Denon AVR-2700 Stuck in Standby

  • Thread starter Samuel M. Goldwasser
  • Start date
S

Samuel M. Goldwasser

Guest
This receiver worked perfectly :) until today. Pushing main power button
(a hard switch) results in the Standy and Lock LEDs turning on and nothing
else. No controls have any effect. No response from remote.

Main power transformer never receives any power, two fuses on mainboard
test good.

Any suggestions or service manual/schematics appreciated.

Thanks!

--
sam | Sci.Electronics.Repair FAQ: http://www.repairfaq.org/
Repair | Main Table of Contents: http://www.repairfaq.org/REPAIR/
+Lasers | Sam's Laser FAQ: http://www.repairfaq.org/sam/lasersam.htm
| Mirror Sites: http://www.repairfaq.org/REPAIR/F_mirror.html

Important: Anything sent to the email address in the message header above is
ignored unless my full name AND either lasers or electronics is included in the
subject line. Or, you can contact me via the Feedback Form in the FAQs.
 
On 2010-08-25 18:02:20 +0200, sam@repairfaq.org (Samuel M. Goldwasser) said:

This receiver worked perfectly :) until today. Pushing main power button
(a hard switch) results in the Standy and Lock LEDs turning on and nothing
else. No controls have any effect. No response from remote.

Main power transformer never receives any power, two fuses on mainboard
test good.

Any suggestions or service manual/schematics appreciated.

Thanks!
Click to expand...
hi,
for me it was one of the main npn transistor 2SD2560 or equivalent that
was burned
and also the two 0.22 ohms/ 2W resistor near that transistor

the main units of denon amplifiers are often almost the same
you can get a 2105 or 2106 schematic easyly on the net.

hope this helps

--
-
Jean-Yves
 
Samuel M. Goldwasser wrote:
This receiver worked perfectly :) until today. Pushing main power
button (a hard switch) results in the Standy and Lock LEDs turning on
and nothing else. No controls have any effect. No response from
remote.

Main power transformer never receives any power, two fuses on
mainboard test good.

Any suggestions or service manual/schematics appreciated.

Thanks!
Click to expand...
Here's the manual:
http://www.eserviceinfo.com/downloadsm/26005/Denon_AVR-2700.html

Good luck.

--
David Farber
Los Osos, CA
 
"David Farber" <farberbear.unspam@aol.com> writes:

Samuel M. Goldwasser wrote:
This receiver worked perfectly :) until today. Pushing main power
button (a hard switch) results in the Standy and Lock LEDs turning on
and nothing else. No controls have any effect. No response from
remote.

Main power transformer never receives any power, two fuses on
mainboard test good.

Any suggestions or service manual/schematics appreciated.

Thanks!

Here's the manual:
http://www.eserviceinfo.com/downloadsm/26005/Denon_AVR-2700.html
Click to expand...
Thanks, but unfortunately while it says service manual, it's only the
user manual.

--
sam | Sci.Electronics.Repair FAQ: http://www.repairfaq.org/
Repair | Main Table of Contents: http://www.repairfaq.org/REPAIR/
+Lasers | Sam's Laser FAQ: http://www.repairfaq.org/sam/lasersam.htm
| Mirror Sites: http://www.repairfaq.org/REPAIR/F_mirror.html

Important: Anything sent to the email address in the message header above is
ignored unless my full name AND either lasers or electronics is included in the
subject line. Or, you can contact me via the Feedback Form in the FAQs.
 
jeanyves <no-pub-for-jypochez@free.fr> writes:

On 2010-08-25 18:02:20 +0200, sam@repairfaq.org (Samuel M. Goldwasser) said:

This receiver worked perfectly :) until today. Pushing main power button
(a hard switch) results in the Standby and Lock LEDs turning on and nothing
else. No controls have any effect. No response from remote.
Main power transformer never receives any power, two fuses on
mainboard test good.

Any suggestions or service manual/schematics appreciated.
Thanks!

hi,
for me it was one of the main npn transistor 2SD2560 or equivalent
that was burned
and also the two 0.22 ohms/ 2W resistor near that transistor

the main units of denon amplifiers are often almost the same
you can get a 2105 or 2106 schematic easyly on the net.

hope this helps
Click to expand...
This was for symptoms similar to mine?

Thanks!

--
sam | Sci.Electronics.Repair FAQ: http://www.repairfaq.org/
Repair | Main Table of Contents: http://www.repairfaq.org/REPAIR/
+Lasers | Sam's Laser FAQ: http://www.repairfaq.org/sam/lasersam.htm
| Mirror Sites: http://www.repairfaq.org/REPAIR/F_mirror.html

Important: Anything sent to the email address in the message header above is
ignored unless my full name AND either lasers or electronics is included in the
subject line. Or, you can contact me via the Feedback Form in the FAQs.
 
