TechNL Posted March 20, 2024 Posted March 20, 2024 I have a problem with a Goldmund Studietto, the previous owner was less careful with the player and somehow broke the wiring from the arm to the electronics. Does anyone have a schematic of this device or can anyone give me detailed photos of the wiring in the arm and the electronics? thank you in advance.
Pegasus Posted March 20, 2024 Posted March 20, 2024 Which arm do you have fitted? Linear tracking or a traditional pivoting tonearm. Have you looked on Vinyl Engine ? https://www.vinylengine.com/library/goldmund/studio.shtml I've got one in a box that I will restore when I get the time. 1
Willco Posted March 21, 2024 Posted March 21, 2024 Yes Pegasus is correct--all the Goldmund Arm and TT Manuals and instruction PDF's are available on Vinyl Engine--I just had look at them. they are downloadable. Good Luck, Willco 1
TechNL Posted March 21, 2024 Author Posted March 21, 2024 Vinylengine only contains a user manual, I really need detailed information about the wiring to and from the arm, because some wiring has been pulled off the solder tab, so I can no longer figure out where it is based on the color of the wire. was connected. The detailled info like a schematics, is not available.
TechNL Posted March 21, 2024 Author Posted March 21, 2024 A, I can see where the confusion comes from, I forgot to mention that it concerns the T5 arm...
TechNL Posted March 21, 2024 Author Posted March 21, 2024 I see that there are many similarities in the control of the arm between the studio and the studioette and I was able to trace a lot back to it based on the drawn diagram of VinylEngine. In the meantime I have repaired the cabling and everything has been reconnected, now looking for a connector for the power supply of the arm......
TechNL Posted March 21, 2024 Author Posted March 21, 2024 It's going to be a bit of a monologue with myself but I do have another question. Who can tell me what the weight of the balance-weight of the arm is, unfortunately the seller did not include it, so I will have it answered by someone else. friend of mine, but then I need to know what weight that should be.
Warren Jones Posted March 21, 2024 Posted March 21, 2024 Good luck with the schematic. I had a Goldmund T3F off a friends Goldmund Reference. The arm was would power on but do nothing, I contracted Goldmund and Pierre Lurne for a schematic so I could diagnose/repair it. I had no response from either. That arm was also sold on the Audiomeca TT Pierre Lurne designed it.
TechNL Posted March 22, 2024 Author Posted March 22, 2024 In the meantime I have been able to repair the cabling and all I need is a weight for the arm
skies2clear Posted March 26, 2024 Posted March 26, 2024 Unfortunately Goldmund aren't helpful with any of their old vinyl equipment. The T5 did appear on the Lurne TT, but I doubt the T3 did apart from on the Goldmund Studio or Reference. The counterweights are made from lead and come in various weights (err...CAME in various weights) by varying thickness (not the diameter). If you want dimensions I can measure some and let you know. I had a gent here make some for me years ago so you could do the same. BTW, machining lead isn't as easy as you might think because it is soft and milling bits can "grab" easily, but it can be done. Then once made, simply spray with some matt or satin black paint to make the appearance pretty. A hole is drilled in the side for a tapped thread suitable for a small grub screw to hold the counterweight from moving.
TechNL Posted March 26, 2024 Author Posted March 26, 2024 Thank you for your response, I now have the player fully working again except for the weight. I have experimentally determined that the weight is around 110 grams with a hole of 12 mm, 33 mm long and the diameter is around 24 mm. I haven't thought about the possibility of lead yet, but that is indeed an option. As for Goldmund's support, there has been deafening silence after sending my email to them.... I don't expect to hear anything from them.
skies2clear Posted March 27, 2024 Posted March 27, 2024 Good work Andre, here are my measurements using a caliper gauge for an original T5 counterweight that comes supplied. If anything isn't clear in my quick and dirty drawing, just sing out with any questions
Warren Jones Posted March 27, 2024 Posted March 27, 2024 I made a lead CW, I used an Aluminium ring and poured the lead in the AL comes off easy, You could also use hardwood and cut a hole the correct size. Machining lead can be done by placing the CW in the freezer and using coolant to drill the holes. 1
TechNL Posted March 28, 2024 Author Posted March 28, 2024 Thank you for taking the time to measure the counter weight and put it on a drawing, I can really do something with this and it is certainly appreciated. The idea of using something made of aluminum or wood and then pouring lead in it is also a good idea.
skies2clear Posted March 28, 2024 Posted March 28, 2024 You are very welcome. My first attempt was similar making a mold and it worked fine, but I found a guy with a machine shop who made one for me by machining a cylinder of lead which I made and this looked even better than the original. It was for a T3B arm. As Warren said, you need to use a cutting liquid, like ethylene glycol (coolant) to avoid bits grabbing the lead when machining or drilling. Instead of using an Allen head bolt for tightening the counterweight, it's easier to use a grub screw which means you don't have to countersink the screw head. The T5 on a Studietto is a really nice sounding setup with the right cartridge. I've heard both MCs and MMs sound great on it.
TechNL Posted May 22, 2024 Author Posted May 22, 2024 In the meantime, I also have the counterweight ready and I can start playing with this beauty I can see that I have swapped two LEDs, the green one lights up while playing and the red one lights up briefly when the arm is moved. Does anyone have any nice tips about what kind of damping fluid I can use? Is it really necessary to do something with that damping?
Recommended Posts