Hey I get a huge BANG!! out of my SA-AK57 then it shuts off with an F61 error. It happens only when the unit is first turned on, after the bang happens i can turn it up as loud as i want cause i know it won't happen again, untill the unit rests for a while. sometimes i get a slightly softer bang and it doesn't turn off....i think one day its just gonna not work i need help. thanx
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F61 is an error code. It will automatically shuts down your unit. This is very common on your unit.
Try to checked if the fan is working or not. I have repaired some unit before, this is the caused why f61 appeared. The symptom is shutting down the unit after a few minute. If the fan is not working it will shuts off automatically to avoid further damaged to your output I.C. from overheating.
If confirmed that the fan is working then I've suspect that your output I.C. is shorted. This is quit technical and need to send to repair shop to isolate the faulty parts. The output IC of your unit is RSN series and quite expensive.
Typically the F61 error is a protection error indicating that there is a problem with the output amplifier section. The failiing part is usually IC501 (part number RSN311W64D) which costs about $95. Have this unit checked as there are other possibilities.
The F61 indicates protect mode. There is a problem with the output stage of the amplifier section and the unit shuts down to prevent further damage. This unit will require service of the amp section. You can try to contact Panasonic for the service manual.
The output amp pac is an RSN311W64D at a cost of $95 plus shipping.
This sounds like a power disconnection problem.
you have a large amount of components, on the motherboard that charge up with being used. ( namely fets/capacitors et,c ) when your system is powering off the instant disconnection of mains power, can cause a Bang or Pop to the speakers.
I,d suggest trying swapping the speakers over from right to left and vice versa. see if the errors still there.
Also try turning the volume right the way down, before switching off. is the bang quieter ?
Check the mains cable ( plug end ) see if theres a broken or loose wire at the plu ( causing an arc ) finally check that the plug ( cable grip ) plastic tang that holds the cable, has,nt been overtightened and damaged the cable underneath it.
I hope any of this helps you to a self diagnostic rectification of the problem listed. Also try without speakers is a suggestion.
Mike @ Compurepair.
I had the same problem, and I had to replace the fan on the unit. The fan would not turn on at all, so the computer would tell the unit to turn itself off. After the fan was replaced (which is relatively simple) it works like new.
F61 tells you its a power source problem according to the manual. to all F61 error it is very likley that the str470-050a reg legs desolderd and have broken away from the main body of the regulator giving you the f61 and shut down.