"Samuel M. Goldwasser" <sam@repairfaq.org> wrote in message
news:uaaoawuib.fsf@repairfaq.org...
This receiver worked perfectly :) until today. Pushing main power button
(a hard switch) results in the Standy and Lock LEDs turning on and nothing
else. No controls have any effect. No response from remote.

Main power transformer never receives any power, two fuses on mainboard
test good.

Any suggestions or service manual/schematics appreciated.

Thanks!

--
sam | Sci.Electronics.Repair FAQ: http://www.repairfaq.org/
Repair | Main Table of Contents: http://www.repairfaq.org/REPAIR/
+Lasers | Sam's Laser FAQ: http://www.repairfaq.org/sam/lasersam.htm
| Mirror Sites: http://www.repairfaq.org/REPAIR/F_mirror.html

Important: Anything sent to the email address in the message header above
is
ignored unless my full name AND either lasers or electronics is included
in the
subject line. Or, you can contact me via the Feedback Form in the FAQs.
Click to expand...

If you'd like to email me at

mark_zacharias@labolgcbs.net

notice the underscore "_" and reverse the domain to read "sbcglobal.net" I
can e-mail you the manual in .RAR chunks for reassembly on your end.
Please specify the size of attachments you can take, 8 meg or whatever.

Does it go back to standby and blink the power LED or not even respond to
pressing the power standby button?

There could be a "secret decoder ring" reset procedure to unlock it after a
protect mode has been triggered. This is increasingly common.

Mark Z.
 
"Samuel M. Goldwasser" <sam@repairfaq.org> wrote in message
news:u62yywgv9.fsf@repairfaq.org...
"David Farber" <farberbear.unspam@aol.com> writes:

Samuel M. Goldwasser wrote:
This receiver worked perfectly :) until today. Pushing main power
button (a hard switch) results in the Standy and Lock LEDs turning on
and nothing else. No controls have any effect. No response from
remote.

Main power transformer never receives any power, two fuses on
mainboard test good.

Any suggestions or service manual/schematics appreciated.

Thanks!

Here's the manual:
http://www.eserviceinfo.com/downloadsm/26005/Denon_AVR-2700.html

Thanks, but unfortunately while it says service manual, it's only the
user manual.

--
sam | Sci.Electronics.Repair FAQ: http://www.repairfaq.org/
Repair | Main Table of Contents: http://www.repairfaq.org/REPAIR/
+Lasers | Sam's Laser FAQ: http://www.repairfaq.org/sam/lasersam.htm
| Mirror Sites: http://www.repairfaq.org/REPAIR/F_mirror.html

Important: Anything sent to the email address in the message header above
is
ignored unless my full name AND either lasers or electronics is included
in the
subject line. Or, you can contact me via the Feedback Form in the FAQs.
Click to expand...

I downloaded the manuals - there is a reset (initalization) procedure.

Press and hold the STEREO and DIRECT buttons while pressing the main power
switch. When the display segments all light up and flash at 1 second
intervals you can release the buttons.
These types of mysterious lockups used to be extremely common on some Denon
models. Actually, it's still fairly common...

Mark Z.
 
"Mark Zacharias" <mark_zacharias@sbcglobal.net> writes:

"Samuel M. Goldwasser" <sam@repairfaq.org> wrote in message
news:uaaoawuib.fsf@repairfaq.org...
This receiver worked perfectly :) until today. Pushing main power button
(a hard switch) results in the Standy and Lock LEDs turning on and nothing
else. No controls have any effect. No response from remote.

Main power transformer never receives any power, two fuses on mainboard
test good.

Any suggestions or service manual/schematics appreciated.

Thanks!

--
sam | Sci.Electronics.Repair FAQ: http://www.repairfaq.org/

If you'd like to email me at

mark_zacharias@labolgcbs.net
Click to expand...
I will email you.

notice the underscore "_" and reverse the domain to read
"sbcglobal.net" I can e-mail you the manual in .RAR chunks for
reassembly on your end.
Please specify the size of attachments you can take, 8 meg or whatever.

Does it go back to standby and blink the power LED or not even respond
to pressing the power standby button?
Click to expand...
Only the main power (hard) switch has an effect - to turn on the
Standby and Lock LEDs.

There is no response to any other buttons.

The power transformer never gets voltage, even for an instant.

