Refurbish cassette deck motor

[RJH]

I've got a 1993 Sony cassette deck - K611S - and the capstan motor has
recently started making a loudish hum. I tried a little lithium grease
on the spindle, and the noise diappeared for a few minutes. The pitch
varies when the speed adjustment screw is twiddled.

The part (X33566461) appears out of stock everywhere, and the fault does
crop up on forums. I'm reluctant to chuck too much money at it though.

Any ideas on the cause and remedy?

Thanks, Rob

[Phil Allison]

"RJH"

> I've got a 1993 Sony cassette deck - K611S - and the capstan motor has
> recently started making a loudish hum. I tried a little lithium grease on
> the spindle, and the noise diappeared for a few minutes. The pitch varies
> when the speed adjustment screw is twiddled.
>

** The motor has a plain ( ie Oilite ) bearing - right ?

Light oil ( Singer or " 3 in 1 oil " ) is all you usually need to treat old
ones where the bearing has dried out.

FY:

Oilite bearing are made from porous metal that is soaked in oil and that oil
can disappear over time.


.... Phil

[RJH]

On 11/03/2013 02:23, Phil Allison wrote:
> "RJH"
>
>> I've got a 1993 Sony cassette deck - K611S - and the capstan motor has
>> recently started making a loudish hum. I tried a little lithium grease on
>> the spindle, and the noise diappeared for a few minutes. The pitch varies
>> when the speed adjustment screw is twiddled.
>>
>
> ** The motor has a plain ( ie Oilite ) bearing - right ?
>

Don't know. In fact, I've found one:

http://cl.ly/1f0U2k2W0f0m

ebay item 280548210478

Bit pricey so I'd like to try a repair. Would that be Oilite?

> Light oil ( Singer or " 3 in 1 oil " ) is all you usually need to treat old
> ones where the bearing has dried out.
>
> FY:
>
> Oilite bearing are made from porous metal that is soaked in oil and that oil
> can disappear over time.
>

Thanks for that - I'll give your suggestion a try.

Rob

[Phil Allison]

"RJH"
> Phil Allison wrote:
>> "RJH"

>
>> ** The motor has a plain ( ie Oilite ) bearing - right ?
>>
>
> Don't know. In fact, I've found one:
>
> http://cl.ly/1f0U2k2W0f0m
>

> Bit pricey so I'd like to try a repair. Would that be Oilite?

** Absolutely.

A simple bronze coloured bushing.

The only alternative is a ball race bearing.



.... Phil

[Trevor Wilson]

**Replace the motor. Replacements cost less than $15.00. IF the motor
can be dismantled (ie: It will have two or three small screws in the
casing), then it can be stripped down and BOTH bearings can be
lubricated with light machine oil, AFTER the bearing faces have been
cleaned. Such motors usually employ a mechanical speed regulation
system. Modern motors (ie: Anything made after 1980ish) employ
electronic speed regulation systems and are almost impossible to repair,
without a significant machine shop.

It's much easier to replace the motor. Here in Australia, they are easy
to obtain. I expect they will be available in most other places too.

--
Trevor Wilson www.rageaudio.com.au

[RJH]

I've not got round to it just yet, but I can't find a replacement listed
at less than $60US - and then I'm not sure it's in stock. Here's a pic

http://www.ebay.com/itm/Sony-Cassette-Deck-Capstan-Motor-New-/280548210478

Not sure if it has screws beneath the case tape.

Could you point me to a supplier?

Thanks, Rob

[Trevor Wilson]

**That's a bog-standard, electronically regulated Mabuchi motor. I can't
tell if it is CCW or CW (CCW is more common), but it is likely to be a
12 Volt type. It's swaged together, making repair all but impossible
(you can't get to the thrust bearing, without ripping the thing apart).
Either way, it's not worth it. My cost price is about 8 Bucks. Retail
(in Oz) would be about $12.00 ~ $15.00, depending. I have no idea where
you can buy them in Pommyland (or anywhere else). This is my supplier:

www.wes.net.au

Dunno if they'll post O/S, but it's worth a shot.

