# Need sony spindle motor rf-300f-12350

D

#### dpf923

Jan 1, 1970
0
my sony dvp-ns41p dvd player from costco stopped working after about 1
months with a "can't read this disc" type of message and after takin
the top of I could see the disc was not turning. I gave the disc
little push and off it went but only for a minute or so, then when
tried pushing it again it would not move. I disconnected the moto
terminals from the board and ohmed it out. It read's as an open circui
so I figure the motor is shot. I removed the motor and the label reads

mabuchi
rf-300f-12350
D/V 13.0

I went to the mabuchi motor web site and I can see lots of spindl
motors but not this one. The closest seems to be the rf-300fa-1235
which is a 1.5V to 6.0V motor. I also found some web pages on how t
transplant new brushes into this motor from a donor motor. Since m
motor is toast anyway I took the back off following the procedure an
could see that they teeeny little brushes were worn to a nub. Proble
is I don't have a donor motor handy so I keep looking for
replacement. It seems from the mabuchi web site that maybe this moto
isn't sold on the open market but only to sony. It seems so poorly mad
that sony must have begged them to squeeze every last cent out of th
poor little thing.

When I google the part number I do finds some potential suppliers.
One is Impel electronic spare parts. They say that they have importe
spare parts from Singapore for the Polish market up to 2005 and sinc
then have opened an E-store for the EC and will sell this motor fo
3.09 Euros. I'm a little bit concerned however because they have
photo of the motor on their web site and the label on the motor reads:

mabuchi
rf-300f-12350
D/V 5.9

The D/V number 5.9 does not match the 13.0 on my motor so I wonder i
this is really the right replacement motor.

Another supplier is mat electronics, They describe this part number a
working with SONY DVP NS325/425 and Philips DVP 642 as a HIGH FAILUR
PART! I believe the HIGH FAILURE PART! On the Mat web site they show
photo that looks like the correct motor but the label is fuzzed out s
you can't really read if this is a mabuchi motor or not and I can'
read the D/V number from the picture. I emailed them and Mike says tha
he can't say anything more than it's a 12V motor and will work with th
listed models.
the price is 3.95 + 2.00(handling) + 6.50(shipping) about 12.50 withou
tax.
Well my model wasn't one of the listed models so I'm a littl
concerned.

If this were the real deal I would buy it. has anyone else tired thi
part? Is it
a real mabuchi motor and will I be able to use it as a replacement

B

#### Brittany Martin

Jan 1, 1970
0
my sony dvp-ns41p dvd player from costco stopped working after about 14
months with a "can't read this disc" type of message and after taking
the top of I could see the disc was not turning. I gave the disc a
little push and off it went but only for a minute or so, then when I
tried pushing it again it would not move. I disconnected the motor
terminals from the board and ohmed it out. It read's as an open circuit
so I figure the motor is shot. I removed the motor and the label reads

mabuchi
rf-300f-12350
D/V 13.0

I went to the mabuchi motor web site and I can see lots of spindle
motors but not this one. The closest seems to be the rf-300fa-12350
which is a 1.5V to 6.0V motor. I also found some web pages on how to
transplant new brushes into this motor from a donor motor. Since my
motor is toast anyway I took the back off following the procedure and
could see that they teeeny little brushes were worn to a nub. Problem
is I don't have a donor motor handy so I keep looking for a
replacement. It seems from the mabuchi web site that maybe this motor
isn't sold on the open market but only to sony. It seems so poorly made
that sony must have begged them to squeeze every last cent out of the
poor little thing.

When I google the part number I do finds some potential suppliers.
One is Impel electronic spare parts. They say that they have imported
spare parts from Singapore for the Polish market up to 2005 and since
then have opened an E-store for the EC and will sell this motor for
3.09 Euros. I'm a little bit concerned however because they have a
photo of the motor on their web site and the label on the motor reads:

mabuchi
rf-300f-12350
D/V 5.9

The D/V number 5.9 does not match the 13.0 on my motor so I wonder if
this is really the right replacement motor.

Another supplier is mat electronics, They describe this part number as
working with SONY DVP NS325/425 and Philips DVP 642 as a HIGH FAILURE
PART! I believe the HIGH FAILURE PART! On the Mat web site they show a
photo that looks like the correct motor but the label is fuzzed out so
you can't really read if this is a mabuchi motor or not and I can't
read the D/V number from the picture. I emailed them and Mike says that
he can't say anything more than it's a 12V motor and will work with the
listed models.
the price is 3.95 + 2.00(handling) + 6.50(shipping) about 12.50 without
tax.
Well my model wasn't one of the listed models so I'm a little
concerned.

