Question about Audio Players & Recorders
Someone gave me thies receive (technics av control amp su-g88 classh+), when i connected the receiver, it says overload, Power off and On. I do it and it still occurs. Before i connected anything, since it was a gift, i opened it n checked the small fuses it had, they were good. Then when i conncted it showed me that, what can I do in reference to that.
SOURCE: Technics SU-G91 OVERLOAD PROBLEM
OVERLOAD means that input signal level is too high. Can you be more specific? From which source you play music when OVERLOAD icon appears?
Posted on Oct 11, 2007
SOURCE: OVERLOAD MESSAGE
get a manual for ex-140 here
or try ( i didnt check it) for ex-400 "Unsorted Technics Service Manuals" at
Posted on Feb 28, 2008
SOURCE: Overload on Technics SA DA10
This is an old message so you may not be interested any more.
There are a couple of possibilities; the high power of this unit seems to fry speakers fairly often and although they mostly fail 'open,' they can overheat causing the voice coil to lose its insultation and cause a short instead.
This may also be caused by the failure of one or more output modules causing the power supply to limit and give you the overload indication.
If an output module has failed and the unit is not limiting current, it may destroy speakers too.
Some knowledge and a decent meter would reveal the nature of the failure pretty quickly but describing the steps necessary to troubleshoot this is a little beyond the scope of this forum.
Posted on Apr 23, 2008
An amplifier should never be turn on without speakers, it will overload internally.
make sure speakers work and try again.
Posted on Dec 04, 2009
The question is what is causing the overload? The power supply or the output devices on the heat sink?
If you have accidently shorted a speaker wire, then the answer will be output devices, otherwise it could be anything in the power section. You may find a burnt or damged device with either of the causes.
Posted on Mar 09, 2010
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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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