Pioneer VSX-D710S help

M

Mike Paull

Guest
Hi Everyone,

After many years of fantastic service the ol girl has finally started
playing up. After being on for 15-30 mins the digital display will show
"power off" and then the amp will switch off and back on again. Once it is
back on it usually will show the same message and go through the same cycle
again after a couple of seconds and would continue to do so unless switched
off.

I have googled but found little helpful info about the subject and a call
to Pioneer yielded a "take it to one of our authorised service centres".

Before I do so, has anyone here serviced this model before or have any
clues on what might be causing the problem?

Thanks for any help offered.

Mike

ps. if anyone has a pdf of a service manual or schematic could I please
have a copy?
 
"Mike Paull" <mikey351@removethis.gmail.com> wrote in message
news:vflla3dv75j9e1crlrumgq02ivb3rbdjkl@4ax.com...
Hi Everyone,

After many years of fantastic service the ol girl has finally started
playing up. After being on for 15-30 mins the digital display will show
"power off" and then the amp will switch off and back on again. Once it is
back on it usually will show the same message and go through the same
cycle
again after a couple of seconds and would continue to do so unless
switched
off.

I have googled but found little helpful info about the subject and a call
to Pioneer yielded a "take it to one of our authorised service centres".

Before I do so, has anyone here serviced this model before or have any
clues on what might be causing the problem?
Click to expand...
**Dry solder joints, electrolytic caps, or a dodgy transistor in one of the
output stages. Somewhere.

--
Trevor Wilson
www.rageaudio.com.au



--
Posted via a free Usenet account from http://www.teranews.com
 
Take it to a technician. Does not have to be a Pioneer service center.


Rudolf

"Mike Paull" <mikey351@removethis.gmail.com> wrote in message
news:vflla3dv75j9e1crlrumgq02ivb3rbdjkl@4ax.com...
Hi Everyone,

After many years of fantastic service the ol girl has finally started
playing up. After being on for 15-30 mins the digital display will show
"power off" and then the amp will switch off and back on again. Once it is
back on it usually will show the same message and go through the same
cycle
again after a couple of seconds and would continue to do so unless
switched
off.

I have googled but found little helpful info about the subject and a call
to Pioneer yielded a "take it to one of our authorised service centres".

Before I do so, has anyone here serviced this model before or have any
clues on what might be causing the problem?

Thanks for any help offered.

Mike

ps. if anyone has a pdf of a service manual or schematic could I please
have a copy?
Click to expand...
 
On Mon, 30 Jul 2007 07:58:28 +1000, "Trevor Wilson"
<trevor@SPAMBLOCKrageaudio.com.au> wrote:

"Mike Paull" <mikey351@removethis.gmail.com> wrote in message
news:vflla3dv75j9e1crlrumgq02ivb3rbdjkl@4ax.com...
Hi Everyone,

After many years of fantastic service the ol girl has finally started
playing up. After being on for 15-30 mins the digital display will show
"power off" and then the amp will switch off and back on again. Once it is
back on it usually will show the same message and go through the same
cycle
again after a couple of seconds and would continue to do so unless
switched
off.

I have googled but found little helpful info about the subject and a call
to Pioneer yielded a "take it to one of our authorised service centres".

Before I do so, has anyone here serviced this model before or have any
clues on what might be causing the problem?

**Dry solder joints, electrolytic caps, or a dodgy transistor in one of the
output stages. Somewhere.

--
Trevor Wilson
www.rageaudio.com.au
Click to expand...
Hi Trevor,

Thanks for the tips. I've had a good look at the caps and visually there is
nothing to indicate a problem although obviously I realise that does not
mean they are ok. Now I have taken the cover off I noticed a fan that blows
air onto a rather large heatsink which has two very large ic's attatched to
it, this fan isn't switching on at all, so i'm going to grab my dmm and see
if there is voltage on the supply pins. Also going to grab a can of freeze
spray and see what effect that has.

Mike
 
Usually, fan is controlled by the signal level or temperature of the
heatsink, so it mau not come on at the start.

Rudolf


"Mike Paull" <mikey351@removethis.gmail.com> wrote in message
news:6j26b3tk2561r5f3n8deudjp167mbpmqqu@4ax.com...
On Mon, 30 Jul 2007 07:58:28 +1000, "Trevor Wilson"
trevor@SPAMBLOCKrageaudio.com.au> wrote:


"Mike Paull" <mikey351@removethis.gmail.com> wrote in message
news:vflla3dv75j9e1crlrumgq02ivb3rbdjkl@4ax.com...
Hi Everyone,

After many years of fantastic service the ol girl has finally started
playing up. After being on for 15-30 mins the digital display will show
"power off" and then the amp will switch off and back on again. Once it
is
back on it usually will show the same message and go through the same
cycle
again after a couple of seconds and would continue to do so unless
switched
off.

I have googled but found little helpful info about the subject and a
call
to Pioneer yielded a "take it to one of our authorised service centres".

Before I do so, has anyone here serviced this model before or have any
clues on what might be causing the problem?

**Dry solder joints, electrolytic caps, or a dodgy transistor in one of
the
output stages. Somewhere.

--
Trevor Wilson
www.rageaudio.com.au

Hi Trevor,

Thanks for the tips. I've had a good look at the caps and visually there
is
nothing to indicate a problem although obviously I realise that does not
mean they are ok. Now I have taken the cover off I noticed a fan that
blows
air onto a rather large heatsink which has two very large ic's attatched
to
it, this fan isn't switching on at all, so i'm going to grab my dmm and
see
if there is voltage on the supply pins. Also going to grab a can of
freeze
spray and see what effect that has.

Mike
Click to expand...
 
On Mon, 6 Aug 2007 10:05:11 +1000, "Rudolf" <aus_electronics@rumatech.com>
wrote:

Usually, fan is controlled by the signal level or temperature of the
heatsink, so it mau not come on at the start.

Rudolf
Click to expand...
Hi Rudolf,

I took some measurements tonight and found that the fan only switches on
when the volume is wound up to a specific point. The works perfectly.

Next I sprayed freeze spray on transistors and semi's on the various pcb's
that make up this amp and this had no effect what so ever. It still
displays "POWEROFF" and goes through a power cycle.

I guess next i'll start checking the pcb's for poor soldering joints, and
i'll start with the power supply pcb.

mike
 
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