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Yamaha C4 preamp fault. Hum. Phono switches.
Have done a lot of work on this preamp and am starting a fresh thread because several faulty components have already been replaced or repaired and am hoping it may now be much easier to isolate and identify the problem. The issue: Hum is present on all inputs. -Playing vinyl on Phono 1 and 2...- Hifibythekg
- Thread
- earth ground hum hum noise preamp noise preamp yamaha yamaha c-4
- Replies: 116
- Forum: Yamaha
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Ground hum, Yamaha C4
Have nearly tracked down the source of a constant loud hum. Think it’s the Phono MC input.. So, am wondering what should I especially check in the area of the Phono MC RCA inputs and pcb? Some background: Inserting a shorting plug into the MC Phono inputs has a modest effect on the volume...- Hifibythekg
- Thread
- earth ground hum ground issue yamaha yamaha c-4
- Replies: 36
- Forum: Yamaha
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Thorens TD160S MkV - Speakers are picking up radio signals!
Hi all, I'm looking for some advice from Thorens owners. I've just bought a nice TD160S MkV on eBay and fortunately it has arrived in one piece. I've not owned a Thorens before. It has a Grace 707 tonearm and the RCA leads are also Grace. After having spent a few hours putting some things...- oztayls
- Thread
- 160s bad rca earth ground connection hum td160s thorens thorens td160s mkv
- Replies: 19
- Forum: Turntables
