Denon AVR-2700 Stuck in Standby

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!

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!

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

On 2010-08-25 18:02:20 +0200, sam_at_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 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.

"David Farber" <farberbear.unspam_at_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.

"Samuel M. Goldwasser" <sam_at_repairfaq.org> wrote in message
news:uaaoawuib.fsf_at_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_at_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.

jeanyves <no-pub-for-jypochez_at_free.fr> writes:

On 2010-08-25 18:02:20 +0200, sam_at_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!

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

jeanyves <no-pub-for-jypochez_at_free.fr> writes:

On 2010-08-25 18:02:20 +0200, sam_at_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