8mm Forum: Noris stereo 342 problem

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Topic: Noris stereo 342 problem

Jason Moffatt
Expert Film Handler

Posts: 104
From: Denham, Buckinghamshire, UK
Registered: Aug 2014

posted March 07, 2018 03:47 PM

The sound went on this today and checked what i believe is the amp fuse and it had blown.So i replaced it and switched it on and heard a pop from the speaker and the fuse instantly blew again, tried it one more time and the same thing happened.Does anybody have any idea what the problem could be.

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Paul Browning
Phenomenal Film Handler

Posts: 1006
From: West Midlands United Kingdom
Registered: Aug 2011

posted March 07, 2018 03:54 PM

Hi Jason, probably a transistor shorted to ground, not sure where they are on this machine. I had a similar problem on mine, but not the transistor, its was a cap shorted that kept blowing the fuse.

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Stuart Reid
Jedi Master Film Handler

Posts: 720
From: Worthing, West Sussex, UK
Registered: Feb 2009

posted March 07, 2018 03:55 PM

If it's popping fuses constantly the fault could be anywhere on the board. I'd start by checking the capacitors to see if any of them are bulging as they may need replacing. Also look for dry solder joints on the tracks.

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Jason Moffatt
Expert Film Handler

Posts: 104
From: Denham, Buckinghamshire, UK
Registered: Aug 2014

posted March 07, 2018 04:10 PM

Paul & stewart, thanks for the reply's, i may have to get rid of it then as changing a fuse is about as far as my electronics knowledge goes.Shame as other than the sound problem it works fine.

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Simon McConway
Phenomenal Film Handler

Posts: 1085
From: Doncaster, UK
Registered: Jun 2004

posted March 07, 2018 04:12 PM

Google John White 8mm shed shop: he repaired mine.

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