Question about Technics SC-EH780 CD Shelf System

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Sc-eh780 When I switch on I get F61 on screen then it switches to standby mode.Thanks,Laurie.

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Measure with your vom meter at spker terminal dc voltge.You have to be fast .If you get any dc voltage at out put change amplifier ic.The voltage may appeare very little before unit goes off therefore you have to be fast ih measuring

Posted on Dec 14, 2007

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3 Answers

Panasonic Dvd stereo system model number SA-VK960 power supply is defective. is it possible to repair?


Your Panasonic SA-VX uses a Switch Mode Power Supply ( SMPS ). Do not ever attempt to fix it yourself unless you are well versed in electronics. ou can damage the system seriously. Seek professional help.

Mar 10, 2011 | Audio Players & Recorders

1 Answer

I CANNOT SWITCH OFF THE EQUIPMENT ,AS SOON AS I GET TO SWITCH OFF THE HI FI IN A FEW SECONDS THE EQUIPMENT SWITCH ON AGAIN AND I CAN SEE THE WORD DEMO ON THE SCREEN


RTFM: Page 13:

"A demonstration of the display is shown if you have not set the
clock. You can reduce the power consumed in standby mode by turning the demonstration off.
While the unit is on:
Press and hold [–DEMO] until “NO DEMO” is
displayed.
Each time you press and hold the button:
NO DEMO (off) DEMO (on)

This is a 24-hour clock.
The example shows how to set the clock for 16:25 (4:25 p.m.).
1 Press [0/I] to turn the unit on.
2
Press [CLOCK/TIMER] to display “CLOCK”.
Each time you press the button:
CLOCK>>PLAY>>REC>>Original display
Within 5 seconds
Press [SET].
3
Press [TUNING (Up or Down)] to set the time.
The time display can be changed in one minute units by tapping
the buttons, and quickly by holding down the buttons.
Press [SET].
The time is set and the original display is restored."


Or under Troubleshooting Page 38:

"The display starts up even after the unit is turned off.

The demonstration feature (–DEMO) is on. Turn it off if it is not required."

If you need the manual go to
http://audio.manualsonline.com
register and get it for free.

Mar 25, 2010 | Technics SC-EH780 CD Shelf System

3 Answers

Panasonic SC-HT995 locked


check the fan, if its dusty clean it then run the player. If it works, your in luck. If the fans are moving and f61 still shows up, the D-amp IC is shortened ( inside you will see IC 5000/IC5200 / IC 5300, these needs to be replaced) its the one by the big cooling fins (behind the rear fan)

Nov 11, 2009 | Panasonic SC-HT995W System

2 Answers

F61 error


The F61 error indicates that the unit is in "protect" mode. This means that an error condition was detected in the amp section and the unit has shutdown. This is usually caused by a defective amp chip. Expect a parts cost in the range of $60-$90.

Dan

Dec 05, 2008 | Panasonic SC-AK17 Shelf System

1 Answer

Technics sa dv280 hard reset


DESOLDER THE REGULATOR AND CHECK IT OUT AGAIN IF IT'S OK THEN REPLACE THAT BIG GREY AMP PART STICK TO THE RADIAROR ON THE BACK

Nov 16, 2008 | Technics SC-EH780 CD Shelf System

1 Answer

I have Panasonic SC-AK750 Mini System and of late it keeps showing F61 on the screen before it switches off. do you know what it is


The F61 indicates protect mode. This means that a problem was detected inside and the unit shuts down to prevent further damage. This is usually the output amp pac or the regulator IC. The amp is attached to the heat sink in the rear of hte unit and should be marked RSNxxx.

Dan

Sep 11, 2008 | Panasonic Audio Players & Recorders

3 Answers

F61 fault


Although the Panasonic Home Theater systems are great when they work properly. If your machine displays the "f61" error message, it's likely to be little more than a paper weight for the average person. The inner workings of the machine are rather complex to disassemble for diagnostics. And can take several hours to check all the components. The best advice I can give you is to sell the machine on e-bay as a broken item. If you offer shipping you can get more money for a complete system (speakers & all).

Jun 15, 2008 | Panasonic SC-HT940 System

1 Answer

F61 problem


DIsconnect sound Amplifier ic (RSN).After removal of the ic if the unit works o.k offcourse without sound than replace ic.If still f61 than sound ic is o.k and check voltege regulators in power supply.You can check dc detect line if it gets activated.
F61 is mainly two resons 1st sound ic or power supply problem in power bord which send signal to system control to shut down the power in order not to damege more.

Dec 13, 2007 | Technics SC-EH780 CD Shelf System

1 Answer

My stereo turns off by itself and the indication F61 appears


1st case dry solder connection in power board and amp bpard ,resolder and unit will be working o.k

Oct 28, 2007 | Technics SC-EH780 CD Shelf System

1 Answer

F61


Hi, I'll quote directly from the service manual Error display - F61 Problem condition - When POWER is switched on, power become off automatically. During normal operation, if DC DET become L, PCNT shall become L and the error display on the left shall be displayed. (IC501) What *I* think that they are trying to say is that the protection circuit will activate if DC appears on the speaker terminals. IC501 the audio output chip may be faulty.

Feb 06, 2006 | Panasonic SC-AK300 CD Shelf System

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