[TechAssist] Re: Sony STR-DE405
- From: peggs <peggs@xxxxxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx, <techassist@xxxxxxxxxxxxx>
- Date: Tue, 28 Jan 2003 10:39:44 -0600
tighten chassis ground screws
Peggs
At 11:25 AM 1/28/03 -0500, David Lessard wrote:
>
>Gentlemen,
>
>I finally got around to looking at this unit again. It will power-up, but
>most of the time it goes right in to "PROTECTION" mode, occasionally it will
>work for 20 - 30 seconds, then "PROTECTION" mode. When it does work, I
>notice the audio output flucuates a bit, sort of like a low frequency
>fluttering sound (+50 & -50 are stable during this). Are there any common
>problems with this unit? What causes protection to activate? I know nothing
>about this particular unit, any help would be greatly appreciated. Would any
>member have a schematic please? Thanks.
>
>David Lessard
>mrfixit@xxxxxxxxxxx
>
>-----Original Message-----
>From: techassist-bounce@xxxxxxxxxxxxx
>[mailto:techassist-bounce@xxxxxxxxxxxxx]On Behalf Of LeRoy Westlund
>Sent: Sunday, December 29, 2002 4:46 PM
>To: techassist@xxxxxxxxxxxxx
>Subject: [TechAssist] Re: Sony STR-DE405
>
>David,
>What is the problem with this unit ?
>If your outputs seem to be OK, check for bad solder on R806.
>should have +42.8 volts on both sides of R806. It provides the +24 volt
>source for the speaker relay.
>
>LLW
>
>LeRoy Westlund
>Westlund TV & Electronics " It's such a pretty world
>93 North Main today !....
>Centerfield, UT 84622-0087 Look at the Sunshine. "
>Ph./Fax 435-528-3822 :-)
>mailto:LLW@xxxxxxxxxx
>
>-----Original Message-----
>From: David Lessard <mrfixit@xxxxxxxxxxx>
>To: techassist@xxxxxxxxxxxxx <techassist@xxxxxxxxxxxxx>
>Date: Sunday, December 29, 2002 1:04 PM
>Subject: [TechAssist] Re: Sony STR-DE405
>>
>>Yeah, got his reply. I guess the measurement to ground on this pin is
>>normal, sort of, still wondering why am I measuring 10 ohms to anaglog
>>ground here if this pin is supposed to be connected to analog ground.
>>Something to think about. Regardless, I'm going to fire the beast up, I'll
>>let you know.
>>
>>-----Original Message-----
>>From: techassist-bounce@xxxxxxxxxxxxx
>>[mailto:techassist-bounce@xxxxxxxxxxxxx]On Behalf Of teltek2
>>Sent: Sunday, December 29, 2002 2:56 PM
>>To: techassist@xxxxxxxxxxxxx
>>Subject: [TechAssist] Re: Sony STR-DE405
>>
>>David;
>>Forgot a Panday...he's your Sony guru. Helped me out a couple of times.
>>
>>-Ed-
>>Tel-Tek Electronics
>>Ontario-Canada
>>
>>teltek2@xxxxxxxxxxxx
>>----- Original Message -----
>>From: "D Panday" <dpanday@xxxxxxxxxxx>
>>To: <techassist@xxxxxxxxxxxxx>
>>Sent: Sunday, December 29, 2002 2:45 PM
>>Subject: [TechAssist] Re: Sony STR-DE405
>>>
>>> David,
>>>
>>> IC300 is the Surround Processor with Pin1 Vss (AGnd).
>>> Panday
>>>
>>> >From: "David Lessard" <mrfixit@xxxxxxxxxxx>
>>> >Reply-To: techassist@xxxxxxxxxxxxx
>>> >To: <techassist@xxxxxxxxxxxxx>
>>> >Subject: [TechAssist] Sony STR-DE405
>>> >Date: Sat, 28 Dec 2002 17:29:54 -0500
>>> >
>>> >Techs,
>>> >
>>> >Does anyone know the function of IC300 (LV1011)? I'm reading 10 ohms
>>> >between ground and pin #1, not sure if this is normal. Thanks again
>>> >gang. Happy New Years.
>>> >
>>> >"Share what you know, Learn what you don't"
>>> >
>>> >David Lessard
>>> >Alexandria Electronics
>>> >50 Harrison Street
>>> >Alexandria, Ontario
>>> >K0C-1A0
>>> >mrfixit@xxxxxxxxxxx
>>> >
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Peggs' Electronics
1519 West 2nd Street
Owensboro,KY 42301
270-926-4968
fax 270-686-7399
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