Then the wipers should be adjusted so
> that they are centered on the segments. If they are on the edge of some
> segments (say C and D) than it can miss some selections.
> Be forewarned that the rotating wipers are held by hex nuts, and if you
> loosen these the black plastic they're mounted in is brittle and prone to
> crack. And then you're in more trouble (anyone reproduce these??). 
> Probably
> better to just reach in there with a cotton pin soaked in alcohol and 
> clean
> up.
> The wipers are fragile too, often the ends are broken off, but I think 
> those
> are available new now.
>
> With a trained ear, you can hear if the pulse trains are ok or if it is
> missing some segments. The pulse generator wiper must be clean and have 
> some
> pressure against the segments. The circular board is sometimes warped....
>
> There are so many things that can go wrong on these electrical selectors,
> making them sometimes a real headache to get working reliably. ESPECIALLY 
> if
> the owner has been there and tinkered with all the adjustments. So the
> manual selector is much, much simpler. But then you can not use a wallbox.
>
>
>      Jens (in Sweden)
>
> On 1/9/07, Ron Rich <ronnnrich at yahoo.com> wrote:
>>
>> Karl,
>>   Those models operate just like a  'remote wallbox". They have a "pulse
>> generator" and a "pulse converter".  The generator is what is found in a
>> wallbox (or, in this case, the "selector" inside these model phono's. It
>> "pulses" various times depending on the letter number combination 
>> selected.
>> The "converter" is called a "stepper" by most other brands. It follows 
>> the
>> pulses (or "steps-up") and "converts" it into a form that can then be 
>> used
>> to "pull" the selected pin. Different companies used different "pulse
>> trains" to achieve this, but they all used two "stepper gears" (or 
>> "wheels")
>> and sliding contacts, of some type, to "matrix" the info.
>>   It sounds like the "alignment" may be slightly off, or one or more of
>> the sliding contacts on the rear of the converter are bent/broken.
>>   Hope that clears it up--a little. Ron Rich
>>
>> Karl <karlh44 at knology.net> wrote:
>>   Well, I wound up with this AMI Model H. I have gotten most things to
>> work on it but I am having trouble with the selection system. It will 
>> Select
>> the correct record for letters A & B and E & F but not C & D. I have the
>> manual but I am having a hard time understanding the "Pulse" concept. It
>> sounds like it allows the converter to rotate longer or shorter depending 
>> on
>> the letter/number chosen??? I admit this is probably fairly elementary to
>> those who know these older jukeboxes, but I don't. if I understood what 
>> is
>> supposed to happen, I'd probably stand a better chance of figuring out 
>> why
>> it isn't happening...hehehe. Any help would be appreciated.
>>
>>
>> Karl
>> Columbus Coin-Op Shop
>> Columbus, GA 31903
>> (706) 507-2963
>> 2061 S. Lumpkin Rd.
>>
>>
>>
>>
>>
>> Columbus, GA 31903
>> (706) 507-2963
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