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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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28th Oct 2011, 7:09 pm | #1 |
Pentode
Join Date: Sep 2011
Location: Skegness, Lincolnshire, UK.
Posts: 103
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No Record. Beocord 2000 delux
Hi all can anybody tell me if there is anything else to check before I condem the record head.
Nice signal going into the machine. 0.3 volts ac recording bias on the head. Plenty of audio reaching the head. Erasing ok. What else accept the head. Seems strange to me that it will not put anything on the tape at all. Thanks for any help in advance. |
28th Oct 2011, 7:25 pm | #2 |
Dekatron
Join Date: May 2008
Location: Derby, UK.
Posts: 7,735
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Re: No Record. Beocord 2000 delux
Is this a 2- or 3-head deck?
If 2-head, and the record/play head is faulty, then there will be no playback. If 3-head, you could try temporarily connecting the play amplifier to the record head and seeing if you can get a signal from a tape. (It may be weak or distorted, due to impedance mismatch; on most 3-head decks, the record and play heads are not identical. But you should hear something at least, if the head is OK.) If you test the head for continuity, only use a digital meter - analogue ones use enough current to leave the head partially magnetised, and this will gradually ruin your tapes (they will get quieter with successive listens; guess how I discovered this).
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If I have seen further than others, it is because I was standing on a pile of failed experiments. |
28th Oct 2011, 7:37 pm | #3 |
Pentode
Join Date: Sep 2011
Location: Skegness, Lincolnshire, UK.
Posts: 103
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Re: No Record. Beocord 2000 delux
Thanks AJS.
Its a 3 head stereo deck. The playback head reads 30 odd ohms on a digital meter. the record head just over 1 ohm. Nerver had a head pack up completly like this. Very unusual. Regards Dave |
28th Oct 2011, 8:29 pm | #4 |
Retired Dormant Member
Join Date: Aug 2004
Location: Blackpool, Lancashire, UK.
Posts: 1,488
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Re: No Record. Beocord 2000 delux
Is the playback switch in the correct position?
Colin. |
28th Oct 2011, 8:35 pm | #5 |
Pentode
Join Date: Sep 2011
Location: Skegness, Lincolnshire, UK.
Posts: 103
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Re: No Record. Beocord 2000 delux
Yes All the switches are OK.
Have just disconnected the record head completly. Found the cause - both windings o/c. Thanks for all your help. Dave |
29th Oct 2011, 6:16 am | #6 |
Octode
Join Date: Mar 2006
Location: Lund, Sweden
Posts: 1,632
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Re: No Record. Beocord 2000 delux
Beocords use Bogen heads, and it's not uncommon for them to go o/c. I've seen it occur more frequently with high-impedence heads used in valve recorders. I was hoping it wouldn't happen with the low-impedence heads used in transistorized machines, but it seems I was wrong.
I'm wondering if some fault in the recording circuitry could cause excessive current to pass through the heads thereby burning out the windings? Regarding magnetizing the heads by passing DC through them: a good demagnetization with a defluxer will cure that. One thing I noticed with the 2000 DL is that playback head is actually floating at a couple of volts above (or possibly below) ground, so if you accidetally short-circuit one of the connections to the playback head to ground, you can end up with a magnetized head. It happened to me and was actually the first time I experienced the results of playing back a tape with a magnetized head - it leaves a very characteristic low-level rumbling noise on the tape due to the DC magnetization. |
29th Oct 2011, 1:35 pm | #7 |
Pentode
Join Date: Sep 2011
Location: Skegness, Lincolnshire, UK.
Posts: 103
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Re: No Record. Beocord 2000 delux
Thanks for your input ricard.
Yes I had the same thoughts as to what caused both windings on the head to go o/c. Having spent hours looking at the circuit I cannot find anything that would cause this. There is a good AC bias voltage on them and they are fed from 2 seperate record aamplifiers. My only other thoughts are that there is a fare amount of rust on the external metalwork of this recorder so I wonder if its been stored in damp conditions. Thanks for your help. PS. Anybody know of a sauce for a new Bogen record head for this machine? Dave |
29th Oct 2011, 3:50 pm | #8 |
Dekatron
Join Date: Apr 2005
Location: North Wales, UK.
Posts: 6,925
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Re: No Record. Beocord 2000 delux
Hi
This is sadly a very common fault on this machine - I have had it happen myself. I don't think any other head will do, I'm afraid. I think it's due to corrosion in the head itself, but I'm not sure. Did I see someone with a machine for sale in the 'offered' section? I have a couple of machines that are in quite a bad way - if you're stuck I can investigate and see if I have a good head, but I wouldn't be too hopeful. Glyn |
29th Oct 2011, 4:05 pm | #9 |
Pentode
Join Date: Sep 2011
Location: Skegness, Lincolnshire, UK.
Posts: 103
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Re: No Record. Beocord 2000 delux
Hi Glyn
Would be appreciated if you could have a look for me. Don't hold out much hope of getting one from anyware else. Regards Dave |
29th Oct 2011, 4:56 pm | #10 |
Tetrode
Join Date: Nov 2008
Location: Leeds Yorkshire
Posts: 73
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Re: No Record. Beocord 2000 delux
Hi Eric,
I have a Beocord 2000 Deluxe which I am selling for spares or repair. It comes with built in amplifier and speakers built into lids. Also has a perspex cover in excellent condition and two microphones.Am asking £25, if interested give me a shout. |
29th Oct 2011, 5:02 pm | #11 |
Pentode
Join Date: Sep 2011
Location: Skegness, Lincolnshire, UK.
Posts: 103
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Re: No Record. Beocord 2000 delux
Hi Smartalec
Yes would like to buy it off you. Not to far away in Skegness. Dave |
29th Oct 2011, 5:21 pm | #12 |
Nonode
Join Date: Jun 2005
Location: Western Lake District, Cumbria (CA20) - UK
Posts: 2,136
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Re: No Record. Beocord 2000 delux
As Eric is now getting another machine we'll close this thread.
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Brian |