Problem with Sony TA-E86b preamp

cchean · 6th July 2009, 02:05 PM

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.

Cal Weldon · 6th July 2009, 04:03 PM

Moved to solid state.

Karakacha · 7th July 2009, 08:39 AM

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.

janneman · 7th July 2009, 03:03 PM

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

mb-de · 21st April 2010, 05:14 PM

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
===

6th July 2009, 02:05 PM	#1
cchean diyAudio Member Join Date: Dec 2008	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.

6th July 2009, 04:03 PM	#2
Cal Weldon Speakerholic diyAudio Moderator Join Date: Jan 2004 Location: British Columbia	Moved to solid state. __________________ Next stop: Margaritaville Some of Cal's stuff \| Cal Weldon Consulting

21st April 2010, 05:14 PM	#5
mb-de diyAudio Member Join Date: Dec 2007	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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7th July 2009, 08:39 AM	#3
Karakacha diyAudio Member Join Date: Sep 2005	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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