[Jukebox-list] Wurly 3300 ?

[Wesley Dean]

    Ron,an obvious clue is in what state does the fuse blow? Idle? Playing a 
tune? Lifting a record? Replacing a record? Making a selection? I hope this 
does not insult your intelligence. Wes
----- Original Message ----- 
From: "Ron Rich" <ronnnrich at yahoo.com>
To: "Jukebox mailing list" <jukebox-list at lists.netlojix.com>
Sent: Friday, July 06, 2007 3:28 PM
Subject: Re: [Jukebox-list] Wurly 3300 ?


John,
  Thanks for the tip--however this is an AC circuit--no brushes--and it only 
blows the fuse every month, or so-- ( I suspect something, but was hoping 
someone would confirm it).
  Ron Rich

John Robertson <pinball at telus.net> wrote:
  At 9:26 AM -0700 7/6/07, Ron Rich wrote:
>Hi All,
> Anyone have any idea why a 3300 Wurlitzer would -intermittantly-
>blow the 8a. AC fuse? Does it anywhere between from 100-500
>plays--TIA, Ron Rich
>
>

Hi Ron,

What I do in cases like this - where the item that takes out a fuse
is not obvious - is I break the line after the fuse at the various
devices powered by that fuse. Then I fuse each of them independently
with a slightly lower value - say 5A on the 8A line, and the one that
pops shows the likely suspects' area.

Aligator jaw jumper wires and a handful of fuses will usually resolve
this in an hour or so...

Oh, and if there is a DC brush style motor on the circuit that
intermittently blows a fuse, check the commutator for carbon shorts
between the elements.
Link to nice picture of armature with the commutator as the closest part.
http://www.microchip.com/stellent/groups/designcenter_sg/documents/market_communication/~export/en026724~5~en006096~BasicLayout/48808-2.png

John :-#)#
-- 
John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9
Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, VideoGames)
www.flippers.com
"Old pinballers never die, they just flip out"
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