STD3 needs 5 minutes to select

Q&A about all types of jukeboxes: Wurlitzer, Seeburg, Rock-Ola, AMI, and more.



Topic author
ken g
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Location: Twin Falls Idaho USA

STD3 needs 5 minutes to select

by ken g » Thu Oct 09, 2014 2:03 am

STD3 jukedox all recapped , black & gray boxes resoldered . This machine works just perfect in every way accept the fact it takes aprox 5 minutes for it to take a selection .
Cold turn on . Select a song , it will scan without picking up the selection till you wait aprox 5 minutes warm up then it works fine all day .


Ron Rich
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Re: STD3 needs 5 minutes to select

by Ron Rich » Thu Oct 09, 2014 4:49 am

Ken,
What, didja "re-solder" on the boxes ?? Did you check -13 and -27 dc when cold/hot ??
Ron Rich


Topic author
ken g
Regular Member
Posts: 98
Joined: Wed Nov 07, 2012 2:56 am
Location: Twin Falls Idaho USA

Re: STD3 needs 5 minutes to select

by ken g » Fri Oct 10, 2014 2:57 am

Hi Ron . I always resolder the long connector pins in the boxes . I have not tested the voltages . I suppose this is done on the test screws at the end on the select chassis .
I have not worked on many of these 70's machines and sure coming up with some strange problems .

BTW ... That ROWE 74 i was having so much trouble with it rejecting then not rejecting . I finally had to ad a wire from the non ground side of the eject circuit to the reject micro switch . It fixed the problem .
As for the original problem i can only guess a wire somewhere inside one of the plastic connectors had lost its connection within one of the pins where its crimped . I had this happen in a pinball machine but i found it by some sort of luck .
After servicing the amp ... sure good sound for such an ugly jukebox !

I saw the customer who got your new computer ( same guy has this std3 ) and he has already read and understood the programing . He has it on basic free play now and really likes your product in his machine .


Ron Rich
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Re: STD3 needs 5 minutes to select

by Ron Rich » Fri Oct 10, 2014 5:00 am

Hi Ken,
I'm still confuzzed--which "long connector pins", in which "boxes" ?? If you are "opening" black and gray boxes to do that, you are taking an awful risk of degrading the LSI. Of the thousands of those boxes I've repaired, I can count the number of "cold soldered joints" I found, on one hand ??
Glad he is happy with the SMC Gen 2 Computer--I think it's the greatest thing since sliced bread---but you might consider me to be somewhat influenced, since I built it-- :lol:
Ron Rich


Topic author
ken g
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Posts: 98
Joined: Wed Nov 07, 2012 2:56 am
Location: Twin Falls Idaho USA

Re: STD3 needs 5 minutes to select

by ken g » Wed Oct 15, 2014 2:03 am

Its routine to resolder the pins in the black & gray boxes . I have done it in every one . I have repaired a few of them by replacing bad transistors .

I have tested the voltages on this STD3 and they are normal cold or warm . Still takes 5 minutes at cold turn on .


Ron Rich
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Re: STD3 needs 5 minutes to select

by Ron Rich » Wed Oct 15, 2014 4:52 pm

Hi Ken,
I sat for days/weeks re-working both black and gray boxes--it is NOT "routine", for me to "solder the pins"--And I would advise anyone not to set a soldering iron onto the boards, unless you know how to, and have taken proper "static" precautions. In fact, if you don't know the proper procedures, you should not even attempt to open one of these as you will degrade the (NLA),LSI.
It's my guess that the problem in this phonograph is mechanism related to the read-out, or trip circuits--like a dirty/poorly adjusted detent switch, and or, the clutch shifting lever switch (2M-1)--- Ron Rich


Topic author
ken g
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Posts: 98
Joined: Wed Nov 07, 2012 2:56 am
Location: Twin Falls Idaho USA

Re: STD3 needs 5 minutes to select

by ken g » Thu Oct 16, 2014 2:32 am

Well maybe another description of this . The machine is in a regular heated room and turned off . If you just turn it on and dont touch it and come back in 5 minutes it works fine .

As for the ''boxes'' again , when i open them the solder on some of the connector pins have rings in the solder and some of them are loose in the solder . This is typical of all circuit boards with the same connector pins in a jukebox .
I have cleared up a number of strange symptoms in this age of jukebox by pulling every board and resoldering the pins . I am suprized you have never had this type of problem .


Ron Rich
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Re: STD3 needs 5 minutes to select

by Ron Rich » Thu Oct 16, 2014 4:48 am

Ken,
I really don't have any more ideas on the STD --try "freeze mist" on it ??
Yes--I have seen cold solder ( or "dry solder") joints on equipment before, but Seeburg's wave solder machine used for the DTP/DRD's was excellent. I fixed two DTP's and one DRD in the last two days and looked at every solder joint--all were still perfect-?? Ron Rich


Topic author
ken g
Regular Member
Posts: 98
Joined: Wed Nov 07, 2012 2:56 am
Location: Twin Falls Idaho USA

Re: STD3 needs 5 minutes to select

by ken g » Fri Oct 17, 2014 2:19 am

Thanks for the help anyways . I suspect its a resistor or transistor in the select/power supply box somewhere drifting .


Ron Rich
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Re: STD3 needs 5 minutes to select

by Ron Rich » Fri Oct 17, 2014 4:06 am

Ken,
I just had a brain poof--which power supply board is installed in that phonograph ?
Ron Rich

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