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Sherwood powered SP-210W subwoofer stopped powering-on. Are replacement parts available?

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Same problem that I'm having with my sub

Posted on Apr 13, 2011

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When power is turned on, standby light comes on normally, but in any playing mode, the receiver switches off and the standby light flashes.


It looks like this is a common problem with a lot of the Sherwood Receivers. I've had the same problem with my R-125RDS for a while now. Finally hit on solution today by replacing a power transistor. The transistor in question is not on the power amp board but instead screwed to the chassis and wired to the mainboard. I believe it is part of the output short protection circuit. In my case the component was a 2SD2059 (silicon NPN 100V,5A) replaced by equivalent 2SD1407. The transistor seems to run pretty warm so I guess this is why they ultimately fail after a few years.

Sep 17, 2011 | Sherwood RX-5502 Receiver

4 Answers

Sherwood RX-4105 Amp won't power on.


HI,

You will have to check the fuse.There probably is a fuse next to where the power cord goes into it. It will look like a little round black cap. It may be necessary to push on it and twist it in order to get it out. It will be marked on the case with a number followed by the letter "A", that being the fuse rating in amperes.

Sep 30, 2008 | Sherwood RX-4105 Receiver

1 Answer

I would like to connect my powered subwoofer (Atlantic Technology model 212 SB) to my Sherwood RX5502 receiver. Unfortunately, the receiver has no subwoofer outputs, only speaker outputs, and the...


Cables between sources and compatible units rarely need to be physically modified.

Register and download the manuals for free at retrevo.com

http://www.retrevo.com/support/Sherwood-RX-5502-Receivers-manual/id/3124dj384/t/2/

http://www.retrevo.com/support/Atlantic-Technology-212-SB-Subwoofers-manual/id/866dj197/t/2/

Splicing headphone outputs designed for nominal 8-ohm impedance speakers to a 47K-ohm (typical) RCA load is not a good idea but it might work on the Sherwood because this receiver does not automatically silence your other speakers when the headphone jack is installed.

There is NO other volume-controlled output to choose. Try it.

Mar 25, 2011 | Sherwood RX-5502 Receiver

1 Answer

Can I hook the reciever to mm bose subwoofer and 5


if bose unit has built in amplifier .Then your sherwood would have to have a variable RCA output jacks in order to work with sub.Then bose audio input RCA cable would connect there.If bose unit does not have built in amp .Then you would connect sherwood left/right speaker outputs into bose left/right inputs .Then other bose speakers will connect to bose unit

Jul 30, 2009 | Sherwood RX-4105 Receiver

1 Answer

Subwoofer stops working after about an hour's use. Authorized repair technician could find nothing wrong.


In case of a transistor which is faulty, could short the power supply in circuitry, and this happens after the transistor gets heated up. So you might wanna inspect the transistors on board to replace if found faulty.

--Sandy

May 30, 2009 | Audio Players & Recorders

1 Answer

Sherwood rd7103 rec.


no listing for Sherwood receiver. must do the remote "search" function. here is how:
  1. Turn on your TV.
  2. On the remote control, press TV once.
  3. Then press and hold SETUP until the TV key blinks twice, then release the SETUP key.
  4. Using the number pad, enter 9-9-1. The TV key will blink twice.
  5. Aim the remote control at the TV and slowly alternate between pressing Power and TV. Stop when the TV turns off after pressing the POWER key. This means that a working code has been found.
  6. Press the SETUP key once to lock in the code. The TV key will blink twice.
Hope that helps!

Feb 28, 2009 | Sherwood RX-4103 Receiver

3 Answers

Sherwood RD7502


Hi - You can download the manual by clicking the link underlined in blue below:

RD-6108

Your sub woofer needs to have it's own power amp i.e. a "powered" sub woofer:

8a2280a.jpg

Assuming your sub woofer is powered & connect as shown then check the following setting:

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Let us know how you get on.

Please take a moment to rate this solution & let us know if the information given was useful to you - Good Luck!

Informatica

Sep 06, 2008 | Sherwood RD-6108 Receiver

1 Answer

Sherwood AVR 525 Receiver


If it is just a 2 pin "figure of 8" type plug(shaver plug) they are available most any electronics hobby shop, or an appliance retailer. If you have trouble identifying the socket on the amp... get back to me here. Good luck:)

regards
Graeme

Feb 15, 2008 | Sherwood AVR-525 Receiver

1 Answer

Insignia NS-R2000 receiver


Check the impedance ratings of your speakers. Sherwood, the actual manufacturer of the NS-R2000 receiver, suggests that you use speakers with an eight ohm impedance if you have only one pair attached. If you have two pairs of speakers attached, the impedance rating of each pair should be sixteen ohms.

This is because Sherwood wired the receiver such that an additional pair of speakers is placed in a parallel circuit to the first set. When this is done, the impedance (resistance) of the load seen by the amplifier drops. As resistance drops, you get closer to a short circuit (no appreciable resistance).

Many other receivers wire the speakers in series, which causes the impedance to go up.

Personal experience seems to suggest that the amplifier is OK with a four ohm load on it. It does run warmer with a four ohm load, which is what you'd expect. It's when you have multiple sets of four ohm rated speakers that you will get into trouble, as this means the receiver only sees a two ohm load. This will cause overheating and shutdown.

At this point the power transistors in the amplifier may have been damaged. It may require repair. Fortunately, replacement parts are readily available (though not from Sherwood or Insignia). If it continues to shut down, stop using it. You could end up burning out your speakers.

Jan 09, 2008 | Yamaha RX-V2400 Receiver

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