[TechAssist] Re: denon amp help please
- From: "majorthom@xxxxxxxxxxxxx" <majorthom@xxxxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Wed, 17 Dec 2003 13:24:09 -0800 (PST)
DC offset &idle current are two much different parameters:run the AC way down
to approx. 30VAC.If you need to short the turn-on relay,then do so and then
check voltages by former knowledge or mirror the good channel.
Glenn Larkman <mail@xxxxxxxxxxxxx> wrote:Roy,
do you have dc voltage on the emitters of the output transistors?
If so you still need to keep changing parts.
When I have a blown channel I usually just change all the outputs,drivers
and small signal transistors. The I check around looking for open resistors,
bad caps etc.
Dont forget to check your emitter resistors.
Glenn Larkman
Audiotech
256 Nth Hwy 101
ENCINITAS CA 92024
760 944 9048
FAX 944 0345
mail to"mail@xxxxxxxxxxxxx"
"www.audiotech.net"
----- Original Message -----
From:
To:
Sent: Wednesday, December 17, 2003 8:16 AM
Subject: [TechAssist] denon amp help please
Hi
I have a Denon AVR-900
Came in in the protect mode.
Found and replaced the following shorted transistors with origional part
numbers
TR322 2SA1633
TR316 2SD667
TR314 2SC1815
Unit still gos into protect but doed no damage to the unit.
I do not have a drawing so if someone has a history on this unit or a
drawing
they could email me that would be great.
Thanks in advance
Roy
Roy Adams
Bonded TV Service
5158 W Forest Home Ave
Milwaukee, WI 53219
414-541-9111
www.Bondedtv.com
we have thousands of tubes on the site
Webhosting from only 4.95 a month at Bondedhost.com
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