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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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11th Sep 2021, 7:04 am | #1 |
Diode
Join Date: Sep 2021
Location: Colchester, Essex, UK.
Posts: 3
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Tandberg model 62/64
Hi All, I've been playing with an old Tandber reel to reel model 62 and realised the motor is running constantly. I've checked both micro switches one for the tape and one for the control lever and both read ok on test meter. I've traced the cable to the rear of the fuse holder and tested here. Not sure if wired correctly any help would be appreciated thanks ..Mel
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11th Sep 2021, 9:10 am | #2 | |
Dekatron
Join Date: Jul 2008
Location: Kington, Herefordshire, UK.
Posts: 3,675
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Re: Tandberg model 62/64
Quote:
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11th Sep 2021, 10:45 am | #3 |
Dekatron
Join Date: Apr 2019
Location: Worthing, West Sussex, UK.
Posts: 6,604
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Re: Tandberg model 62/64
From Teds input I can see on the schematic that there is capacitor C13 (0.1uF/400V paper) in series with resistor R17 (51 Ohms 0.5Watt) across the motor switch & the automatic stop microswitch to act as suppressor (the components together are called a CR snubber in this case). Sometimes the CR components of the snubber are encapsulated in a single package, in this case it sounds like they are 2 discrete components
So quite possible that the capacitor has shorted and maybe also taken out the resistor. David Last edited by DMcMahon; 11th Sep 2021 at 10:53 am. |
11th Sep 2021, 1:05 pm | #4 |
Diode
Join Date: Sep 2021
Location: Colchester, Essex, UK.
Posts: 3
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Re: Tandberg model 62/64
Thanks Ted and David I will check and update.
Great site and very quick response |
13th Sep 2021, 3:40 pm | #5 |
Dekatron
Join Date: Aug 2006
Location: Madrid, Spain / Wirral, UK
Posts: 7,498
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Re: Tandberg model 62/64
In some tandbergs, this cap is located on the tag strip on the transformer where the motor switch/wires go, and not on the switch itself.
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Regards, Ben. |
14th Sep 2021, 11:40 pm | #6 |
Octode
Join Date: Mar 2006
Location: Lund, Sweden
Posts: 1,632
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Re: Tandberg model 62/64
It's quite common for the snubber cap on these machines (and all Tandbergs of similar vintage) to fail short circuit. Not quite as bad as the Rifa caps which populate the rest of the machine, but not far off. Unlike a failing X2 cap, there are no fireworks associated with the failure, since the cap is mounted across a switch and not across a voltage source.
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15th Sep 2021, 9:56 am | #7 |
Diode
Join Date: Sep 2021
Location: Colchester, Essex, UK.
Posts: 3
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Re: Tandberg model 62/64
Hi guys. Replaced the cap and resistor this morning and they presto works as it should. Thank you so much for your help.
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