Question about Pioneer Antenna Am Sx-939 Sx-838 Sx-737 Sx-636 Sx-535 Sx-434 Receiver Screws

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Pioneer sx 737 no signal from tuner - Pioneer Antenna Am Sx-939 Sx-838 Sx-737 Sx-636 Sx-535 Sx-434 Receiver Screws

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4 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

robotek
  • 1512 Answers

SOURCE: I just bought an old

Any luck with checking antenna connections? I have a service manual if you need it. Tuner section in this old girl predates the LM7001. Uses ha1137-38 chips, bit more complex to repair.

Posted on Jun 09, 2008

tech48
  • 624 Answers

SOURCE: Pioneer sx-205 gives a overload

Does it play normal on any sources, or do you only have the tuner and CD for available sources?

There are many different things that can cause this type of problem.

It could be bad solder connections on in the amplifier circuit or power supply, it could be a bad speaker or a bad output channel inside the receiver if this happens only when it gets turned up loud.

The overload warning happens when the amplifier circuit has excessive current or DC voltage on the outputs. Unfortunately the only way to determain if it is the speakers is to change them with other known good speakers and see if it still happens. But before buying any speakers you need to have the receiver ruled out as the source of the problem.

It can also go into overload if you have the wrong type of speakers connected, or too many speakers connected. Each speaker jack should only have one speaker connected toit. If you are using for example, 4 speakers connected to the "A" speaker jacks meant for just 2 speakers, it will create a load to the amplifier that the amplifier is not rated for.
Look on the back of the receiver and it will have listed the proper impeadance for your receiver. Most will say:

8 ohms or more "A" or "B" speakers
16 ohms "A" and "B" speakers

That means you must use 8 ohm or higher ohm rated speakers if you are using only speakers"A" or only speakers "B", but can not use 8 ohm speakers if you are using speakers "A" and "B" at the same time. Then they must be 16 ohm speakers.

Two 8 ohm speakers in one speaker jack is a 4 ohm load, that is why you can not use more than 1 speaker per speaker jack.

I hope you found this information useful, and if I can be more help just let me know.

Dave

Posted on Jun 28, 2008

Santastinker
  • 4 Answers

SOURCE: Pioneer SX-737

You might try to get some information from: www.servicemanual.net. Somebody will need it if you want it worked on. If it is real heavy (40lb.s +) it may well be from the 70's. Mostly good units. I wouldn't give you $0.10 for their new stuff.

Posted on Nov 05, 2008

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1 Answer

According to manual there is pre/amp on Pioneer sx 20 what connections do I use to connect graphic equaliser


Yes, the SX20 includes a preamp including a phono stage. (nice!) There is already equalization in the SX20 available via the bass/treble controls. To hoop up an external graphic equalizer, you should be able to connect it to the 'Recorder' IN/OUT and then select the tape monitor input to hear the equalized signal.

http://www.hifimarket.cz/files/img/zbozi/pioneer/_640x480/sx-20-4.jpg

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Pioneer SX-2300 powers up, but no sound.


Does the output relay click about 5 sec. after powering on? If it does check if the tape2/tape monitor is on. Check speakers and wiring. Try headphones.

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If no relay then it probably needs output transistors and a few resistors.

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I've been recording LPs for over a year now.

I've got the turntable outputs plugged into the phono inputs on the receiver amp.

I'm taking the Y cord (pair of RCA connectors at one end, mini plug at other) from the Tape Record (these are what you'd use to send a signal to the tape deck for recording) on the amp to the "line in" on the sound card. You may want to look up the specs on your sound card to make certain that you've got the plug in the correct socket. There may be a "line in" and a "microphone" socket. Use the "line in"

What recording software are you using? Audacity is free and is ok. I'm using Goldwave (costs ~$50) and highly recommend it. MUCH better than any other package I've tried. Just google "goldwave" to find it.

The recording software should have an option for selecting / specifying a source. If you have "microphone" selected and the y cord going into the "line in" socket, yoiu won't get anything.

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I just bought an old vintage pioneer sx 737 receiver and cannot get NO fm reception, and only 2 or 3 on am....HELP!!!!! I have used antennas as well...Charlie


Even with just a short wire, this model should be receiving a number of stations. Is there an IC inside marked LA7001 or something similar? If so, it is probably defective. This is a common failure. I'll look up your specific model later to confirm.
Dan

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a little bit foolish thing: see if you have both the speaker channels (A and B) down. if you have both down it doesn't work - didn't for me.. and obviously make sure you have the right letter down - same outpout as your boxes

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