ARCHIVED FORUM -- March 2012 to February 2022READ ONLY FORUM
This is the second Archived Forum which was active between 1st March 2012 and 23rd February 2022
I recently purchased a Beocenter 7002. The problem is that when i press the "Phono" button, the record starts to spin, and the tone arm raises, moves over the record, and goes down. So far so good.But after about 2 seconds, the arm raises itself again, goes back to its starting position, and the record stops spinning.Does anybody have any ideas?
This happens most times I move my BC7002 It always malfunctions first time I switch on or press Phono. I unplug set and GENTELY move the arm across towards the centre of TT while turning the Turn Table Clockwise by hand and the Mechanism should take over keep turning and until the arm is returned to the Rest position. That should make it work when you plug it in again. Needles to say don't force anything. I Always put an LP on TT before plugging in to mains, yesterday after moving mine I forgot and it started playing without a record! I managed to catch cart before it hit the bare TT.
John.
Thank you very much By unplugging set, you mean i should pull out the power chord?How is it possible then for the mechanism to "take over" while i gently move the arm and turn the turntable?I will without a doubt try it one of the next few days.Do you know if it is an easy task to remove the aluminium on the device to remove dust and old grease from the machinery and electronics?The guy i purchased it from moved it without securing the arm, so the pickup was broken while i got it. I borrowed a cheaper model from another turntable, and it seems to fit ok.Karst1
Correct, pull the power chord out of wall. Turning the platter all the time you are moving the Arm. The mechanism is all mechanical, try this first. Others may say different but in my opinion there is a minimum of grease to go hard like there is on the cheaper players made at the same time and I doubt this is the trouble. You say you have replaced the Arm it will require setting up but I doubt if the end of record detector will be that far out, most lightly incorrect assembly. Arm was from a BC7002 ? My Bc7000 has a slightly different deck and I thought they were meant to be the same.
I only replaced the MMC20EN, (which was broken) with a MMC20S.But i'm waiting for another 20EN to arrive.Looking forward to try your idea, as soon as the working week is done Thanks
Hi Karst, I misunderstood you replacement part, All should work without any adjustment, not unless you have bought a player with a previous fault. I presume the radio plays ok?
John
According to the seller, everything works, except the record player (Unfortunately he broke the MMC20EN) during transportI got The BS 7002, a pair of Beovox S80 (who looks to be in good shape) and a System Cabinet SC20, all for ca 45 Gbp.I haven't had time to try anything but the record player yet. But next week i'm off work.Karsten
Hi Karsten, Watch out behind you, you will be having the Police after you! You just robbed the guy! You can expect to pay best part of £200 for SC70 alone. And a further £250 for a new MMC20EN. What Town are you near! I have two similar set ups. Do the S80 Base speakers need refoaming? I would advise you to get the service manual and change two or three pre-set resistors and set them as manual says, these pre-sets will be ready to fail its a well known fault and will help with the reliability of your set in the future.
One final warning, Please don't turn the volume up to 10 the people across the street won't like it unless you play their type of music! let alone the neighbours !
I just realised you have a SC20 not the SC70, maybe not quite so valuable but still nice.
I would have loved to have the SC70, but i'm happy with the SC20.The whole system belonged to the sellers father in law. They wanted to keep it, but because of the problems with the tonearm they got rid of it.The speakers look good, and the seller said they sounded good. But of course, i guess they haven't been played properly in some years. So maybe i need to refoam later.I got the remote, an old warranty and the service manual together with the rest, so i'm looking forward to test it properly.Thanks for your replies. I will keep you updated how things develops.I live in Norway btw. In Bergen Karsten
HI Karsten, Hmm Bergen, a bit far to pop over. Just a thought is record player fault with lid open or closed?. I had similar fault, counter weight catching the lid. The lid had got pressed down at the back corner It is in slots for fine adjustment. You can try the simple things before opening the set up.
