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
Greetings- I own a RX2 t.t., recently I have replaced the MMC5 that the needle was worn out - I do like this table! With the 'new' MMC5 installed, the mechanism works as always, tracking and weight is correct. beautiful sound from the Left Channel. Nothing but buzz from the right. Before this cartridge, I had difficulties with the RCA plug - It needed unplugging and re-plugging to get that channel coming through, and when I touched the RCA Right it created the ground buzz. I have never opened this RX@, so I thought - It might be the output cable. What I found, is fine hair-like copper wires exiting the tonearm, and soldered to the output pc board, which was covered in black cloth tape. I have opened a few Turntables in my analog life - and have always found the wiring exiting the tonearm to be four color coded wires. Is this copper wiring unique to B&O turntables? Any help is appreciated. I definitely don't want to touch the wiring as it is - I don't have a soldering tip small enough!
I would check the external signal cable first.The original cables tend to break internally about 5cm from the RCA plugs.Cut off 10cm and fit new plugs. Or replace the cable altogether.
Same goes for all of the "X-range" (Beogram TX, TX2, RX, RX2, CDX, CDX2).
Martin
Thanks, Martin I replaced the rca plug for the bad ground connection, and went about 10 cm from the plug. So next is replacing the complete plug assembly. Have you replaced one? what is done to protect the fine tonearm wires? Removing the pc board will stress those for certain. Replacing is something I can certainly do. I just don't want to damage those fine wires. The RX2 service manual doesn't address such a procedure.
Do a continuity test first. The problem could be with the cartridge. That wouldn't be a first.
Keep in mind to do continuity tests only when the deck "plays", since the muting function will otherwise short everything to ground.
Muting function? How so? Is this a function performed by the output p.c. board?
It's a sliding switch operated by the tonearm lifting mechanism.The switch shorts both outputs to ground, when the tonearm is not lowered.It cuts out the thumb sound of the needle landing on the record, the noises from lifting away again, the noise fromneedle cleaning, cartridge replacements as well as any other standby noise.
Thank you - what a great function! I have yet to do continuity - but that is my next step.