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Author Topic: Noris 342 Stereo Projector
Michael Wright
Expert Film Handler

Posts: 184
From: Chorley, Lancashire, England
Registered: Dec 2008


 - posted June 30, 2010 04:25 PM      Profile for Michael Wright   Email Michael Wright   Send New Private Message       Edit/Delete Post 
Hi all, just bought one of these beauties. It worked well for about 10 minutes and then the sound went and hasn't come back. The sound crackled and then died, unfortunately electonics are not my strong point, so can anyone suggest what to try first or who could possibly help? Thanks MIKE

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Thomas Dafnides
Expert Film Handler

Posts: 247
From: St. Louis, Missouri USA
Registered: Dec 2009


 - posted June 30, 2010 09:56 PM      Profile for Thomas Dafnides     Send New Private Message       Edit/Delete Post 
I would first remove the back cover and check if there are any fuses blown.

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Michael Wright
Expert Film Handler

Posts: 184
From: Chorley, Lancashire, England
Registered: Dec 2008


 - posted July 01, 2010 11:25 AM      Profile for Michael Wright   Email Michael Wright   Send New Private Message       Edit/Delete Post 
Thanks Thomas, I've tried the fuse it's ok. The machine is running fine as a silent projector - just no sound! MIKE

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David Roberts
Master Film Handler

Posts: 405
From: Suffolk. England
Registered: Apr 2004


 - posted July 05, 2010 02:00 PM      Profile for David Roberts     Send New Private Message       Edit/Delete Post 
try john white ,he sorted out my 342 recently.ive lost his contact details,but someone here will have them.

david.

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peter booth
Master Film Handler

Posts: 258
From: scarborough,north yorkshire
Registered: Jul 2004


 - posted July 05, 2010 02:10 PM      Profile for peter booth   Email peter booth       Edit/Delete Post 
Hello Michael,
John Whites contact details are.
johnatwhitejohn7dotorangehomedotcodotuk
hope you can undersand the email ad.
Tel 020 8204 8434.
regards,
Peter.

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Josef Grassmann
Expert Film Handler

Posts: 190
From: Hennef-Sieg, Germany
Registered: Apr 2005


 - posted July 08, 2010 07:54 AM      Profile for Josef Grassmann   Author's Homepage   Email Josef Grassmann   Send New Private Message       Edit/Delete Post 
Hello Michael,
Noris 342 is a very nice and very quit running projector. Beside amplifier the motor control-circuit often breaks down.
Keep projector in well geased and oiled condition - of course not too much - as motor is quite strong it will hold constant speed until Motor circuit breaks down due to high current consumption. You can`t notice it during running /projection.
This happens to NORIS 342 -when not used for several years- after running 10 min to 60min in most cases.
Check that voltage selector is turned to 240V~. Do not turn selector wheel whilst connected to mains! That might destroy transformer!

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Michael Wright
Expert Film Handler

Posts: 184
From: Chorley, Lancashire, England
Registered: Dec 2008


 - posted July 13, 2010 02:07 AM      Profile for Michael Wright   Email Michael Wright   Send New Private Message       Edit/Delete Post 
Thanks Josef, I'll check the lubrcation, are there any particular points that need grease? I've checked all the internal fuses I can find (3) and they are OK. So I think there must be a component in the amplifier thats failed. MIKE

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Josef Grassmann
Expert Film Handler

Posts: 190
From: Hennef-Sieg, Germany
Registered: Apr 2005


 - posted July 13, 2010 04:48 PM      Profile for Josef Grassmann   Author's Homepage   Email Josef Grassmann   Send New Private Message       Edit/Delete Post 
Place 2 drops of a thin oil (sewing machine oil) at each bearing of shutter shaft. Very carefully at bearing close to drive pulley, so that no oil spills will contaminate rubber belt.
Motor bearings sometimes get blocked. Rear bearing is difficult to oil due to generator connected to motor axle.

Itīs difficult to give good advice on amp failure as many different failure are noticed.

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