Question about Technics Audio Players & Recorders
SOURCE: My Technics DV-170 shows F61
That is a protection indication. This means that the output amplifier section has a problem that was detected and a shutdown occurred to prevent further damage. I don't have a listing for your model, so I can't provide you with too many details, but look for a large black IC attached to a heatsink. That should be the output amp pac. If there is not one, there should be 4 3-legged parts (transistors) and one or more of those may have failed. I have also seen cases where a voltage regulator that supplies the driver circuits has had bad connections thereby shutting down the driver circuit.
Keep us posted.
Posted on Jun 25, 2008
Each unit will have it's own manual, so quote each number, unless it's a package.
try this site if not found lose the /support.
Posted on Aug 24, 2009
SOURCE: Technics amp hd81 shows fault
IS it the amp fan failing? It could be something simpler and cheap.
Generally speaking, an amp attempts to protect 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 '*****'. 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.
WE don't fix things, nor do we provide parts. We provide advice and answers and usually simple direction for where to look for answers, which are usually available somewhere on the Internet.
You can find the Service Manual (not necessarily for free) by web searching "Technics HD81 Service Manual". It will identify the fan part number. Then web search for THAT.
Only YOU know where you are so we can't point you to a repair tech. labor charges will vary. Once again, web search.
Posted on Aug 07, 2011
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