45 Bucks! (shakes head). PLUS 28 Bucks shipping! Jeez. What a rip-off.


--
Trevor Wilson www.rageaudio.com.au

[Phil Allison]

"Trevor Wilson"

>
> **That's a bog-standard, electronically regulated Mabuchi motor. I can't
> tell if it is CCW or CW (CCW is more common), but it is likely to be a 12
> Volt type. It's swaged together, making repair all but impossible (you
> can't get to the thrust bearing, without ripping the thing apart). Either
> way, it's not worth it. My cost price is about 8 Bucks. Retail (in Oz)
> would be about $12.00 ~ $15.00, depending. I have no idea where you can
> buy them in Pommyland (or anywhere else). This is my supplier:
>
> www.wes.net.au
>
> Dunno if they'll post O/S, but it's worth a shot.
>
> 45 Bucks! (shakes head). PLUS 28 Bucks shipping! Jeez. What a rip-off.
>

** FYI:

TW and myself both live in Sydney Australia - not close neighbours mind you.

I happen to live a short walk from WES Components and have been a regular
customer for over 30 years - ever since the days of Dulcie and her teenage
son "Moonface" greeted you at the counter.

The business was originally set up by a service tech ( Peter Carlini ) in
order to circumvent the highly anti-competitive and
anti-consumer spare parts monopolies held by various import agents for all
the audio and video products flooding in from Asia.

Peter found and supplied much lower cost alternatives to the most wanted
spare parts ( ie VCR heads, custom ICs and other Japanese made semis etc )
which transformed the consumer electronics service industry here. It
suddenly made it possible to economically ( and profitably ) repair most
such products long beyond the age the importers would have liked.

So the import agents all hated him.

And WES are still doing it.


.... Phil

[TonyL]

Phil Allison wrote:
>
> the highly anti-competitive and
> anti-consumer spare parts monopolies held by various import agents
> for all the audio and video products flooding in from Asia.
>

Same here. I order bits&pieces direct from Asia via Ebay.

Examples:

Camera polarizing filter...UK importer RRP 30 pounds. From Shanghai by
airmail, 3 pounds inc postage! That importer has now gone down the pan.
Good.

Wristwatch with built-in heart rate monitor...UK price 47 pounds. From China
5 pounds inc postage!

[RJH]

On 20/03/2013 10:14, Phil Allison wrote:
> "Trevor Wilson"
>>
>> **That's a bog-standard, electronically regulated Mabuchi motor. I can't
>> tell if it is CCW or CW (CCW is more common), but it is likely to be a 12
>> Volt type. It's swaged together, making repair all but impossible (you
>> can't get to the thrust bearing, without ripping the thing apart). Either
>> way, it's not worth it. My cost price is about 8 Bucks. Retail (in Oz)
>> would be about $12.00 ~ $15.00, depending. I have no idea where you can
>> buy them in Pommyland (or anywhere else). This is my supplier:
>>
>> www.wes.net.au
>>
>> Dunno if they'll post O/S, but it's worth a shot.
>>
>> 45 Bucks! (shakes head). PLUS 28 Bucks shipping! Jeez. What a rip-off.
>>

Thanks for that, appreciated

>
> ** FYI:
>
> TW and myself both live in Sydney Australia - not close neighbours mind you.
>
> I happen to live a short walk from WES Components and have been a regular
> customer for over 30 years - ever since the days of Dulcie and her teenage
> son "Moonface" greeted you at the counter.
>
> The business was originally set up by a service tech ( Peter Carlini ) in
> order to circumvent the highly anti-competitive and
> anti-consumer spare parts monopolies held by various import agents for all
> the audio and video products flooding in from Asia.
>
> Peter found and supplied much lower cost alternatives to the most wanted
> spare parts ( ie VCR heads, custom ICs and other Japanese made semis etc )
> which transformed the consumer electronics service industry here. It
> suddenly made it possible to economically ( and profitably ) repair most
> such products long beyond the age the importers would have liked.
>
> So the import agents all hated him.
>
> And WES are still doing it.
>

Excellent. Surprised there's not more like them, especially on ebay.

Rob

[RJH]

Got a motor advertised as:

EG500AD2B MABUCHI SPINDLE MOTOR EG-500AD-2B 12V CCW
for £8 delivered.

Looks to be the right size/connector, but it's labelled 'Qingfeng'
EG500AD2B. There's no speed control screw as on the original - but I'd
let that go as it wasn't specified.

Is it worth querying this brand switch with the ebay supplier?

Rob

[RJH]

In the event it works perfectly. Thanks everyone.

Rob