[Jukebox-list] Wurlitzer 1050 sound

[John Robertson]

At 12:48 PM -0700 7/6/07, Ron Rich wrote:
>Julie,
>   The amp must be repaired--Also, before you re-connect this back 
>up--check for shorts in the VC wiring--Ron Rich
>
>Julie Mitchell <julie.mitchell at gmail.com> wrote:
>   Ron and John,
>
>Sorry for the long delay, as I was away for the holiday.
>
>I bought a single 4A, 250V ceramic fuse, which was the same value as
>the one in the amplifier. I disconnected the remote wiring (from
>inside the box, not at the switch, obviously). I then swapped out
>each of the 4ASB fuses in turn and checked to see if the sound was
>restored. Unfortunately, this did not address the problem. I also
>tried replacing the 1.25A fuses inside the amplifier, which also did
>not address the problem.
>
>Now, finally I 5A regular fuse into one of the 4ASB slots (yes, I
>know...) It blew out immediately, but since it's a different type of
>fuse, I'm not sure how to interpret this.
>
>Any suggestions? Should I pull the amp out and send it off for
>repair, get my repair guy out from Chicago, or is there something else
>I should check first?
>
>Thanks again,
>
>Julie


A couple of simply tests before spending money on tech help - FIrst, 
put a record on play then turn the volume up while listening to the 
speakers. Do you hear ANY noise at all from them? Perhaps a 
scratching sound as the volume is raised?

If no sound unplug the relay in the middle face of the amplifier (do 
this while a record is playing) after turning the volume back down. 
Anything now when you turn the volume back up? If so then the MUTE 
circuit has problems.

If scratchy, or other noise is heard from the speakers, then try 
unplugging the INPUTs (RCA jacks) on the amplifier with the volume 
about 1/2 and a record playing. Hear a noise (loud hum, pop, etc.)? 
If yes, then troubleshoot the wiring to the tone arm.

OK, so you've gotten to this point with no noise from the speakers 
with nothing done about...Well, you have some sort of a problem that 
likely needs technical assistance. First of all you did not need to 
get a ceramic fuse - any glass fuse (3AG style) - of the correct type 
and current would be fine there. Ceramic fuses are simply stronger 
and only really needed in abusive environments (strong shocks - heavy 
metal music ;-)).

Your amp should be checked that it was upgraded to the latest version 
while in the shop - details on my web site:
  http://flippers.com/37-3800w.html

John :-#)#
PS, we service these amps obviously...as do others!

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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>On 6/29/07, Ron Rich wrote:
>>  Julie,
>>  If you replaced the 4ASB fuses with a "ceramic" one--what was the 
>>value of the new fuse?
>>  Did it work since you replaced the fuse? Ron Rich
>>
>>  Julie Mitchell wrote:
>>  Hi Ron,
>>
>>  That seems plausible. I did replace the 4A fuses one at a time with a
>>  new ceramic one, though, and it didn't help. Could they have blown
>>  out simultaneously, or is there something else I should check?
>>
>>  Thanks again for all your wonderful help. They should call you the
>>  "jukebox whisperer" :)
>>
>>  -Julie
>>
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>>  On 6/29/07, Ron Rich wrote:
>>  > Check the wire going to the remote--look for pinched wires, 
>>especially wher the jukebox wheels may have run over it, and/or 
>>staples thru it. I suspect that you have lost the DC voltage, due 
>>to one of the two, 4 amp slow blow fuses, being open in the 
>>amp--find the short FIRST, before replacing those fuses with the 
>>corect size--Ron Rich
>>  >
>>  > Julie Mitchell wrote: Yes, it does. It did not seem sticky at 
>>all, and it turned without forcing it.
>>  >
>>  >
>>  >
>>  > On 6/29/07, Ron Rich wrote:
>>  > > Does it turn?
>>  > >
>>  > > Julie Mitchell wrote: Yes, I did try that last night, and it 
>>did not help.
>>  > >
>>  > > Thanks,
>>  > >
>>  > > Julie
>>  > >
>  > > >
>>  > > On 6/29/07, Ron Rich wrote:
>>  > > > Julie,
>>  > > > Can you increase the volume by turning the manual control, 
>>located on the cabinet rear?
>>  > > > (Try it while a record is playing) Ron Rich
>>  > > >
>>  > > > Julie Mitchell wrote:
>>  > > > Hi Ron,
>>  > > >
>>  > > > It is a wired control switch, model 169.
>>  > > >
>>  > > > I should have said the "cancel switch" rather than override ... sorry
>>  > > > about that!
>>  > > >
>>  > > > Thanks,
>>  > > >
>>  > > > Julie
>>  > > >
>>  > > >
>>  > > >
>>  > > >
>>  > > > On 6/29/07, Ron Rich wrote:
>>  > > > > Julie,
>>  > > > > What type volume control do you have--wired, RF, or IR? 
>>What is the "override button" ?
>>  > > > > Ron Rich
>>  > > > >
>>  > > > > Julie Mitchell wrote:
>>  > > > > Hello to all, and thanks for your help in the past. Last night I
>>  > > > > turned on my Wurli 1050, and it had no sound. The service 
>>manual does
>>  > > > > not have any tips to troubleshoot, and everything else seems to be
>>  > > > > working properly. I checked the fuses and didn't see anything
>>  > > > > obviously wrong there. If it helps in diagnosing, one thing I did
>>  > > > > notice is that the remote volume control is no longer 
>>working (but the
>>  > > > > override button works just fine.)
>>  > > > >
>>  > > > > Any thoughts? Your advice is greatly appreciated!
>>  > > > >
>  > > > > > -Julie

-- 
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"