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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.
Hi, F61 usually means that the unit has some sort of DC error internally. One of the amplifiers could have failed. The HT70 is an older unit and dry joints around the voltage regulator and power amplifier is also very common. Also check that the fan is in good order.The unit will most likely have to be checked by a professional tech.
REPLACE RSN IC(SOUND AMPLIFIER THEN CHECK AND REPLACE 2 -3 SMALL TRANSISTORS TWO 2SC3199 AND ONE 2SD592 THEY RE ON THE AMPLIFIER BOARD,EVEN WHEN RSN IC IS REMOVED SHOULD NOT SHOW F61 AFTER YOU'VE REPLACED THOSE TRANSISTORS
Hello....
Isolate problem by disconnecting Amplifier ic (RSN),if f61 still appeares after disconnection of RSN ic ,than check voltage supply rails ,may be one of them has irregularities.
Gopali
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.
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