Sony TC-K590: capstan-motor always running when power is on?

[Robert Linden]

Hello!
I got a Sony TC-K590-tape-deck. It seems to work ok, only one thing is
strange. The capstan-motor is running as soon as the deck is powered on.
Even without tape, door open/close doesn't matter. No "need" to press play for
it to start running.
First I thought it might be similar to this problem:
http://sci.tech-archive.net/Archive/sci.electronics.repair/2006-11/msg00903.html
But here there was action even when it was powered down. Also my backlight
is dark/normal. And the faulty resistor mentioned is not the same value in the
K590 as in Alans K620, so they might not be that similar.
I got the thing used and in this state, so I don't know if it always did this.
Does anybody have an idea what might be wrong, or even how to fix it? Or is
this maybe even normal? I've never seen that on another tape and it doesn't
seem to be a healthy behaviour.
Thanks a lot for any hints.
All the best,
rob

 

[Meat Plow]

Hello!
I got a Sony TC-K590-tape-deck. It seems to work ok, only one thing is
strange. The capstan-motor is running as soon as the deck is powered on.
Even without tape, door open/close doesn't matter. No "need" to press play for
it to start running.
First I thought it might be similar to this problem:
http://sci.tech-archive.net/Archive/sci.electronics.repair/2006-11/msg00903.html
But here there was action even when it was powered down. Also my backlight
is dark/normal. And the faulty resistor mentioned is not the same value in the
K590 as in Alans K620, so they might not be that similar.
I got the thing used and in this state, so I don't know if it always did this.
Does anybody have an idea what might be wrong, or even how to fix it? Or is
this maybe even normal? I've never seen that on another tape and it doesn't
seem to be a healthy behaviour.
Thanks a lot for any hints.
All the best,
rob

I've a Teac that the capstan powers up with the on switch so that part is
not abnormal for some decks, especially higher end units. Can't comment on
the other problems you perceive.

 

[William Sommerwerck]

I can't think of any good tape recorder I've owned that _didn't_ run the
capstan motor all the time. It simply makes sense.

 

[Robert Linden]

I can't think of any good tape recorder I've owned that _didn't_ run the
capstan motor all the time. It simply makes sense.

Oh. My other non-crappy recorder (onkyo ta-2550) doesn't do it. Thanks for the
info (also to Meat Plow). Care to explain why that makes sense? The downsides
are that it wastes power and make (soft, but anyway) noises. What is it good for?

Thanks & all the best,
rob

 

[William Sommerwerck]

Oh. My other non-crappy recorder (Onkyo TA-2550) doesn't do it. Thanks for the
info (also to Meat Plow). Care to explain why that makes sense? The downsides
are that it wastes power and make (soft, but anyway) noises. What is it

good for?


The power waste is minimal, because people don't usually leave their tape
decks turned on without playing or recording.

The practical advantage is that the capstan is "guaranteed" to be running at
the right speed when the tape starts moving. That's something you'd expect
from a "professional" (or "good amateur") tape deck.

 

[Michael A. Terrell]

Oh. My other non-crappy recorder (onkyo ta-2550) doesn't do it. Thanks for the
info (also to Meat Plow). Care to explain why that makes sense? The downsides
are that it wastes power and make (soft, but anyway) noises. What is it good for?

Thanks & all the best,
rob

The capstan motor usually has a fan blade to cool the deck.


--
Service to my country? Been there, Done that, and I've got my DD214 to
prove it.
Member of DAV #85.

Michael A. Terrell
Central Florida

 

[JANA]

If I remember correctly, the capstan runs all the time in your model type.
Many types of tape decks run this way.

--

JANA
_____


Hello!
I got a Sony TC-K590-tape-deck. It seems to work ok, only one thing is
strange. The capstan-motor is running as soon as the deck is powered on.
Even without tape, door open/close doesn't matter. No "need" to press play
for
it to start running.
First I thought it might be similar to this problem:
http://sci.tech-archive.net/Archive/sci.electronics.repair/2006-11/msg00903.html
But here there was action even when it was powered down. Also my backlight
is dark/normal. And the faulty resistor mentioned is not the same value in
the
K590 as in Alans K620, so they might not be that similar.
I got the thing used and in this state, so I don't know if it always did
this.
Does anybody have an idea what might be wrong, or even how to fix it? Or is
this maybe even normal? I've never seen that on another tape and it doesn't
seem to be a healthy behaviour.
Thanks a lot for any hints.
All the best,
rob

 

[googlebot]

I can't think of any good tape recorder I've owned that _didn't_ run the
capstan motor all the time. It simply makes sense.

Makes sense for the companies that sell motors,your answer makes as much sense
as leaving your car running all the time.

A lot of decks run all the time,your Sony included.Do NOT leave it on when not using it
unless you are fond of replacing motors.