Question about Panasonic Home Theater System System

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Model number Panasonic ht-940

Unit gives error message and shuts down. Only a yr old. In the repair shop now. Guys says that it is the power supply but that since it is so new e cannot get replacement parts.

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  • Seattleray Apr 10, 2008

    unit does give an f-61 error code. The repair guy said that this was probably caused by a power surge. I am sure that he is not going to be able to resolve this. The guy told me that he would try one more time to get the parts and that he would call me in a couple of days one way or another. I did initially take it to an authorized dealer but they refused to take it since it was two days out of warranty. They gave me this guys number but it looked more like a junk shop than a repair shop. I am just concerned that the cost of repair is going to be more than it is worth since there are tons on Craigslist and eBay.

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  • Master
  • 4,234 Answers

This is not likely the power supply. Second of all if it is that new, it should have gone to an authorized service center. The power supply is not a separate "part" that can be ordered. This needs to be properly diagnosed. What is the exact symptom? If it is the F61 error it is probably the output amp pac. Please update this with more details.
Thanks,
Dan

Posted on Apr 09, 2008

  • ABRsvcs Apr 10, 2008

    The parts are available for these. I have repaired a number of them. Something sounds fishy as well. I have been an authorized servicer for Panasonic. We NEVER refused any repair. We would attempt to get a warranty repair with something that close. Is there any way I can contact you off line about this. This needs to be corrected.

    Dan

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2 Answers

After turned on the power, the unit shuts down immidietly


There is a problem in either the power supply or amplifier output stages. The unit is programmed to shut down in such an event to protect other circuitry.

Using a schematic see if you can isolate the power going to the output stages. If unit stays on then the anomaly is in power amp stages. If it still shuts off problemo is in power supply - check diodes and capacitors.

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Powers up then shuts down within 5 seconds? Power supply board? How much to repair?


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When i turn on my Panasonic stereo set model number: SA-CH94M the systems just displays F61 them Goodbye and Shuts down. What is the cause of this and how can it be fixed? A quick response will be greatly...


Hi denty56,

F61 is an error code for short and or overload. This will appear once the processor sense a malfunction either on the power supply or on the load (high chance is the output IC). DIY steps are as follow to determine where the fault is : 1. Allow the unit to cool down for an hour. Give proper ventilation and keep away all obstruction from the vent to have a sufficient air flow. 2. Disconnect one at a time the speakers, inputs, from the unit while powering it on.

If the unit back to normal again then you've confirmed that any of the above caused the error code. If #1 is the caused, you have to check also the exhaust fan, clean it as much as possible, replaced if faulty. If #2 is the caused (speaker) check the wire and speakers for short, (input) check the RCA cord for short or replaced if necessary.

If the above simple fix didn't cure the error code, you can try the next steps if you are an electronicsenthusiast. Now after removing the cover, you have to concentrate first on the power supply board. Look for bulged electrolytic capacitor. Leaky capacitor will affect the regulation of the supply and will trigger the error code. Look for dry joints. Check it also in the pre-amplifier stage, main output board where a big heat sink is located. Next disable the output amplifier stage by disconnecting the supply. If the unit come out, make some re-soldering on the board, spot the cold solder and dry joints and then try to connect again. If the error code appear again, high chance that your output IC is faulty but still to be confirmed. Using the disoldering pump and soldering iron pull-out the output IC from the board then try the unit. If the error code disappear, confirmed that your IC is faulty.After trying the abovesteps-by-steps guide and still the symptoms persist this is the time for you to send it to repair shop. Remember that your unit has a lot of parts and only some basic steps have done, leave the expert to troubleshoot the entire unit.

Hope I helped you.

Have a nice day!

Thanks for using Fixya.

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AFTER A FEW SECONDS MY SYSTEM SHUT DOWN AND SHOWS ME F61 ON THE SCREEM


  1. AFTER A FEW SECONDS MY SISTEM SHUT DOWN AND SHOW ME F61 ON THE SCREEN

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Gary

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When your home theater's display reads PROTECTION, it means the home theater is over heating and the unit will shut down to prevent any damage. This can happen if the unit is stacked along with other electronic devices or the unit is in an enclosed area that prevents the unit from cooling properly. To decrease the chance of overheating, relocate your home theater to a more open area.




If the home theater display reads PROTECTION every time you turn it on, no matter where or how the unit is placed, it needs service. To set up service call Samsung Customer Care at 1-800-SAMSUNG (1-800-726-7864). Have your model number and serial number on hand to set up service.

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Power turns off


Protect mode will kick in whenever a fault is detected.

You get the unit not powering up, and sometimes you hear a clicking noise, that is the protection switch that keeps shutting down the unit.

Causes that can start protect mode are:

Electrostatic harges on internal circuits.
Leave the unit unplugged for power for one hour or so, this will allow discharge.

Bad speaker wiring.
Check speaker wiring, try unplugging and plugging back, or start after removing one speaker at the time.

Internal fault.
Internal fault is the natural cause for protect mode. If all the above did not work, then the problem is a blown component or an internal fault. In this case the unit must be taken apart , tested and repaired by an experienced person.
If the unit is less than one year old, or if you want to get service, call Sony at the phone number listed on the product documentation.

Regards.

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Hey rick8468,

According to information provided by the manufacturer, a problem has occurred that may require physical repairs. There are however, two suggested solutions to this issue you may wish to try before consulting Panasonic technical support or your local repair facility.

The first suggestion is to simply turn the player off, then turn it back on to see if this error message is cleared.

The second is to power the unit down, disconnect any power supply (AC adaptor and battery pack), reconnect the power supply, and finally turn the product on again.

In the event that neither of these suggestions resolve the problem, the manufacturer has advised contacting your local dealer for further assistance. You may wish to make a note of the exact error message, as the numbers after the “H” indicate what the exact problem may be.

Hope this helps you out.

Sincerely,
Aaron
Go Ahead. Use Us.

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