Rock-ola 474 Sybaris

[Ron Rich]

Pete,
IF, genuine, it WILL say "Shure" ( or older ones said "Rowe") right on it --if not--it's a knock-off, and I suspect a "Phunny brand" item--which, IMHO, I find fair to poor-- READ our of topic "Scams" posts ! Ron Rich

[prime]

My cart is a M44Mr and it has the word Sure stamped on it, the stylist does not say Sure but Sure does not make a replacement anymore,If i get lucky i may find a NOS somewhere. Needles4jukebox is one of the listed suppliers so i thought they would have at lease as best as i can get aftermarket.

[Ron Rich]

Hi Pete,
Probably true--(Didja AXK, as it says to do, in the off topic section ? Also states that "---listings are listings--NOT, recommendations---", in the first section???)-- but that does not mean the needle you get is any good ! I dono which "brand" of these, needles sells, but like all aftermarket stuff--Quality assurance is seemingly poor- that's why I ave up as an "authorized", "Phunnie brand", needle seller, many moons ago ! Ron Rich

[prime]

I read your scam post and realize how difficult it would be to get genuine parts. In my case the sound is pretty good i just have that issue with using the stereo selector. The mono sounds very good but i hate a mystery that seems unsolvable. pete

[jukenorman]

Hi Pete,
Have you checked that the mute relay is functioning correctly? It has two changeover contacts (one per channel) and they are in circuit immediately before the balance control pot.. Otherwise I think that the only way to solve this is to do a proper technical investigation - inject a signal at the front end and trace it through the amplifier. And for that, the amplifier schematic is a must! I doubt that the cartridge/stylus is the problem.

Norman.

[prime]

I have an update, this may help or make things worse, I took a very close lock at the connections to the cart, I noticed the the white wire (left feed) was barely connected. Painstakingly i re soldered the white wire to the cart. I started the unit and found that now the issue is when the switch is in mono, i switched to stereo and it sounded great but within about 30 seconds the speaker overload tripped ( or at least i think it was the overload) I checked fuses , all ok and waited 5 minutes, restarted unit and selected a record, sound played again , i touched the stereo/mono switch and it tripped again. Not sure whats going on. I made sure all cart wiring is as per schematics and made sure they were separated. I removed amp to look at the switch, unfortunately my manual from Victory Glass has not arrived yet so i can not confirm someone has changed the wiring to the switch. pete

[Ron Rich]

Hi Pete,
The cart wiring should not "trip the O'load"-- What are the outputs set at, -do you have the original proper speakers, connected properly, and is there, or is there not anything else connected to the outputs ? Ron Rich

[Ron Rich]

P.S. Are you switching that switch with power on, or off ? Have you used a good cleaner on that switch ? Didja check the mute relay, as Norman suggested above ? Ron Rich

[prime]

Hi Ron i removed the cart and i see now the left coil is open, Im not sure but i think the cart has had a very poor connection to the left side for quite a while, the first time i inspected before reattaching the white, i found it was only connected by a strand, and these strands are very small. Handling it may have damaged it, reattaching and using it may have damaged it, or it was faulty before i started. One thing i am pretty sure of left side never had much of a signal. I will have to get another cart. So the unit never went into overload, the cart failed. pete

[Ron Rich]

Pete,
I hope you did not attempt to solder directly to the cart- ALWAYS use a "slide-on connector" on all carts !! Ron Rich

[prime]

I soldered on to the slide on connector, not the cart pin. I tried to get a replacement cart but only found an aftermarket AT3600 from Needles4jukebox John Durfee. Not sure if the Shure cart i have can be repaired. pete