|
Audio Asylum Thread Printer Get a view of an entire thread on one page |
For Sale Ads |
71.221.210.215
In Reply to: SCD777/SCD1 Sled motor mystery.. posted by DEON on April 12, 2007 at 23:27:14:
It has been posted here by a couple of the technicians that work on these, that they have yet to replace one... or rarely... that all they need is a good cleaning out of the carbon dust...
Follow Ups:
> It has been posted here by a couple of the technicians that work on these, that they have yet to replace one... or rarely... <This is true - as I'm one of these techs - BUT - if a source of these motors were readily available CHEAP - then it would be simplier (= quicker = cheaper for the client) and far more certain to change them than go through the messy and not always successful repair actions.
> all they need is a good cleaning out of the carbon dust... <
This is incorrect and shows a misunderstanding of what's been written about the job. What has to be done is to re-burnish the motor's brushes so a stable electrical connection between the rotor to stator is made internally in the motor.
This actually burns away the used layer of the brush's surface to present a new clean surface so a good connection is made again - obviously it can't be done too many times before there are no brushes left.
Hence a source of new motors would be a real nice thing to have available.
Regards, Allen
It is missunderstood here that there is a shortage of sled motors...
You need to order the "Loading motor assembly" part# A4672674A I have 2 times ordered, and I should recieve my second motor soon. I don't know if the part # is different in Europe, but the part description should still be the same.
Just now ran it and it is listed as "unavailable".
An ongoing parts problem... if you look at previous posts about these replacement parts, you will see that it is common for sony to show nothing in stock when you order.
Hi,This is also good news, if the motor fits for sled assembly..?
However, looks like Sony charge around 90 USD for them, and are available only in USA.
Finding some alternative should still make some sense, considering the price..Regards, Davorin
Rick
The part number you referenced is the motor that drives the loading drawer on the chassis top cover-- not the CD sled/transport. To my knowledge the loading drawer motor is not a point of failure.
Same motor, you just need to swap pulleys...
HiIs that a fact..?
I finally take of the cover and inspect transport on my 777, sled motor is standard Mabuchi RF-300CH.
Why Sony ships RF-500TB-12560 for sled motor replacement, it looks to be electrical quite different..
Draw motor is covered with black plastic housing, looks like RF-500TB-12560, no markings on it..
Deon,
You remember this post right? I am not the only one that ordered this part from Sony (Sony changed the part # from the origional)Rick
- http://db.audioasylum.com/cgi/m.mpl?forum=hirez&n=234391&highlight=A4672674A&r=&session= (Open in New Window)
Hi,Yes, of course, that is the post that did make me curios, because of RF-500TB-12560 markings on motor, this is standard Mabuchi motor.
However, there is Mabuchi RF-300CH for sled motor in my 777, so I can only conclude that
both of them, Mabuchi RF-300CH or RF-500TB-12560 should work fine.
They are both available from many places, regardless of Sony’s spare-parts stock, what for me is a god thing to now.
Any online vendors for the Mabuchi RF-300CH motor? I still think Stang ordered the wrong motor ass'y, and the RF-500TB is meant for the door and not compatible with the sled... until someone can confirm that the RF-500TB actually works as the sled motor...the spare sled motor I have is also the RF-300 one I think (which was previously discussed back a month or two ago).
I compared both assemblies today & these two motors have very different dimensions, different off-sets between mounting screws, and different off-sets between solder tabs. I have not removed the drawer motor from its rubber jacket, but it looks like it is much too big to fit in the sled motor bracket.
I was told by Sony's Technical person that these were the same motor, so I ordered 2 of them.. looks like I will be returning them!Well... I thought I was giving the right information, as it was what was told to me from Sony...
| ||||||||||||
|
This post is made possible by the generous support of people like you and our sponsors: