Question about Audio & Video Receivers
Kenwood KRF-V8090D Amplifier is displaying the error message, which on page 58 of manual states, that the 'Cause' is that the 'Speaker cords are short-circuited' and the 'Remedy' is to 'eliminate the short-circuiting'.
I have disconnected all the speaker connections, the sub and even the FM antenna, but I am still getting the 'Standby indicator light blinking' when the unit is switched on.
I have also tried 'Resetting the Microcomputer' and plugging into another power point, but no luck.
It sounds like you have eliminated all the things that could generate this symptom that are external to the amp. It is most likely that there is an internal problem that is causing the amp to go to protection mode. A power supply failure(maybe a fuse) is the only really user serviceable part inside the amp. Perhaps check for failed fuses, replacing any that may have blown with exactly the same type. BE SURE TO UNPLUG AT THE WALL FIRST:)
Is the amp still under warranty? If so, then returning it to a Kenwood service center is the shot. If you want to have a go at repairing it, I can talk you through it, but some experience with this sort of thing is very necessary. Good luck
Posted on Apr 06, 2008
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If it's microprocessor-related try the procedure at the top of page 26. Of course, this will clear all your custom settings...
"Unplug the power cord from the wall outlet, then plug it back in while holding down the POWER key."
Generally speaking, an amp protects itself from heat, shorts and overloads.
Overloads can be from excessive periods of high output 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 hands-on tech.
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