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Vintage Tape (Audio), Cassette, Wire and Magnetic Disc Recorders and Players Open-reel tape recorders, cassette recorders, 8-track players etc.

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Old 23rd Jun 2022, 9:45 am   #1
phil_fw
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Default Tandberg series 15.

My series 15 performs OK but recently developed a glitch whereby the motor won't turn when selecting play. It is an intermittent problem which suggests it may be bad contacts. I opened the box and can see the function selector switch mechanism but I am wondering where the actual electrical switch is located. Would appreciate guidance before I dismantle more than I need to. Thanks
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Old 23rd Jun 2022, 12:34 pm   #2
ben
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Default Re: Tandberg series 15.

The motor switch is located in the area under the pinch roller. Check/clean the aluminium tape end feeler arm and linkages, which also activate this switch - these get gummed up. Clean those first before trying to dismantle anything. This is a very delicate mech.
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Old 23rd Jun 2022, 5:00 pm   #3
phil_fw
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Default Re: Tandberg series 15.

many thanks
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Old 6th Jul 2022, 10:33 am   #4
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Default Tandberg series 15.

Hi all

I was adjusting my Tandberg - issues with spool torque.. and afterwards there was this "thing" on the table. Perhaps someone could identify it?

It has 18 80 stamped on the surface.

Looks important.

Thanks
Phil
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Old 6th Jul 2022, 10:37 am   #5
phil_fw
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Default Tandberg series 15.

Hi all

My Tandberg is working well mechanically and plays OK - but - after about 30 minutes the audio quality starts to diminish and distort with the audio level going down as well.
It isn't the heads... I think this feels like a heating problem somewhere in the electronics. If I turn it off for a while the audio is fine again.
Does anybody have a suggestion as to where to look for the problem.

Thanks
Phil
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Old 6th Jul 2022, 10:47 am   #6
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Default Re: Tandberg series 15.

Check the conditions of the amp module and the thermistor. Will look at my notes later and try to be a bit more specific!
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Old 6th Jul 2022, 11:54 am   #7
phil_fw
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Default Re: Tandberg series 15.

It is made of Delrin and has those sloping surfaces that look like they are associated with operating clutch or brake mechanisms
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Old 7th Jul 2022, 6:16 pm   #8
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Default Re: Tandberg series 15.

Nothing obvious similar seen in the service manual, unfortunately the manual does not have exploded views (s) showing all parts.

David
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