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Old 6th July 2009, 02:05 PM   #1
cchean is offline cchean  United States
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Default Problem with Sony TA-E86b preamp

Hi,

I have a Sony TA-E86 preamp that has a little problem (I hope).

When using any of the line inputs, there's sound on the left channel only. There's just hum in the right channel. When I switch the mono?stereo selector to MONO, sound comes out from both speakers. When I use the tape input, with the SOURCE/TAPE switch switched to TAPE, it is normal, both in mono or stereo. Any advice will be appreciated. Thanks.
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Old 6th July 2009, 04:03 PM   #2
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Old 7th July 2009, 08:39 AM   #3
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Pease huming in one of the speakers is a sign that there is no signal to the input of that channel........ trubleshoot that channel by back tracing it.
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Old 7th July 2009, 03:03 PM   #4
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Default Re: Problem with Sony TA-E86b preamp

Quote:
Originally posted by cchean
Hi,

I have a Sony TA-E86 preamp that has a little problem (I hope).

When using any of the line inputs, there's sound on the left channel only. There's just hum in the right channel. When I switch the mono?stereo selector to MONO, sound comes out from both speakers. When I use the tape input, with the SOURCE/TAPE switch switched to TAPE, it is normal, both in mono or stereo. Any advice will be appreciated. Thanks.

Do you have a schematic?

Jan Didden
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Old 21st April 2010, 05:14 PM   #5
mb-de is offline mb-de  Germany
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Default Have a close look at the source selector switch...

I have two of these units.

If I were in your shoes, I'd have a close look to the source selector switch.

Cleaning or repairing it may be at order - it gave me grief (dropping/muting out channels randomly) in both units, after they had been sitting in the shelf unused for some time. In my case, cleaning did the job.

Best regards,

Micha
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Old 2nd September 2013, 09:18 PM   #6
rwwear is offline rwwear  United States
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Default Problem with Sony TA-E86b preamp

"Originally posted by cchean
Hi,

I have a Sony TA-E86 preamp that has a little problem (I hope).

When using any of the line inputs, there's sound on the left channel only. There's just hum in the right channel. When I switch the mono?stereo selector to MONO, sound comes out from both speakers. When I use the tape input, with the SOURCE/TAPE switch switched to TAPE, it is normal, both in mono or stereo. Any advice will be appreciated. Thanks. "

Did you ever find the problem with your preamp? Mine is doing exactly the same.

Robt.
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