Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems.

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Default Sony STR-DE975 right channel is out

Title explains my problem. Had the receiver for some years. Worked
fine initially. Then noticed when volume was turned up beyond 38 or so
the right channel would go out or nearly go out(difficult to tell).
Turn back down and it would come back. Now the right channel does not
work at all. Happened over course of a year or so, the best I can
remember. Sorry to be so vague. Of course, I should have got on this
sooner, but **** happens. So now I am looking to fix the problem. I
haven't brought it to someone to get checked out. Is there anything I
can do myself? I am not a pro but am willing to dig into unit if there
is an easy fix. I have not opened the unit. Unfortunately the unit is
in a spot where I can not easily got to it(and many wires to unplug and
then plug back in) and just lived with the channel being out becuase it
didn't bother me and I am sometimes lazy. But it bothers me enough now
that I want it fixed. Tried other speakers that I know work and
switched right and left wires so I know it is definately the right
channel. If there is something else I can add to help diagnose, please
let me know. I will offer what I can. Thanks anyone who can offer
advice

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Default Sony STR-DE975 right channel is out


"klimbingking" wrote in message
oups.com...

Title explains my problem. Had the receiver for some years. Worked
fine initially. Then noticed when volume was turned up beyond 38 or so
the right channel would go out or nearly go out(difficult to tell).
Turn back down and it would come back.


I'd start with the volume control itself.


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Default Sony STR-DE975 right channel is out

klimbingking wrote:
Title explains my problem. Had the receiver for some years. Worked
fine initially. Then noticed when volume was turned up beyond 38 or
so the right channel would go out or nearly go out(difficult to tell).
Turn back down and it would come back. Now the right channel does not
work at all. Happened over course of a year or so, the best I can
remember. Sorry to be so vague. Of course, I should have got on this
sooner, but **** happens. So now I am looking to fix the problem. I
haven't brought it to someone to get checked out. Is there anything I
can do myself? I am not a pro but am willing to dig into unit if
there is an easy fix. I have not opened the unit. Unfortunately the
unit is in a spot where I can not easily got to it(and many wires to
unplug and then plug back in) and just lived with the channel being
out becuase it didn't bother me and I am sometimes lazy. But it
bothers me enough now that I want it fixed. Tried other speakers
that I know work and switched right and left wires so I know it is
definately the right channel. If there is something else I can add
to help diagnose, please let me know. I will offer what I can.
Thanks anyone who can offer advice


Problem with speaker wire, bad relay contact(s). bad solder at the speaker
terminal, or at the driver IC.

Who knows? Probably only the speaker wire would be one that you could fix
yourself. Do inspect them and correct any loose wires or strands crossing
over, etc.

Mark Z.


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Default Sony STR-DE975 right channel is out


"Mark D. Zacharias" wrote in message
t...
klimbingking wrote:
Title explains my problem. Had the receiver for some years. Worked
fine initially. Then noticed when volume was turned up beyond 38 or
so the right channel would go out or nearly go out(difficult to tell).
Turn back down and it would come back. Now the right channel does not
work at all. Happened over course of a year or so, the best I can
remember. Sorry to be so vague. Of course, I should have got on this
sooner, but **** happens. So now I am looking to fix the problem. I
haven't brought it to someone to get checked out. Is there anything I
can do myself? I am not a pro but am willing to dig into unit if
there is an easy fix. I have not opened the unit. Unfortunately the
unit is in a spot where I can not easily got to it(and many wires to
unplug and then plug back in) and just lived with the channel being
out becuase it didn't bother me and I am sometimes lazy. But it
bothers me enough now that I want it fixed. Tried other speakers
that I know work and switched right and left wires so I know it is
definately the right channel. If there is something else I can add
to help diagnose, please let me know. I will offer what I can.
Thanks anyone who can offer advice


Problem with speaker wire, bad relay contact(s). bad solder at the speaker
terminal, or at the driver IC.

Who knows? Probably only the speaker wire would be one that you could fix
yourself. Do inspect them and correct any loose wires or strands crossing
over, etc.

Mark Z.

Very common to get bad joints on output ICs on whole STR-DE series of amps.
That would be the first place I would look.

Arfa


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