I get and F61 error message on my panasonic surround sound. I reconnected all the speakers and reset the unit but still get the error

How does it manage without speakers?

F61 usually means the amp has detected a short or a severe microprocessor error.

Generally speaking, an amp protects 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.

Panasonic sc-ua3 system F61 error was appears at max volume (party mode). I found the service manual on the web and my problem is abnormal voltage output at digital amplifier on left channel. If a abnormal voltage is detected, power supply is changed in standby mode. My case is a audio amplifiers TAS5624A failure. Measured voltage at output IC increase to 10 V for 2 sec only on left channel, after the protection system change back the unit in standby mode (normal protection to avoid speakers failure in this case). Speakers are ok. Now i'm waititing for a new IC, on allied express is around 1 dollar. It is a signal from control unit to power supply 0V means damage and standby, 3V ok in my case. Power supply deliver 32V in normal operation and 14V in standby.

I have a panasonic hometheater it always shows f61 error after the use of 30mins to 40mins but it was by solved by the help of this site. Actually its fan was not working and due to overheating it shows the error f61 but now its fine and well working

How to repair f61

I had an experience of F61 of my SA-VK50 because of loosing connector side PCB from Bottom PCB. Just tighted and problem solved. -Mahilal-