Dick Pierce wrote:
On 1/5/2011 6:54 PM, Trevor Wilson wrote:
wrote in message
...
I have an approximately 10 year old Pro-Ject 1.2 turntable. Over the
last year, the big heavy platter has begun scraping as it spins, and
has finally ground to a halt. If I elevate the platter, by putting a
shim (two old CDs) between it and the sub-platter, that elevates it
enough that it spins again, but with lots of wobble. Obviously not
an ideal fix.
I don't know what's happening, but I'm guessing the sub-platter
(which is what actually spins, driven by the motor/belts) has
descended/sunk a bit.
Has anyone experienced anything similar with this turntable? Is
there any way to fix this problem?
Thanks in advance!
**Common problem with some of the Pro-Ject TTs. The platter sags!
Remove the mat and look at the platter from the side. You will
probably note that the outer rim has saged, relative to the spindle.
Cheap, crappy die casting I guess.
Are you SERIOUS? The platter has sagged? Please!
**I just spoke with a mate who is very experienced in all kinds of
metal-working technology. He said that such a problem, whilst unusual in
good quality castings, is certainly not unheard of. Apparently, die casting
causes all kinds of stresses in the material, which if not controlled, can
lead to cracking and/or the deformation I described.
--
Trevor Wilson
www.rageaudio.com.au