20 Most Recent Panasonic SA-HE70 Receiver Questions & Answers

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CD function not working on Panasonic SA-HE70 receiver

when you say its not working what do you mean by that? its got no power. the tray wont open. tray trying to open but wont. or just wont play cd. if none of the above could you please give me more info please.
11/9/2016 3:49:51 AM • Panasonic... • Answered on Nov 09, 2016
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Its showing F70 error on display. Only workd on DVD mode, when i turn it on any other mode it just shows F70, switch power off. All fuses are ok, no any visibly damaged components

The fuse is a part of the problem it is for safety measures the problem is in between the power supply regulators, capacitors and power amplifier circuit board. usually a regulator or an output transistor can cause this error. hope this helps. its-showing-f70-error-display-only-hsr1hry0r110iqa53bzttpz3-5-0.jpg
12/9/2015 10:45:02 AM • Panasonic... • Answered on Dec 09, 2015
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F70 problem

Look up "Panasonic F70 error" on Google and you will find plenty of discussion about this problem.

The F70 is a blown fuse error. It looks like you can can the fuse yourself, if so inclined, otherwise send it to a service agent.
9/17/2015 11:19:40 AM • Panasonic... • Answered on Sep 17, 2015
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I have a button that allows bass/treble and balance but only balance works regardless of how many times you press it.

Read Page 13 of your owner's manual http://www.manualslib.com/manual/119549/Panasonic-Sa-He70.html?page=13#manual
6/7/2015 5:03:16 AM • Panasonic... • Answered on Jun 07, 2015
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Speakers

All speakers can be 100 Watts. The Front speakers can use 4-8 ohms. Center and Surround jacks can use 6-8 ohm speakers.
4/20/2014 5:09:18 PM • Panasonic... • Answered on Apr 20, 2014
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Switch off power

Be the first to answer 1/20/2014 9:13:59 PM • Panasonic... • Posted on Jan 20, 2014Be the first to answer
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What does f70 overloads means

Sounds like either an amp problem or a fan problem. Either one can send a F70 code. Check and see if the rear fan is turning freely, it might just be dirty and can't spin easy
9/23/2013 2:50:26 PM • Panasonic... • Answered on Sep 23, 2013
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How do I know if oys a fuse blown

I had the same trouble to reset this machine into factory setting and finally, I found out. Let's do this way.- Leave your remote away as you won't need it- Turn off the the unit to STANDBY mode- Press and hold STRAIGHT button on the unit and press Power button while you are holding it. This will turn on the machine.- Once the machine turns on, press PROGRAM to select the items on LCD display until it shows INIT **** CANCEL- Press STRAIGHT button until it shows INIT **** ALL- Press Power to turn off the machine.- Leave it for 2 sec. then turn on the machine again.Now your unit turns to factory default setting.
9/22/2013 11:24:29 AM • Panasonic... • Answered on Sep 22, 2013
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Sa-he70 optical

Be the first to answer 3/13/2013 3:00:48 AM • Panasonic... • Posted on Mar 13, 2013Be the first to answer
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The receiver makes a fuzzy low volume sound and

I have just repaired one with similar problem.Check solder joints at transistor reg Q1701, Q1702 and resistors R1701, R1702 on digital PCB .
11/10/2011 8:55:05 AM • Panasonic... • Answered on Nov 10, 2011
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I have a panasonic SA-HE70 amplifier and all it

hi,.

First of all remove all the speaker connections from the amplifier. After that power the amplifier and check that it gose Over load ( protection ) show or not . if not, then any of the speakers or its wiring have some problem. If so the reconnect the speakers one by one and switch ON the amplifer and check.find out on wchi speaker it shows lover load.


if the amplifer shows overload even after removing the speakers then you have to check the amplifiers hardware.

Also added the procedure how to check the amplifier satge. You should have a good knowledge in electronics to do the following. Also need testing instuments.


AV receivers shows protect mode , when there is a hardware fault in side it. Its a warning that some thing is wrong.
Normally AV receivers show this when any of the output amplifier have some problem. there are five amplifiers in this AV receiver. This problem occur when the output diver transistors of any of the amplifier become shorted. if the output transistor get shorted this will lead to flow of current through the speakers. To prevent this there is a protection circuit for each channels. One combined output of this protection circuit is connected to the system control. when the any of the output amplifier fails, the protection circuit detects it and switch of the speaker and sent data to the system control. when the system control get this data it will give a warning to the customer through display that PROTECT.
You have to check the amplifier.

For that you need digital multimeter,soledring iron screwdrivers etc

Open the amplifier , then power it on. connect the negative terminal of the multimeter any where in the chase( metal body of the amplifer). then connect the positive terminal to all the output transistors emitter pin one by one . the voltage should be bellow 0.5V. If any of the emitter of the transistor shows voltage more than 0.5V., then that amplifier stage is faulty. Remove the transistors and check it. if it is shot then replace with a new one.
after replacing the transistors do not power up the amplifier directly from the main. You have to put a bulb of 60 watts in serial.
You can do this easily remove the mains fuse. put the bulb in a holder. now you have to wire from the holder. connect one of it to the one end of the fuse holder and the other wire to the other end of the fuse holder. Why using a bulb is, if there is any further problem in the amplifier stage on which the transistors replaced, there is a possibility of the new transistor get damage. if we use a bulb in serial with its mains supply ,when any overload in the amplifier occur the bulb will drop the current, by lighting itself.
After connecting the bulb in serious power on the amplifier. watch the bulb. It should light for one or two second and go dim . if so check the display, is there is protect mode is on or not . if not and come back to normal operation ,then remove the power , remove the bulb insert fuse and check
connect the power and check.
If the bulb shows bright light then there is some component also faulty in the same amplifier. after removing the power you have to check again the amplifier stage of which the transistor is replaced, for any other faulty components

OK
9/19/2011 12:26:10 PM • Panasonic... • Answered on Sep 19, 2011
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Overload displays on the screen

If it say's overload with no speakers connected and the unit on, it needs service. If you need further help, post a comment and I can help you troubleshoot.
9/19/2011 11:47:39 AM • Panasonic... • Answered on Sep 19, 2011
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I have a panasonic sa-he70

Page 16 of the manual has recommendations.

Generally speaking, an amp attempts to protect itself from heat, shorts, overloads and operator exuberance by refusing to turn on or stay on.

Overloads can be from excessive periods of high output or marginally low impedance loading by the speakers; and shorts would be wiring issues or a speaker blowing up.

You should be able to feel if it's hot. WHY is it overheating? Make sure it has sufficient ventilation on all sides and that vent holes are not blocked by dust balls. Ensure the fan (if equipped) is running as designed (some only operate on demand). Clean dust and debris from it.

If the amp comes back on after cooling, you're lucky. They only have so many self-protection cycles in their lives so continuously resetting or cycling their power without addressing the cause can do more harm than good.

If it protects immediately on a cool power up you should disconnect the speaker connections and try it 'naked'. If it comes up then diagnose which lead(s) are shorted. If it does not come up the problem is internal and should be left to an experienced and competent hands-on tech.
7/27/2011 11:52:07 AM • Panasonic... • Answered on Jul 27, 2011
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