Need clue. R speaker static when low volume, fine loud, headphones fine. . . Help?

danielwritesbac · 30th December 2007, 03:40 PM

Hey guys, I'm in need of a clue.
I have a Technics SA-5370 with a slight illness. . .

The right speaker will play static at low volume.
It plays just fine if loud.

When playing only headphones, its super-clean
However, if I turn the speakers on, the right side plays static at low volume or just fine if loud.

I don't know where to start looking for the problem.
Any ideas?

Original Burnedfingers · 30th December 2007, 03:59 PM

Plays static?

Do you mean the volume control when moved you hear a static sound?

danielwritesbac · 30th December 2007, 04:05 PM

Its not the volume control.

When the speakers are switched off, then the headphones can play totally clean.

Original Burnedfingers · 30th December 2007, 04:12 PM

Generally the volume control position when using headphones will be higher than it would be for using speakers because headphones aren't as efficient and the headphone jack on the receiver has a resistive network to lower the level to the phones.

What I was thinking is that the control might be dirty in the lower end and by moving the volume control to a higher position it might very well be in a clean portion of the control what would result in no static.

danielwritesbac · 30th December 2007, 04:29 PM

That's a good thought, but the problem isn't that simple.
This noise sounds like an "un-compressor" or like the amp is having a difficult time getting voltage or getting voltage through something.

Although Technics 5370 was high quality in its day, that was in the year 1976.

Specifically, it seems that the more power coming from the preamp section, going to the amp section, the clearer the signal.

Also, running speakers at low volume involves freakish uncompressor/ decoupler failure / bad contact type noises from the right side speaker.

Opening her up and hunting potentially bad electrocaps, wasn't working out for me, because they're from 1976 and all potentially suspect. So, I need a clue or some tips about the most likely place to start hunting for this specific sort of problem.

30th December 2007, 03:40 PM	#1
danielwritesbac diyAudio Member Join Date: Nov 2007	Need clue. R speaker static when low volume, fine loud, headphones fine. . . Help? Hey guys, I'm in need of a clue. I have a Technics SA-5370 with a slight illness. . . The right speaker will play static at low volume. It plays just fine if loud. When playing only headphones, its super-clean However, if I turn the speakers on, the right side plays static at low volume or just fine if loud. I don't know where to start looking for the problem. Any ideas?

30th December 2007, 04:05 PM	#3
danielwritesbac diyAudio Member Join Date: Nov 2007	Not the volume control Its not the volume control. When the speakers are switched off, then the headphones can play totally clean.

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30th December 2007, 03:59 PM	#2
Original Burnedfingers diyAudio Member Join Date: Nov 2002	Plays static? Do you mean the volume control when moved you hear a static sound?

30th December 2007, 04:12 PM	#4
Original Burnedfingers diyAudio Member Join Date: Nov 2002	Generally the volume control position when using headphones will be higher than it would be for using speakers because headphones aren't as efficient and the headphone jack on the receiver has a resistive network to lower the level to the phones. What I was thinking is that the control might be dirty in the lower end and by moving the volume control to a higher position it might very well be in a clean portion of the control what would result in no static.

30th December 2007, 04:29 PM	#5
danielwritesbac diyAudio Member Join Date: Nov 2007	That's a good thought, but the problem isn't that simple. This noise sounds like an "un-compressor" or like the amp is having a difficult time getting voltage or getting voltage through something. Although Technics 5370 was high quality in its day, that was in the year 1976. Specifically, it seems that the more power coming from the preamp section, going to the amp section, the clearer the signal. Also, running speakers at low volume involves freakish uncompressor/ decoupler failure / bad contact type noises from the right side speaker. Opening her up and hunting potentially bad electrocaps, wasn't working out for me, because they're from 1976 and all potentially suspect. So, I need a clue or some tips about the most likely place to start hunting for this specific sort of problem.

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