If this were the real deal I would buy it. has anyone else tired this
part? Is it
a real mabuchi motor and will I be able to use it as a replacement?

try putting another DVD in it. Like the one I just got where a fat boy
is screaming and crying while being beaten with a baton.

A

#### Arfa Daily

Jan 1, 1970
0
dpf923 said:
my sony dvp-ns41p dvd player from costco stopped working after about 14
months with a "can't read this disc" type of message and after taking
the top of I could see the disc was not turning. I gave the disc a
little push and off it went but only for a minute or so, then when I
tried pushing it again it would not move. I disconnected the motor
terminals from the board and ohmed it out. It read's as an open circuit
so I figure the motor is shot. I removed the motor and the label reads

mabuchi
rf-300f-12350
D/V 13.0

I went to the mabuchi motor web site and I can see lots of spindle
motors but not this one. The closest seems to be the rf-300fa-12350
which is a 1.5V to 6.0V motor. I also found some web pages on how to
transplant new brushes into this motor from a donor motor. Since my
motor is toast anyway I took the back off following the procedure and
could see that they teeeny little brushes were worn to a nub. Problem
is I don't have a donor motor handy so I keep looking for a
replacement. It seems from the mabuchi web site that maybe this motor
isn't sold on the open market but only to sony. It seems so poorly made
that sony must have begged them to squeeze every last cent out of the
poor little thing.

When I google the part number I do finds some potential suppliers.
One is Impel electronic spare parts. They say that they have imported
spare parts from Singapore for the Polish market up to 2005 and since
then have opened an E-store for the EC and will sell this motor for
3.09 Euros. I'm a little bit concerned however because they have a
photo of the motor on their web site and the label on the motor reads:

mabuchi
rf-300f-12350
D/V 5.9

The D/V number 5.9 does not match the 13.0 on my motor so I wonder if
this is really the right replacement motor.

Another supplier is mat electronics, They describe this part number as
working with SONY DVP NS325/425 and Philips DVP 642 as a HIGH FAILURE
PART! I believe the HIGH FAILURE PART! On the Mat web site they show a
photo that looks like the correct motor but the label is fuzzed out so
you can't really read if this is a mabuchi motor or not and I can't
read the D/V number from the picture. I emailed them and Mike says that
he can't say anything more than it's a 12V motor and will work with the
listed models.
the price is 3.95 + 2.00(handling) + 6.50(shipping) about 12.50 without
tax.
Well my model wasn't one of the listed models so I'm a little
concerned.

If this were the real deal I would buy it. has anyone else tired this
part? Is it
a real mabuchi motor and will I be able to use it as a replacement?

Generally speaking, all of the motors are pretty much the same. If it looks
right, and has the terminals pins in the right place to fit the connector
PCB, then in my experience, it will work. Voltage is not normally the issue.
The variation numbers usually come from different shaft lengths, but here's
the trick. Did you measure the turntable height carefully, before removing
it ? This setting is very *very* critical for correct operation on DVD
decks, which is why replacement spindle motors for DVD players, as opposed
to CD players, normally come prealigned on a sub-deck.

Arfa

F

#### Franc Zabkar

Jan 1, 1970
0
my sony dvp-ns41p dvd player from costco stopped working after about 14
months with a "can't read this disc" type of message and after taking
the top of I could see the disc was not turning. I gave the disc a
little push and off it went but only for a minute or so, then when I
tried pushing it again it would not move. I disconnected the motor
terminals from the board and ohmed it out. It read's as an open circuit
so I figure the motor is shot. I removed the motor and the label reads

mabuchi
rf-300f-12350
D/V 13.0

I went to the mabuchi motor web site and I can see lots of spindle
motors but not this one. The closest seems to be the rf-300fa-12350
which is a 1.5V to 6.0V motor.

I'd locate the motor driver chip. If your player is anything like the
ones I've seen, then this IC should be near the cables that go to the
DVD loader. I'd then locate the datasheet for this chip and determine
the motor's maximum possible voltage rating from that. Another way
would be to find this chip's supply pin(s) and use a multimeter to
trace it back to a labelled power connector. If the chip is powered
solely from a 5V supply, then a 6V motor will definitely be OK. If the
supply is 12V, or 12V and 5V, then a 6V motor *may* still be OK ... if
the chip's output is limited by the external logic. Something else you
could check are the specs of the sled and tray motors. These motors
would be powered from the same chip, although not necessarily from the
same supply rail.

