Rescuing an amp by plugging in a headphone socket
 

My long serving Marantz PM 6010 OSE is ill and before I dump it, I
wondered if it was worth salvaging.

A while ago, one of the channels stopped working. However, when I
plugged a headphone socket in and then out, everything would be fine
for a few months. However, that doesn't work anymore.

Does that give anyone an idea of what's wrong with it?

It's hardly worth taking it to be checked out, because I'll have to
pay someone to look at it ... and might as well get a new amp. It
would be a shame though.

(I've checked it with different sources and also listening using
headphone, but that one channel has definitely gone.)

ALJ

Rescuing an amp by plugging in a headphone socket
 

"Astley Le Jasper"

My long serving Marantz PM 6010 OSE is ill and before I dump it, I
wondered if it was worth salvaging.

A while ago, one of the channels stopped working. However, when I
plugged a headphone socket in and then out, everything would be fine
for a few months. However, that doesn't work anymore.

Does that give anyone an idea of what's wrong with it?


** Eeeeeeyeeep.....


It's hardly worth taking it to be checked out, because I'll have to
pay someone to look at it ... and might as well get a new amp. It
would be a shame though.

(I've checked it with different sources and also listening using
headphone, but that one channel has definitely gone.)


** Suggests you get a can of WD40 ( or similar) a squirt a jot or two down
the headphone socket hole.

Then insert and remove a plug a couple of times.

As Bill Maynard ( aka Greengrass would say -

" it's magic ! "




....... Phil

Rescuing an amp by plugging in a headphone socket
 

Phil Allison wrote:
"Astley Le Jasper"
My long serving Marantz PM 6010 OSE is ill and before I dump it, I
wondered if it was worth salvaging.

A while ago, one of the channels stopped working. However, when I
plugged a headphone socket in and then out, everything would be fine
for a few months. However, that doesn't work anymore.

Does that give anyone an idea of what's wrong with it?


** Eeeeeeyeeep.....


It's hardly worth taking it to be checked out, because I'll have to
pay someone to look at it ... and might as well get a new amp. It
would be a shame though.

(I've checked it with different sources and also listening using
headphone, but that one channel has definitely gone.)


** Suggests you get a can of WD40 ( or similar) a squirt a jot or two down
the headphone socket hole.

Then insert and remove a plug a couple of times.

As Bill Maynard ( aka Greengrass would say -

" it's magic ! "

If the headphone socket is soldered into the PCB, it could have cracked
the track or the solder joint.
You could fix it in a heartbeat, unless you only have modern lead-free
solder.

--
Eiron.

Rescuing an amp by plugging in a headphone socket
 

"Astley Le Jasper" wrote in message
...
My long serving Marantz PM 6010 OSE is ill and before I dump it, I
wondered if it was worth salvaging.

A while ago, one of the channels stopped working. However, when I
plugged a headphone socket in and then out, everything would be fine
for a few months. However, that doesn't work anymore.

Does that give anyone an idea of what's wrong with it?

It's hardly worth taking it to be checked out, because I'll have to
pay someone to look at it ... and might as well get a new amp. It
would be a shame though.

(I've checked it with different sources and also listening using
headphone, but that one channel has definitely gone.)

The headphone jacks on some equipment disable the main output, via an
auxilary set of contacts.

Try cleaning the contacts. If that doesn't work, replace the jack or just
jumper the contacts so the outputs are on all of the time.

Rescuing an amp by plugging in a headphone socket
 

"Astley Le Jasper" wrote in message
...
My long serving Marantz PM 6010 OSE is ill and before I dump it, I
wondered if it was worth salvaging.

A while ago, one of the channels stopped working. However, when I
plugged a headphone socket in and then out, everything would be fine
for a few months. However, that doesn't work anymore.

Does that give anyone an idea of what's wrong with it?

It's hardly worth taking it to be checked out, because I'll have to
pay someone to look at it ... and might as well get a new amp. It
would be a shame though.

(I've checked it with different sources and also listening using
headphone, but that one channel has definitely gone.)

**Replace the socket. The contacts are probably dirty or corroded. The
contacts, in question, are designed to disable the speakers, when the
headphones are plugged in.


--
Trevor Wilson
www.rageaudio.com.au

Rescuing an amp by plugging in a headphone socket
 

Sounds like a speaker relay to me.

I have a Denon which has had the relay contacts cleaned a few times for this
same fault. The sound can get intermittent, or even distorted due to very
little contamination of a relay contact. Of course, I do not know if your
amp has relays, but it sounds very much like the symptoms I've had.
Brian

--
Brian Gaff -
Note:- In order to reduce spam, any email without 'Brian Gaff'
in the display name may be lost.
Blind user, so no pictures please!
"Astley Le Jasper" wrote in message
...
My long serving Marantz PM 6010 OSE is ill and before I dump it, I
wondered if it was worth salvaging.

A while ago, one of the channels stopped working. However, when I
plugged a headphone socket in and then out, everything would be fine
for a few months. However, that doesn't work anymore.

