[Jukebox-list] FW: Seeburg STD4 double scan & no selection

[Dieterle, Jeff R.]

 Ron, 
	I realized after studying the print & your book more that my
symptoms were a write-in issue and the pulse detector is part of the
read-out circuit. Well, anyway my original post was incorrect, the
battery test renders no selections. I probably tried this after the
bleedy cap charged. I tried the battery test today as soon as I powered
the juke and I get no selections. So now that I'm back on track, the
detent relay energizes when grounding the Trip test point, so I'm back
to suspecting C3104.  I did the read source voltage check getting around
80vdc, with maybe a 2 volt fluctuation. Is this something I need to dig
into also as you manual states 55-60vdc as being normal?
	Another problem although not a major one is the 100's lamp in
the Digital Selection Display doesn't illuminate. From the cable diagram
the source appears to come thru J3501 which goes to the mechanism??? but
I can't find the rest of this circuit to t-shoot no voltage at the lamp
socket when the A side of a record is played. 
Thanks
Jeff Dieterle

-----Original Message-----
From: Ron Rich [mailto:ronnnrich at yahoo.com] 
Sent: Thursday, October 12, 2006 10:53 PM
To: Jukebox mailing list
Subject: Re: [Jukebox-list] FW: Seeburg STD4 double scan & no selection

Not if it will detent using the battery--check out page 23, #1--Ron Rich

"Dieterle, Jeff R." <Jeff.Dieterle at alcoa.com> wrote:  After going
through the circuit in the manual and following Ron's
description in the Sequence of Operations I'm wondering if cap 3104 in
the pulse detector circuit could be the culprit. If its not charging
rapidly & leaky wouldn't it impose a high resistance and keep the SCS
from allowing the trip coil to connect ground ? Pardon my ignorance if
I got this circuit operation all mucked up. 

> ______________________________________________ 
> From: Dieterle, Jeff R. 
> Sent: Thursday, October 12, 2006 4:57 PM
> To: jukebox-list at lists.netlojix.com
> Subject: Seeburg STD4 double scan & no selection
> 
> Classic symptom except if I allow the box to rest powered up for 15
> minutes or so everything is normal which suggests to me a leaky cap. I
> only had time today before going to work to try the battery test and
> the mechanism detented at every space in both directions. So it looks
> like a write-in problem. On page 36 of the Service Manual I see a
> write-in cap on the gray box schematic. Is this one an electrolytic
> and if so replaceable or is opening the gray box a bad plan? So far
> Ron Rich's Microlog t-shooting guide hasn't failed me yet so I'll step
> through the write-in procedure when I get a chance. 
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