Hi there,

My 6-year-old Technics receiver has recently developed a problem with
switching into protected mode (Overloaded appears on the display) after
being switched on for a few minutes. Now this model ran extremely hot
(couldn't even touch the top of the case) but this was apparently
perfectly normal according to the people from Panasonic and other stuff
I've read online. Unfortunately, I think the years of heat probably
fried something in there.

I've tried the following without success:
-Switch speakers from channel A to B
-Replace speaker wire
-Replace speakers and try channel A and B
-Turning off both channels still make the receiver go into protected
mode
-Running the amp without speakers attached

Since I suspected that this issue might be heat related I replace the
fan at the back of the receiver with a 80mm computer fan wired to a 12V
plug-in power supply. To my surprise, the receiver did not go into
protected mode the receiver stayed cool to the touch. Although this
work around enables me to use the receiver without any problems, I find
it very annoying to have to plug in the fan every time I want to listen
to music. Additional the hum of the fan is audible when the audio is at
low volume.

I though about bringing it in to a shop for repair but most shops want
$80 just to open the case...it gets more expensive from there. This is
probably not worth the money for a 6-year-old receiver. I've read on
the forums that Technics receivers a prone to soldier connection
failure but I'm not sure where to start looking.

Any advice would be greatly appreciated.

Cheers,

Marc Savage

In article .com, "Marc" wrote:
Hi there,

My 6-year-old Technics receiver has recently developed a problem with
switching into protected mode (Overloaded appears on the display) after
being switched on for a few minutes. Now this model ran extremely hot
(couldn't even touch the top of the case) but this was apparently
perfectly normal according to the people from Panasonic and other stuff
I've read online. Unfortunately, I think the years of heat probably
fried something in there.

I've tried the following without success:
-Switch speakers from channel A to B
-Replace speaker wire
-Replace speakers and try channel A and B
-Turning off both channels still make the receiver go into protected
mode
-Running the amp without speakers attached

Since I suspected that this issue might be heat related I replace the
fan at the back of the receiver with a 80mm computer fan wired to a 12V

You took the other fan out? It may be a temperature controlled fan which for
some reason, is not responding. I still can't figure the heat, but could be a biasing
problem.

greg

The stock fan on this unit is volume activated instead of temperature
activated. It didn't turn on unless the volume was close to 3/4 max.
Heat however, never used cause any problems as I mentioned before.
Somehow, I am suspecting that a component in the unit is now heat
sensitive...if that can be possible.

First of all, you should order the original fan that goes with the receiver.
You should then troubleshoot it to find out if there are any defective
components in the power supply, drivers, and or output stage.

Proper servicing of your amplifier will require the necessary skills and
tools to do a proper job.

--

JANA
_____


"Marc" wrote in message
oups.com...
Hi there,

My 6-year-old Technics receiver has recently developed a problem with
switching into protected mode (Overloaded appears on the display) after
being switched on for a few minutes. Now this model ran extremely hot
(couldn't even touch the top of the case) but this was apparently
perfectly normal according to the people from Panasonic and other stuff
I've read online. Unfortunately, I think the years of heat probably
fried something in there.

I've tried the following without success:
-Switch speakers from channel A to B
-Replace speaker wire
-Replace speakers and try channel A and B
-Turning off both channels still make the receiver go into protected
mode
-Running the amp without speakers attached

Since I suspected that this issue might be heat related I replace the
fan at the back of the receiver with a 80mm computer fan wired to a 12V
plug-in power supply. To my surprise, the receiver did not go into
protected mode the receiver stayed cool to the touch. Although this
work around enables me to use the receiver without any problems, I find
it very annoying to have to plug in the fan every time I want to listen
to music. Additional the hum of the fan is audible when the audio is at
low volume.

I though about bringing it in to a shop for repair but most shops want
$80 just to open the case...it gets more expensive from there. This is
probably not worth the money for a 6-year-old receiver. I've read on
the forums that Technics receivers a prone to soldier connection
failure but I'm not sure where to start looking.

Any advice would be greatly appreciated.

Cheers,

Marc Savage

by then might as well buy a new one, those thing costs only 200 dollars last
time I heard... I used to have one of those Technics reciever (I think its
SA-AX.... whatever) and it would get real hot connecting to any 8 ohms
speaker... I dont know if its normal and the fan never runs unless the
volume is over 12 o clock position. Of course that would blow some speakers
or upset some neighbors....

Now I have an integrated amp from Usher and I hook it up to a pair of 8 ohm
speaker and it doesnt even get warm.... I wonder why.... maybe it'll get
warmer if you connect it to a 4 or 2 ohm speaker?

--
TAI FU
"JANA" wrote in message
...
First of all, you should order the original fan that goes with the
receiver.
You should then troubleshoot it to find out if there are any defective
components in the power supply, drivers, and or output stage.

Proper servicing of your amplifier will require the necessary skills and
tools to do a proper job.

--

JANA
_____


"Marc" wrote in message
oups.com...
Hi there,

My 6-year-old Technics receiver has recently developed a problem with
switching into protected mode (Overloaded appears on the display) after
being switched on for a few minutes. Now this model ran extremely hot
(couldn't even touch the top of the case) but this was apparently
perfectly normal according to the people from Panasonic and other stuff
I've read online. Unfortunately, I think the years of heat probably
fried something in there.

I've tried the following without success:
-Switch speakers from channel A to B
-Replace speaker wire
-Replace speakers and try channel A and B
-Turning off both channels still make the receiver go into protected
mode
-Running the amp without speakers attached

Since I suspected that this issue might be heat related I replace the
fan at the back of the receiver with a 80mm computer fan wired to a 12V
plug-in power supply. To my surprise, the receiver did not go into
protected mode the receiver stayed cool to the touch. Although this
work around enables me to use the receiver without any problems, I find
it very annoying to have to plug in the fan every time I want to listen
to music. Additional the hum of the fan is audible when the audio is at
low volume.

I though about bringing it in to a shop for repair but most shops want
$80 just to open the case...it gets more expensive from there. This is
probably not worth the money for a 6-year-old receiver. I've read on
the forums that Technics receivers a prone to soldier connection
failure but I'm not sure where to start looking.

Any advice would be greatly appreciated.

Cheers,

Marc Savage