Does that give anyone an idea of what's wrong with it?

It's hardly worth taking it to be checked out, because I'll have to
pay someone to look at it ... and might as well get a new amp. It
would be a shame though.

(I've checked it with different sources and also listening using
headphone, but that one channel has definitely gone.)

ALJ

Rescuing an amp by plugging in a headphone socket
 

Yes, my thoughts at first on my problem, but in the end it turned out to be
the relay contacts, not as i thought the switch in the headphone socket.
Very strange things, contacts. Of course in my case there was no actual
switch in the headphone socket, but the phones worked if you turned off the
speakers with the speaker switches. This is counter intuitive as one would
have imagined that more current would make the relay work, not less.

As I say though if the headphone is a switch its always worth a squirt of
electrolube, NOT wd 40, for goodness sake.

Brian

--
Brian Gaff -
Note:- In order to reduce spam, any email without 'Brian Gaff'
in the display name may be lost.
Blind user, so no pictures please!
"Phil Allison" wrote in message
...

"Astley Le Jasper"

My long serving Marantz PM 6010 OSE is ill and before I dump it, I
wondered if it was worth salvaging.

A while ago, one of the channels stopped working. However, when I
plugged a headphone socket in and then out, everything would be fine
for a few months. However, that doesn't work anymore.

Does that give anyone an idea of what's wrong with it?


** Eeeeeeyeeep.....


It's hardly worth taking it to be checked out, because I'll have to
pay someone to look at it ... and might as well get a new amp. It
would be a shame though.

(I've checked it with different sources and also listening using
headphone, but that one channel has definitely gone.)


** Suggests you get a can of WD40 ( or similar) a squirt a jot or two
down the headphone socket hole.

Then insert and remove a plug a couple of times.

As Bill Maynard ( aka Greengrass would say -

" it's magic ! "




...... Phil

Rescuing an amp by plugging in a headphone socket
 

Thanks all. I'll have look at it tonight.

ALJ

Rescuing an amp by plugging in a headphone socket
 

"Brian Gaff Top Poster"

( snip TP drivel)


As I say though if the headphone is a switch its always worth a squirt of
electrolube, NOT wd 40, for goodness sake.


** Not sure how much additional " goodness " lurks in a can of Electrolube
( ?? ) spray.

But WD40 works as well or better as a contact cleaner than any of the snob
value alternatives that so many utter ******s and top posters like Mr G put
their blind faith in.




..... Phil

Rescuing an amp by plugging in a headphone socket
 

Brian Gaff wrote:
Yes, my thoughts at first on my problem, but in the end it turned out to be
the relay contacts, not as i thought the switch in the headphone socket.
Very strange things, contacts. Of course in my case there was no actual
switch in the headphone socket, but the phones worked if you turned off the
speakers with the speaker switches. This is counter intuitive as one would
have imagined that more current would make the relay work, not less.

Stressing the PCB mechnically will also make a borderline dodge relay
contact misbehave itself.

I had a Sansui amp that did that when the owner fiddled with the volume
control. You'd think the loudspeaker protection relay had a mechanical
coupling to the control - it would drop in and out on some very exact
points of the tight controls rotation.

New relay fixed it.

--
Adrian C

Rescuing an amp by plugging in a headphone socket
 

Astley Le Jasper wrote:

My long serving Marantz PM 6010 OSE is ill and before I dump it, I
wondered if it was worth salvaging.

A while ago, one of the channels stopped working. However, when I
plugged a headphone socket in and then out, everything would be fine
for a few months. However, that doesn't work anymore.

Does that give anyone an idea of what's wrong with it?

It's hardly worth taking it to be checked out, because I'll have to
pay someone to look at it ... and might as well get a new amp. It
would be a shame though.

(I've checked it with different sources and also listening using
headphone, but that one channel has definitely gone.)

ALJ

Either the PCB has soldering that is not working or the socket is the shorting kind.

- Resolder by heating up each solder island and removing the soldering iron when the
solder is liquid.

- When the jack is not inserted the socket is shorted so the output goes to your
speakers terminals on the back. When the contact surfaces of the socket get corroded
you get an intermittent connection. Inserting and removing a jack sometimes
temporarily fix this.
What you do not want to do is use WD40 to fix this. You need to clean the contact
surfaces of the socket, especially the parts that short when a jack is not inserted.
For cleaning you can fix the contact surfaces with a proper agent such as Kontakt 60
or equivalent. NOT WD40!

In the event that the socket is defaulty you would replace it with a new one at less
than 2 pounds, but if you do not use the headphone you can solder the jack to have a
permanent connection accros the jack socket, this will render the use of the socket
audible along with the speakers.
If the socket is PCB mounted ad a replacement does not have pins in the right
position simply screw it into the chassis upside down and solder small insulated
leads to the pins from the pcb, most often there is no magic to it except making sure
nothing else shorts the connections - just add a bit of thick adhesive tape if there
is a chance something may short the connections.

-Mikkel