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
Hallo,
I' m new here in posting but not in reading. With the help of the fantastic thread from Sören Mexico I went on
giving a cd 50 I bought "not working" a service. Only mechanically, I'm not experienced in repairing electronics. I changed the belt, cleaned and lubricated all things and put them together in the right way (hope so).
But unfortunately something is wrong : the cd is loaded, but the procedure stops when the lift has to go down a little bit. When I turn the gear with my finger so that the lift goes down the cd starts and the player works quite normal.
Has anyone an idea what helps to that missing step? I can't find it out.
Looking forward to some helpfull hints.
Bernd
Sounds like the mechanism is out of sync. Are you sure you put all the gears back in the correct places? As I understand it you have to ensure the gears are meshing in exactly the right places.
Lee
Welcome!
Check the height of the brass nut over the big wheel. I had the same problem exactly a few years ago and it took me some time to figure out what was wrong. It seems that this is not an issue on all versions of this Aiwa mech.
Also, it could be that the belt, not being tight enough, doesn't have enough torque to finish the sequence.
I even found that it wasn't necessary at all to mark the gears for correct placement after all.
Jacques
chartz: I even found that it wasn't necessary at all to mark the gears for correct placement after all.
Correct, but it does make things much easier for non-tech people at the kitchen table guided only by forum posts and emails.
Martin
Thank you for your replies.
I tinkered a bit with that brass knob. But without any result. Nevertheless I found it a little bit hard going when I pushed the gear with my finger.
And then : I saw that little gap where you can see the belt. And it was slowly creeping forwards when the gear stopped. Perhaps that is it.
Shall I use another belt? I bought this one at an ebay-seller last winter already (I do these things only during wintertime ) and thouht that it is very thin.
The belts for B&O you will find on the Internet are usually pretty useless.
Ask Martin, aka Dillen!
Get a belt from Martin, and adjust the brass nut so the gear has about 0.1 mm radial play. Finger tighten the nut until it sits block with the gear, then loosen the nut about 1/3 turn, check that the gear is moving freely. In the weekend I will open a CD50 I got from Rich.
Collecting Vintage B&O is not a hobby, its a lifestyle.
OK , I think you are right, chartz. I try to order a better one from Martin. Contact over this forum or how does it work?
Regards
Contact Martin
Thank you Sören, just done.
Hello again,
in the meantime I got a new belt from Martin and all worked as it should. With a little exception. When a CD is very long the last two or three tracks do not come. But I think I have already seen the reason: the CD wobbles and I think at the end its too much movement for the laser to read. So I think I have to controll the CD-motor.
By the way, I just had the chance to buy a complete new kit CD 50 Terminal with original box, manual , installation description and electronic. Rather rare item now I think.
No pictures: it did not happen!
You want a picture of that kit, right? I would post it but don't know how to do. I couldn't find any advice. Not so familiar with pc-management!
Disc wobbling can cause focus problems, that's true, but we must keep in mind that at the time ofBeogram CD 50 production, CDs were limited to a playing time of apprx. 74min (Redbook format).The 78 and 80min CDs came later.Most Beogram CD 50 versions will happily play it all, but I would never expect all to do it.If your Cds run past 74mins this could be the reason.
Check the block number. It's on the internal label, sitting at the right side of the verticaldivider metal plate between the sandwiched circuit boards at the center and the rightmost circuit board.It's a stamped or hand-written number/letter in the hex range (1 to F).The number will not tell us how many and which (if any) post-production revisions were made but itwill tell the basic version.
Philips machines of this era will read wobbly CDs very well (and you can see the swing arm work hard, wobbling about very quickly!), but these Aiwa machines will have more difficulty to read badly centered ones, yes. My CDP-101 reads everything though.
Thank you for answering, interesting infos. I am going to check it.
Very interesting information about that cd history. I checked the cd I had problems with and found out its playing time is 80 min. That's quite that what Martin told us! Two times the player stopped in the last track, but I could restart it and it played to the end then. Seemed to me like the mechanic had to get used to play that long way. Of course I did some slight regulations to the cd platter. Now the cd runs more straight.
I checked that inner label, and it says : B 8 (not sure the stamped figure is not clear) 51211213. Does this number tell us something?