There could be a "secret decoder ring" reset procedure to unlock it
after a protect mode has been triggered. This is increasingly common.
Click to expand...
We have tried the STEREO and DIRECT buttons at the same time while
turning on power - no effect.

Thanks!

--
sam | Sci.Electronics.Repair FAQ: http://www.repairfaq.org/
Repair | Main Table of Contents: http://www.repairfaq.org/REPAIR/
+Lasers | Sam's Laser FAQ: http://www.repairfaq.org/sam/lasersam.htm
| Mirror Sites: http://www.repairfaq.org/REPAIR/F_mirror.html

Important: Anything sent to the email address in the message header above is
ignored unless my full name AND either lasers or electronics is included in the
subject line. Or, you can contact me via the Feedback Form in the FAQs.
 
On 2010-08-25 22:58:10 +0200, sam@repairfaq.org (Samuel M. Goldwasser) said:

jeanyves <no-pub-for-jypochez@free.fr> writes:

On 2010-08-25 18:02:20 +0200, sam@repairfaq.org (Samuel M. Goldwasser) said:

This receiver worked perfectly :) until today. Pushing main power button
(a hard switch) results in the Standby and Lock LEDs turning on and nothing
else. No controls have any effect. No response from remote.
Main power transformer never receives any power, two fuses on
mainboard test good.

Any suggestions or service manual/schematics appreciated.
Thanks!

hi,
for me it was one of the main npn transistor 2SD2560 or equivalent
that was burned
and also the two 0.22 ohms/ 2W resistor near that transistor

the main units of denon amplifiers are often almost the same
you can get a 2105 or 2106 schematic easyly on the net.

hope this helps

This was for symptoms similar to mine?

Thanks!
Click to expand...
hi,
yes the symptoms where completely similar (almost)

I bought a 2105 denon on second hand
it worked but I found the central voice not working
I opened it , and found components not soldered on the central voice !!!!
so I resoldered them, and I got the red led and power down...
after desoldering, examining, I found the transistor and 2 resistor bad
replaced them, and everything ok now.

afterwards, I found the schematics of some denon amplifiers on the net
and found all the main units very similar in all the schematics
and also found a lot of same broken units for sale on ebay ...

hope this helps

--
-
Jean-Yves
 
jeanyves <no-pub-for-jypochez@free.fr> writes:

On 2010-08-25 22:58:10 +0200, sam@repairfaq.org (Samuel M. Goldwasser) said:

jeanyves <no-pub-for-jypochez@free.fr> writes:

On 2010-08-25 18:02:20 +0200, sam@repairfaq.org (Samuel M. Goldwasser) said:

This receiver worked perfectly :) until today. Pushing main power button
(a hard switch) results in the Standby and Lock LEDs turning on and nothing
else. No controls have any effect. No response from remote.
Main power transformer never receives any power, two fuses on
mainboard test good.

Any suggestions or service manual/schematics appreciated.
Thanks!

hi,
for me it was one of the main npn transistor 2SD2560 or equivalent
that was burned
and also the two 0.22 ohms/ 2W resistor near that transistor
the main units of denon amplifiers are often almost the same
you can get a 2105 or 2106 schematic easyly on the net.
hope this helps
This was for symptoms similar to mine?
Thanks!

hi,
yes the symptoms where completely similar (almost)

I bought a 2105 denon on second hand
it worked but I found the central voice not working
I opened it , and found components not soldered on the central voice !!!!
so I resoldered them, and I got the red led and power down...
after desoldering, examining, I found the transistor and 2 resistor bad
replaced them, and everything ok now.

afterwards, I found the schematics of some denon amplifiers on the net
and found all the main units very similar in all the schematics
and also found a lot of same broken units for sale on ebay ...

hope this helps
Click to expand...
Interesting.... Mark Z found the service manual so that at least should help.

I should note though that this unit never attempts to power up at all - only
the Standby and Lock LEDs come on. There is never any voltage to the power
transformer, not even for an instant. No clicking relay, no response
from the remote. No response to the reset (STEREO and DIRECT pressed while
turning on power).

Thanks!

--
sam | Sci.Electronics.Repair FAQ: http://www.repairfaq.org/
Repair | Main Table of Contents: http://www.repairfaq.org/REPAIR/
+Lasers | Sam's Laser FAQ: http://www.repairfaq.org/sam/lasersam.htm
| Mirror Sites: http://www.repairfaq.org/REPAIR/F_mirror.html

Important: Anything sent to the email address in the message header above is
ignored unless my full name AND either lasers or electronics is included in the
subject line. Or, you can contact me via the Feedback Form in the FAQs.
 
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