My name is Rob from hamburg, germany.
could you help me with the repair of my receiver?
Which component do I have to replace to have rid
of this problem once and for all.
Its been in for replacement of a fuse (F70?) three times,
the time has come to do it myself.
Look forward to your reply.
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Re: SA HE200 Code F70 problem
Error F70 as you have found out is a blown 1.25Amps fuse. To my knowledge, Germany uses 220 Volts 50 Hz. Pls verify if the Panasonic is rated at 220 or 240 Volts and 50Hz or 60Hz. The frequency or voltage settings might have to be set appropriate to your local settings.
Alternately, It may be that your fuse is rated to be a fastblow type meaning that it will instantaneously burn out on certain occasion even under normal usage. A quick but dirty solution is to use a slowblow fuse. As the name implies, it is still a fuse and it will still burn out if anythings goes wrong. However, it may take a bit more time before reacting. The time difference would spell the difference between constantly changing your fuse or allow more time before it blows (if it will really ever blow). There is however of course the possibility that if and when something is really wrong inside the Panasonic, the fuse being a slowblow may hesitate a bit longer and allow more damage.
It is normal for devices such as these to have a higher initial current than the running current and fuses are rated normally on a compromise between the two.
Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.
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The F70 error code is not for the replacement of a fuse. It is an error code for the microprocessor having trouble communicating.
Try leaving the unit unplugged overnight and then plug it back in again. This should clear that code.
If it does not clear the code, try doing a hard reset with the unit NOT PLUGGED IN.
You would need to use a small metal pick or small flathead screwdriver and use a jumper to ground the pick/screwdriver to the chassis of the unit. Then you slowly run that pick over each pin of the micro, thus grounding every pin one after the other. This way you are sure to ground out the reset pin.The unit must not be plugged in when you do this. It will clear all memory and settings.
Without having this unit in front of me to properly troubleshoot with the proper tools, anything told to you is only a guess. Unless the person advising you has direct experience working on these units, they can not possibly know the solution to this problem.
I work at an authorized Panasonic service center and have never seen one of these receivers with that code and all it needed was a fuse replaced.
I have seen them needing the microprocessor replaced, but that is not something you could do yourself without the very best soldering skills. The microprocessor is a surface mounted component with 80 pins and is a very difficult component to replace. You can see it on the display panel near the middle of the board.
That code is no guarentee that the micro is bad either. if it doesn't clear the code by the way I have told you above, it needs to be serviced. Like I said, nobody can troubleshoot the communication of the micro without an O-scope, schematics, and a very good knowledge of how they work.
I think the previous service center charged you for a fuse and all the did was a hard reset of the unit.
Let me know how you do with this solution and please do not rate it until we have had a chance to explore other options. I actually have repaired a couple of these before.
Hello It preamplifier section has the trouble. If you want to do it by yourself at home, you must have through knoledge in electronics, as this section inside is a very coplicated one, even a well experienced technican too, take a long time to troubleshoot, and locate the faulty component or components. OK.
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you many have a fraid wire or if you playing the unit to
loud and overload the amp this may cause it to go to protect. Also is the the
receiver properly vented. If it get to warm the receiver will also go
into the protect mode. hope this helps
You might want to re-wire your system so that the SA-HE200 only handles audio for the various components. Run video lines directly to the TV/Monitor. Always use the best (most advanced) matching cable type between the two.
I always setup my systems like this anyway. You end up using less and shorter cable runs and often get to use a video cable type the audio receiver doesn't support.
F70 interrmintent problem caused by (Ic-current) interupted, supply for cpu, Q1702 (emitter point) high resistant to IC1701, suggestion- connect a wire between these component due to pcb track poor contact.