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Posted on Sep 18, 2010
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I have one Panasonic Audio System Model SA-EH700. Normally when the power is turned on at the wall outlet (220/230V AC), the system power indicator lights up and the system comes to standby mode. Now the indicator is not turned on and the system is not working. I checked the wires and the fuse inside. These are all OK and the power is reaching inside the system. I checked the cables (blue and brown) coming to the big Transformer, it is giving continuity. One thing I noticed: At the connector (white) on the big board where these wires are connected, when I touched with a line tester, the tester indicator lights up on one pin (out of 2), but on the other end of the wire (where it is soldered to the boards), the line tester indicator does not light up. Would you please help me solve the problem.

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Enamul Karim

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  • Posted on Jun 09, 2020
Enamul Karim
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I have one SA - EH700 which is 20 Years Old. It used to work fine but last time I've opened up the main amp. The control board was malfuntioning for those old switches. But during soldering out the bad switches , I accidently broke a 6.3v 100?F capacitor. I replaced the capacitor with same rating but my amp goes to fm mode after starting and the Mixer Tuner "SA - EH750" don't power up or sometime it powers up with wrong light patterns. (System Crash Type). I don't know what to do. Can someone help me out please?
I have one Panasonic Audio - 6_9_2020_7_26_49_pm.jpg

eddgabb

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  • Posted on Apr 13, 2020
eddgabb
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Hi there i have one too sa-eh700 the probem is no audio output but at the headset output there is sound any help???

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5 Related Answers

Anonymous

  • 3130 Answers
  • Posted on Jun 18, 2006

SOURCE: No Power

I mwas gonna suggest that you need the speakers attached but you stated later that it did the same thing with the speakers attached. The unit switching off after it checks its self is NOT a normal thing. TAKE IT BACK BEFORE ITS TOO LATE!! GOOD lUCK

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Anonymous

  • 1512 Answers
  • Posted on Feb 18, 2008

SOURCE: unit wont turn on

.Hi jepenny

The board you are looking at is the standby cct and power switching PCB. It sounds like that is working, so you have probably lost power to the transformer primary or the transformer is open circuit. Check for blown fuses and replace with exact same type and rating.

Be sure to unplug at the wall before touching any internals!!

If you can find no blown fuses, the power transformer may have failed. Good luck, get back to me here is you need any more advice. Thanks for using "FixYa"

regards
Graeme

Anonymous

  • 198 Answers
  • Posted on Feb 20, 2008

SOURCE: lcd montior failure

standby light comes on then cuts out. i removed the board that connects power and noticed charring underneath a heat sink with a 5 pin connector to the board. have tested with a circuit tester and get nothing from the pins. can i get a replacement or would you advise a new board

petraman7

Scott Frye

  • 1175 Answers
  • Posted on Mar 12, 2008

SOURCE: Technics SA-DA10 Receiver-no sound

Most of these problems are rooted in a failed power amp module.
I'm working on an older technics unit but with the same troubles.

petraman7

Scott Frye

  • 1175 Answers
  • Posted on Mar 17, 2008

SOURCE: KRF-5030D i stand by mode

Does it go into standby when it's in another mode like : Cd or Video 1 or tape?

When you state that you checked the power amp IC's , how so did you do this?

Thanks n' let me know.

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