- Franc Zabkar

A

#### Arfa Daily

Jan 1, 1970
0
Franc Zabkar said:
I'd locate the motor driver chip. If your player is anything like the
ones I've seen, then this IC should be near the cables that go to the
DVD loader. I'd then locate the datasheet for this chip and determine
the motor's maximum possible voltage rating from that. Another way
would be to find this chip's supply pin(s) and use a multimeter to
trace it back to a labelled power connector. If the chip is powered
solely from a 5V supply, then a 6V motor will definitely be OK. If the
supply is 12V, or 12V and 5V, then a 6V motor *may* still be OK ... if
the chip's output is limited by the external logic. Something else you
could check are the specs of the sled and tray motors. These motors
would be powered from the same chip, although not necessarily from the
same supply rail.

- Franc Zabkar
--

The motor supply voltage - often designated "+M" or "M+" is very typically
8v on all players

Arfa

F

#### Franc Zabkar

Jan 1, 1970
0
The motor supply voltage - often designated "+M" or "M+" is very typically
8v on all players

Arfa

I couldn't find the circuits for the subject player, but here is the
service manual for another Sony player:

http://mavelec11.free.fr/schemas/Sony/DVP-NS305_310_315_405_410_415.pdf

It uses a FAN8034L motor control IC. This IC has three rails, SVCC
(+5V), PVCC1 (+11V), and PVCC2 (+11V). In the absence of a datasheet,
I assume that SVCC powers the logic and PVCCx powers the motors and
tracking/focus coils.

OTOH, I have a Sunplus reference circuit that shows a typical BA5954
motor controller with all three rails connected to +5V.

Here is a Cheertek reference design with all three rails connected to
+5V:

http://www.users.on.net/~fzabkar/DVD/Cheertek/

- Franc Zabkar

#### eleska

Mar 2, 2010
1
Sony - Ridiculous DVD Failure Rate

Thought I would join the forum just to respond to this thread and encourage product improvement from (or stick it to) Sony, who seems to have a ridiculous failure rate with their component DVD drives.

I have several DVP-NC75H Sony DVD changers that have died due to drive motor failures. My company also used the same or similar Sony DVD changers in our audio setups for smaller salons/spas that needed inexpensive combo drives for special in-house audio.

Every single one of them failed at some point just beyond the warranty period by a few months. They all experience the never ending "LOADING" message that appears on the display.

If you were to open the cover and spin the disc clockwise with your hand, it would take off and spin on it's own, eventually loading the disc. After turning it off, it would eventually hit a dead spot on the motor and not start on it's own again.

To further the frustration with Sony DVD products, we installed a series of Yamaha surround systems in spa rooms for special relaxation surround discs that were in the DVD-A format, which also died within 18 months. Upon removing the cover, we found the infamous SONY casted into the play head / motor mechanism.

In all cases it was motor failure on the DVD drive. Planned obsolescence at a ridiculous level by SONY. This further becomes obvious if you attempt to source a MABUCHI replacement motor with the same part number. The motor is made specifically for SONY and not available to the public through any supplier. In one case, there is a supplier online that has had to blur out the identification numbers on the motor within his online store catalog just to avoid issues.

The motor in my case was the RF-300F-12350 with the 5.9V designation on it, which I could not find an exact replacement online for and a few Mabuchi suppliers wouldn't even discuss over the phone.

On a whim I picked up a few RF-300FA-12350 motors on Ebay for $7. The picture online did not match the 5.9V designation, however I thought I'd give it a try. Worked perfectly. Wires were a bit shorter but managed. DVD players are back in operation, no thanks to SONY. Typically I've always been a huge Sony supporter, from the first release of the portable CD player (that still runs by the way), through multiple sets of the ES series surround components. Now it looks like it's time to change my brand loyalty. Bottom line, grab a motor online even if it seems close. You'll most likely get your player working for under$10.

D
Replies
2
Views
2K
C
Replies
3
Views
1K
Kristy
K
C
Replies
1
Views
1K
Andrew Rossmann
A
C
Replies
20
Views
4K
rbanke
R
Replies
2
Views
384