Hi!
I have a TECHNICS SA-AX610 power amplifier that when turned on, an 'OVERLOAD'
message appears on the screen and there's no action on any of the buttons nor
any audio output...Before I start troubleshooting it I would like to know if
any one has run into this same probelm before?..which will make the repair much
easier.
TIA
Alphie.

Probably shorted audio power output semiconductors.
--
Best Regards,
Daniel Sofie
Electronics Supply & Repair
----------------------------------


"L1ange bleu" wrote in message
I have a TECHNICS SA-AX610 power amplifier that when turned on, an
'OVERLOAD'
message appears on the screen and there's no action on any of the buttons
nor
any audio output...Before I start troubleshooting it I would like to know
if
any one has run into this same probelm before?..which will make the repair
much
easier.
Alphie.

Also, I wouldn't rule out power supply problems, such as a bad resistor,
transistor, zener diode, etc, or bad solder connections, particularly at the
output IC and voltage regulators.

Mark Z.


"Sofie" wrote in message
...
Probably shorted audio power output semiconductors.
--
Best Regards,
Daniel Sofie
Electronics Supply & Repair
----------------------------------


"L1ange bleu" wrote in message
I have a TECHNICS SA-AX610 power amplifier that when turned on, an
'OVERLOAD'
message appears on the screen and there's no action on any of the
buttons
nor
any audio output...Before I start troubleshooting it I would like to
know
if
any one has run into this same probelm before?..which will make the
repair
much
easier.
Alphie.

Almost every time we have had this fault, it was the power output devices,
and their respective drivers. Also, many times the bias resistors, and other
components were damaged.

The main conditions that cause these power devices to fail are, shorting
speaker wires, defective drivers or crossover in a speaker box, turning the
amplifier up too loud causing distortion, and thus overheating the output
stage.

After servicing the amplifier, make sure that the speakers are still in good
condition. Many times, the speakers are damaged when this type of condition
occurs.

--

Greetings,

Jerry Greenberg GLG Technologies GLG
=========================================
WebPage http://www.zoom-one.com
Electronics http://www.zoom-one.com/electron.htm
Instruments http://www.zoom-one.com/glgtech.htm
=========================================


"L1ange bleu" wrote in message
...
Hi!
I have a TECHNICS SA-AX610 power amplifier that when turned on, an
'OVERLOAD'
message appears on the screen and there's no action on any of the buttons
nor
any audio output...Before I start troubleshooting it I would like to know if
any one has run into this same probelm before?..which will make the repair
much
easier.
TIA
Alphie.