It was open when i tested it.Will try everything next week.Checked out the speakers more thoroughly. They need refoaming.The foam were getting "crumbly"? Ordered some foam from speakerrepairshop.com.Hope i'll manage to fix it Karsten
I think it may have been the BC700 that catches the lid after playing a few seconds, the counter weight is much bigger. Good luck with the speaker refoaming. I would expect the tape deck belts to be melted, unless previous owner had new ones fitted. In my experience the TT belts are ok on my three sets. If you do need belts, Forum member "Dillen Martin can supply them.
I'm sorry to say that your first tip did not work. I unplugged the chord. Moved the arm gently over the record, while spinning it clockwise.Nothing happened. The mechanism did not take over, the arm did not move.And the next time i started the tt, the same thing as before happened. The needle went down to the record, and after ca 1 sec, the exclamation mark on the control power lit up, and the arm went up and back to its starting position Not sure what to do.
Sorry tip did not work, You did not say the exclamation mark lit before needle lifted, this means the deck is getting an electronic command. When arm arrives back at "Rest" position can you hear the relay click off and the "PH" in the display disappearing ? One simple thing, cover the IR sensor (next to the Phone socket) My set can get wrong commands from my energy saving light bulbs when they have just been switched on. Have you tried the radio? If that stops working after a minute or two. I would suspect wrong Idle current. If radio works ok I would suspect capacitors, get back with your findings.
Not sure what the relay is ;) But when the exclamation mark lit, the "PH" in the display disappears. and the arm goes back to the resting position.and just before the record stops spinning and the exclamation mark disappears, there is a little click.Tried the radio with speakers for the first time. And guess what....the exact same thing happens.Radio goes on, sound is good, and after ca 2 secs, the ecxlamation mark lights up, and the sound + the P1, or P2 etc in the display disappears. (and there's a little click).Nothing happens when i cover the IR sensor. Exited to hear your theory =)Karsten
I believe your beocenter is going it to "Standby" controlled by the protection circuit. Most common fault Wrong Idle current, caused by pre-sets on left and right channels. If you are up to replacing these and setting them as per service sheet please upgrade to Silver membership where the service manuals become available at no extra cost. The Pre-sets are the weak part of the set at least the protection circuit should have prevented damage to the output ICs. Bad capacitors would be another possible fault. I am sure Forum member Martin "Dillen" may have other possible causes and be able to offer further advice. But until the pre-sets are replaced and set please do not switch the set on again.
Good luck with it John.
I also change the pre-set for 6.5V supply, along with last nights post above this is the minimum of work required to get set working. I would also advise you not to try the Tape, the belts will be melted and it will just spread the Goo, if it is bad enough the goo will have come through the ventilation holes under the tape deck and can be seen before opening the set up.
I do hope you are able to do the work or find some one to do the work for you, these are a lovely user friendly sets with a really smooth tone arm operation, and one of the first to use IR remote control.
Lucky You !
I hope you have not given up on this lovely set, It is a fairly easy fix if you know someone interested in electronics. £2 worth of parts a few screws to remove. A meter is needed to set up the new parts correctly.
Hi again.Sory for the late reply, but the BC almost broke my back!I lifted it down from a closet, and havent been able to walk properly for a week. Those things are heavy.To be honest, i'm not sure what to do with it. I haven't given up, but i am completely useless with electronics, and i'm not sure if i know anyone that can do the job.But i would like to try.I guess i need to register as a paying member to get the service manuals. But i also need tips on what parts to buy, and where to get them.The first thing i'm going to do anyway, is to try and refoam the speakers =)Karsten
Hi Karsten, sorry about you back. If you really are useless with electronic probably better not attempt repair, it would be so easy to wreck the set in unskilled hands. A bit like someone never driven a car trying to drive first in a Mclaren F1, its going to end in tears. You could get a cheap old transistor set and practice your soldering and desoldering skills. When you feel confident you will need two horizontal 250R miniature Piher pre-set resistors and another horizontal miniature pre-set I can not remember the value, these would need to be set accurately with a meter. The tape player will need a set of belts. My sets would benefit from a set of capacitors but yours should work without at first.
Hi john.
I'm letting one of my neighbours take a look at it, he's an electrician. So hopefully he'll be able to fix it.
i have removed all the old foam from the speakers, and hope to have a functioning set of Beovoxes tomorrow.
Karsten