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Post by Horsy on May 7, 2019 19:01:19 GMT
Hello!
Does anybody have knowledge about a little noisy phono-input?
Any failed component or soldering?
All the best.
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Post by PinkFloyd on May 7, 2019 19:19:55 GMT
Hello! Does anybody have knowledge about a little noisy phono-input? Any failed component or soldering? All the best. Hi Horsy, What type of noise is it? Is it in both channels or just one? Best regards, Mike. |
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nando
Been here a while! 
The Frying Dutchman
Always look on the bright side of life
Posts: 393 
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Post by nando on May 8, 2019 19:06:56 GMT
I have a Nuvista pre but havn't used the phono input. My nuvista is in pieces at the moment so I can't test it for you. Sorry.
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Post by Horsy on May 9, 2019 14:14:31 GMT
Hello! Does anybody have knowledge about a little noisy phono-input? Any failed component or soldering? All the best. Hi Horsy, What type of noise is it? Is it in both channels or just one? Best regards, Mike. In both channels and a normal (backgroundlike)noise but in a higher level, like fullpull on volume without music. /Pierre |
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Post by PinkFloyd on May 9, 2019 19:40:09 GMT
That sounds like one or more of the 6CW4 nuvista valves / tubes have gone bad. You used to be able buy them for PENNIES (surplus stock) but they are crazy expensive these days (between £25 - £35 each) I would replace all four while I was at it.
All the best,
Mike.
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nando
Been here a while!
The Frying Dutchman
Always look on the bright side of life
Posts: 393
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Post by nando on May 10, 2019 12:42:53 GMT
But if only the tubes are bad then the noise would be audioble on all inputs, no?
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Post by Horsy on May 11, 2019 20:15:15 GMT
That sounds like one or more of the 6CW4 nuvista valves / tubes have gone bad. You used to be able buy them for PENNIES (surplus stock) but they are crazy expensive these days (between £25 - £35 each) I would replace all four while I was at it. All the best, Mike. But the tubes aren't in the phonosection............? (I have a set of new tubes) Pierre |
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Post by Horsy on May 14, 2019 15:13:58 GMT
Any? (cause I must sell but want to sell good stuff)
Pierre
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nando
Been here a while!
The Frying Dutchman
Always look on the bright side of life
Posts: 393
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Post by nando on May 15, 2019 17:42:15 GMT
Any? (cause I must sell but want to sell good stuff) Pierre We want to help but need more info. If you want to know about the soldering you should open up the nu vista pre. It is a bit of a job to get the pcb out of the casing. Then you could check the soldering or other components that are visually faulty. |
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Post by Horsy on May 19, 2019 14:12:13 GMT
Soldering and components looks all good. I've done a complete teardown and did the brush'n'clean in switches. That solved everything except the "pinknoise"  Maybe I should re-solder the riaa-parts to see(hear) |
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nando
Been here a while!
The Frying Dutchman
Always look on the bright side of life
Posts: 393
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Post by nando on May 19, 2019 21:04:13 GMT
Resolder or replace while you’re at it.
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