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Sherwood AX-4050R Amp - Inputs

None of the inputs work except for EXT in, but that buzzes loudly and has blown the tweeters on my speakers!!!! sounds like an un-grounded turntable x5 . anyone help?????

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

Gurudristi
  • 98 Answers

SOURCE: Onkyo TX-SR706; Turntable output only from one speaker

Try some troubleshooting to check whether its the turntable or the the receiver.

What happens if you exchange the output cables of the turntable from left to right. Does the problem shift?
Does the sound changes from left to right speaker?

Similarly try on the inputs of the Receiver.. does the problem shift...?
This way you will be able to isolate the problem, whether with the receiver or the turntable....

Let me know, we can trouble shoot it further....

Posted on Mar 08, 2009

  • 4234 Answers

SOURCE: technics turntable plays but no sound with Sherwood receiver

The problem is the fact that the new receiver has no phono input. The phono input has an extra stage of amplification built in. Your receiver is working fine. You need to purchase a phono pre-amp. These run around $20. Connect the turntable to the preamp and the presmp output to any line level input on your new receiver and everything will work as expected.

Dan

Posted on Apr 12, 2009

  • 4234 Answers

SOURCE: Sherwood AX-4050R Amp - faulty RCA inputs

It is rare for the actual input connectors to fail. More likely, either the solder connections need to be re-flowed, or the switching IC is defective. If you can solder, try resoldering the pins of the RCA connectors. Look closely at them and see if the PC board trace is broken. If the resoldering fails to resolve the problem, look for a switching IC with about 28 pins. It may be marked TC9163 or something similar. That will be the audio switching IC. I would change that next.

Dan

Posted on Nov 30, 2009

dunnbiker
  • 8546 Answers

SOURCE: Sherwood RV-4050R compatible with new gear?

The TV is irrelevant.

BD would need HDMI, digital audio or 5.1 analog inputs on the contol receiver. You have none of these.

Posted on Jun 21, 2010

petraman7
  • 1175 Answers

SOURCE: Suddenly after 8 years there is no sound coming

Actually, Denon used a thermal fuse in the primary of the power transformer. Have a tech check the primary winding and see if it's open. if so , have it bypassed

Posted on Aug 19, 2010

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I'm thinking you have an open shield ground on the RCA input side. Connecting speaker inputs possibly restores the ground. Try connecting the high level inputs then disconnect the remote end of the cables (floating the grounds).

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The TV is irrelevant.

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Sherwood AX-4050R Amp - faulty RCA inputs


It is rare for the actual input connectors to fail. More likely, either the solder connections need to be re-flowed, or the switching IC is defective. If you can solder, try resoldering the pins of the RCA connectors. Look closely at them and see if the PC board trace is broken. If the resoldering fails to resolve the problem, look for a switching IC with about 28 pins. It may be marked TC9163 or something similar. That will be the audio switching IC. I would change that next.

Dan

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Dan

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