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
Hi guys,
After contemplating my (a little) mixed up Beosystem, time has come to adjust or fix it!
Let's start with the Beogram 3000: before I drawn it into contact cleaner I thought I may call from some advices .
To help people answer my (lot of) questions, I will use indexes: A, B, C… Hope it will make things clear!
Here are the symptoms:
A-Rumble: I know it's classic and i've read the topics on the idler wheel to replace but before investing more money into that, I would like to investigate the reasons and be sure any penny will help. I would like to be sure that « that » rumble will get out with a new idler wheel. Sample sound in following posts…
B-Off sound: when I interrupt the play by pressing the « LIFT » button, I get a « castagnette » sound, until iI sense the audio circuit cut outs and the silence comme back.
Where can it came from? Sample of the sound in following posts…
C-Distorted sound after a while: The sound is not « that » great, even if it’s very pleasant to listen to. But after some time, he becomes really distorted. To be fair, I dont know the condition of the pick-up (SP10) and I doubt it will be in great shape. But if they were no parasite noise he would make the record listenable until it start that saturation. From the readings i did around, I suspect a bad adjustment of counterweight/pressure. But I can’t really fiddle with them as I dont want to make things works trying to fix different symptoms at the same time. All I can say is I feel like the playhead is going closer to the recording as it plays close to the center. Is it normal?
I’ve checked the average speed of the plater and it seems right.
Side question if I may: is there an efficient way to clean the brushed aluminium table and platter? Mine is not dirty but reviving it would be great.
Thank you for your help and advices.
All the best.
Rumble with music…
Rumble alone…
Lift arm noise…
Hi,
Now the Beosound 3 is working well, i'm back to this task!
Investigating a little further, I've found that the distorted noise after some minutes comes from the playhead crushing on the record.I've spend a lot of time trying to balance the arm the best i can, following the user guide instructions and it looked like working well.But now, after a moment (often towards the end of the record but not only and not always at the same moment) it's like if the arm collapsed, pressing to much the stylus and causing distortion.
Is it a bad adjustment or could it be some sort of wearing somewhere? How can i ix this?In favor of a bad adjustment, when starting the record sometimes (but again nit always) the needle bounce on the take off track and end its course outside the platter. But as soon as I try to add a little pressure the head almost touch the record.
I've also read here and here that you guys often use the 1.2 gr recommended setting. In my case anything above 1 crush the needle, so I'm a little confuse.
Appart from this the different noises issues are still to be fixed and any help or advice is welcome.
Well digging a little further the rumble id 50hz so I assume its electronic.
To clarify, I've read lots of post about noise caused by the idler wheel but not understanding if we were talking about mechanical noise or electronic noise (in the speakers).
My 50hz noise is in the speakers. Any hints about what i should watch ?As for the stylus pressure, I've also read that for the SP10, the recommended pressure is 2grs, which dont help much with what's written above.Could a wrong arm balancing make all those setting completely off (I.E. looks like it work when it absolutely don't?)
Please, all advices welcome.
I keep updating that thread even if I see it don't have much success Maybe in the future it may help or interest somebody.
Today I tried to connect the Beogram 1203 which was previously meant to be part donor.After leveling as I could the sub-chassis and fitting back the counterweight and cartridge, I plugged it up the Beomaster.Surprise, it worked! It turned a bit slower but, even if I've not checked accurately, adjusting with the little side wheel made the record sound "normal".The best part is… "No rumble", no "castagnette" when the arm lift and apart from cracks, no weird sound.
I feel like the sub chassis is tired: I had to block one of the transport screw for it to stay at level. If not, the sub chase dig too deep and the platter touch the chassis. The springs holding the chassis are also very rusted and maybe too soft too.
I would have liked to fix the noises from the 3000 which is in better mechanical conditions, but I don't know where to start even after reading lots of posts.The 1203 Seems in better electrical condition but is mechanically in bad shape: lot of rust inside, the arm support is also rusted or attacked by some sort of mushroom (I've seen this on aluminium car wheels), and I dont believe the little metal shafts who are part of the mechanism to live long.
In the process I dumbly damage the stylus and crush the diamond arm into the head. Maybe it was already weak before explaining why the cartridge collapsed from time to time. Luckily enough I managed to find a temporary fix and I can still proceed trying to repair both turntables as much as I can before engaging more money.
By the way, about stylus, the name Axel come over and over about diamond restoration but I was unable to find any contact. Is he still in business? How can I contact him?
If anybody id passing by, thank you in advance
Hi Guys,
As you know yesterday I swapped my turntables. For that I had to change the wood part to keep the turntable white.In the process i saw a little wire going from the din shield to the chassis in the 1203 wha was not on the 3000.As both were guts open, I add the same wire to the 3000. Just notice afterward that the link already exists but on the other side of the Beogram… Anyway.
This morning I started the hunt to get rid of that 50hz hum. I started easy by testing continuity and checking the DIN connections in the socket.I take the opportunity ti clean the connector while he was open as it was the obvious that the outer part was a little dusty compared to the part protected by the housing.
Well, I plugged the deck back and since 20 min ago, no hum, no castagnetas, no noise, just a Beogram 3000 Spinning well.Which by the way, make me the lucky owner of two Beograms
I would like to thank everybody for the help but, it was quite a monologue all along, so…
Hope it could help someone someday…
matador43: By the way, about stylus, the name Axel come over and over about diamond restoration but I was unable to find any contact. Is he still in business? How can I contact him? If anybody id passing by, thank you in advance All the best.
Thanks a lot Saint Beogrowler.