Hi folks - once again I turn to the oracular internet for advice for my
woes. The internet, it seems, knows Everything!

I've had a pair of these classic DJ turntables for years. Now,
suddendly and not precurred by any obviously damaging events - the
platter doesn't spin up when I press the start button. The turntable
turns on, everything lights up, but nothing happens when I press the
big button.

Now, I'm techie minded, I'm comfortable with my soldering iron and
multimeter, but I don't really know where to start with troubleshooting
this beast. Can anyone help point me in the right direction with
respect to what might need to be replaced? I *do* have the service
manual, but there aren't troubleshooting instructions in it, and the
most I would know to do is just start checking every resistor -
probably not the most efficient way of doing things...

Any help is greatly apprecieated. Thanks, folks!

Elijah

wrote in message
oups.com...

Hi folks - once again I turn to the oracular internet for advice for my
woes. The internet, it seems, knows Everything!

I've had a pair of these classic DJ turntables for years. Now,
suddendly and not precurred by any obviously damaging events - the
platter doesn't spin up when I press the start button. The turntable
turns on, everything lights up, but nothing happens when I press the
big button.

Now, I'm techie minded, I'm comfortable with my soldering iron and
multimeter, but I don't really know where to start with troubleshooting
this beast. Can anyone help point me in the right direction with
respect to what might need to be replaced? I *do* have the service
manual, but there aren't troubleshooting instructions in it, and the
most I would know to do is just start checking every resistor -
probably not the most efficient way of doing things...

Any help is greatly apprecieated. Thanks, folks!

Elijah


Some of the electro-mechanicals on these decks are not as robust as they
would seem, go for switch problem first,
some repair briefs for them on my file
http://www.divdev.fsnet.co.uk/repair3.htm

--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/

wrote:
Hi folks - once again I turn to the oracular internet for advice for
my woes. The internet, it seems, knows Everything!

I've had a pair of these classic DJ turntables for years. Now,
suddendly and not precurred by any obviously damaging events - the
platter doesn't spin up when I press the start button. The turntable
turns on, everything lights up, but nothing happens when I press the
big button.

Now, I'm techie minded, I'm comfortable with my soldering iron and
multimeter, but I don't really know where to start with
troubleshooting this beast. Can anyone help point me in the right
direction with respect to what might need to be replaced? I *do*
have the service manual, but there aren't troubleshooting
instructions in it, and the most I would know to do is just start
checking every resistor - probably not the most efficient way of
doing things...

Any help is greatly apprecieated. Thanks, folks!

Elijah

The 1200's are reliable enough that I've no experience with anything other
than the neon lamp problems, but the first thing I would check would be the
switch itself - it could be bad or have bad solder connections, and the DC
voltage supply for the motor circuit would be next on the list.


Mark Z.

wrote:
Hi folks - once again I turn to the oracular internet for advice for
my woes. The internet, it seems, knows Everything!

I've had a pair of these classic DJ turntables for years. Now,
suddendly and not precurred by any obviously damaging events - the
platter doesn't spin up when I press the start button. The turntable
turns on, everything lights up, but nothing happens when I press the
big button.

Now, I'm techie minded, I'm comfortable with my soldering iron and
multimeter, but I don't really know where to start with
troubleshooting this beast. Can anyone help point me in the right
direction with respect to what might need to be replaced? I *do*
have the service manual, but there aren't troubleshooting
instructions in it, and the most I would know to do is just start
checking every resistor - probably not the most efficient way of
doing things...

Any help is greatly apprecieated. Thanks, folks!

Elijah

Probably power supply related, or the start / stop switch itself is bad, or
has bad solder connections.

Mark Z.

Mark D. Zacharias wrote in message
. ..
wrote:
Hi folks - once again I turn to the oracular internet for advice for
my woes. The internet, it seems, knows Everything!

I've had a pair of these classic DJ turntables for years. Now,
suddendly and not precurred by any obviously damaging events - the
platter doesn't spin up when I press the start button. The turntable
turns on, everything lights up, but nothing happens when I press the
big button.

Now, I'm techie minded, I'm comfortable with my soldering iron and
multimeter, but I don't really know where to start with
troubleshooting this beast. Can anyone help point me in the right
direction with respect to what might need to be replaced? I *do*
have the service manual, but there aren't troubleshooting
instructions in it, and the most I would know to do is just start
checking every resistor - probably not the most efficient way of
doing things...

Any help is greatly apprecieated. Thanks, folks!

Elijah

The 1200's are reliable enough that I've no experience with anything other
than the neon lamp problems, but the first thing I would check would be
the
switch itself - it could be bad or have bad solder connections, and the DC
voltage supply for the motor circuit would be next on the list.


Mark Z.



I suspect the large start/stop pad encourages the use of a fist rather than
a finger.
The illuminator is a nice idea but it wangs up to an abrupt stop jarring any
bulb inside and the wires to it are so close to being guillotined each time.
The combined power on/off with that feeble cam system combined with the
strobe is a bit too gimmicky for its own good.
Love the heavy duty weighty rubber base though, shame about all those fixing
screws.

--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/

I've no idea about the specifics of this TT, but unless it is direct
drive, (unlikely I think), I'd first make sure the motor is turning (as
opposed to the platter). Has a belt become loose, an idler pulley
disintegrated?

wrote:
Hi folks - once again I turn to the oracular internet for advice for my
woes. The internet, it seems, knows Everything!

I've had a pair of these classic DJ turntables for years. Now,
suddendly and not precurred by any obviously damaging events - the
platter doesn't spin up when I press the start button. The turntable
turns on, everything lights up, but nothing happens when I press the
big button.

Now, I'm techie minded, I'm comfortable with my soldering iron and
multimeter, but I don't really know where to start with troubleshooting
this beast. Can anyone help point me in the right direction with
respect to what might need to be replaced? I *do* have the service
manual, but there aren't troubleshooting instructions in it, and the
most I would know to do is just start checking every resistor -
probably not the most efficient way of doing things...

Any help is greatly apprecieated. Thanks, folks!

Elijah

Bennett Price wrote:
I've no idea about the specifics of this TT, but unless it is direct
drive, (unlikely I think), I'd first make sure the motor is turning
(as opposed to the platter). Has a belt become loose, an idler pulley
disintegrated?

The 1200 MK series is probably the most famous direct-drive type ever.
Mainly used for DJ type work though, not so much for hi-fi.

Mark Z.

Thanks I stand corrected.

Mark D. Zacharias wrote:
Bennett Price wrote:
I've no idea about the specifics of this TT, but unless it is direct
drive, (unlikely I think), I'd first make sure the motor is turning
(as opposed to the platter). Has a belt become loose, an idler pulley
disintegrated?

The 1200 MK series is probably the most famous direct-drive type ever.
Mainly used for DJ type work though, not so much for hi-fi.

Mark Z.