I am new to this forum and I want to thank anyone in advance who can
help me with my problem.
My friend's stereo amplifier has not worked for a while and I just
surprised her by replacing her amp ( Onkyo ) with a Yamaha A 700. After
connecting everything the stereo seemed to work fine but then the sound
suddenly cut off ( with an audible click) the came back on a few
seconds latter. This would happen everytime I turned up the volume or
changed the balance or switched from stereo to mono. Apparently this is
what happened with her old amp!! The amp seems to cut off in response
to some increased load. She live in an old row home that has been
partially rewired. The outlet is fused to a 20 amp fuse, and the fuse
does not blow.The speaker wire runs through the walls and connected to
terminals on a wall plate. A TV pluged into the same outlet works fine.
(not running TV at the same time). there is no hum or distortion and
the amp does not feel hot. At low vol it plays without cutting out.
What could be the problem ?

In article .com, wrote:
I am new to this forum and I want to thank anyone in advance who can
help me with my problem.
My friend's stereo amplifier has not worked for a while and I just
surprised her by replacing her amp ( Onkyo ) with a Yamaha A 700. After
connecting everything the stereo seemed to work fine but then the sound
suddenly cut off ( with an audible click) the came back on a few
seconds latter. This would happen everytime I turned up the volume or
changed the balance or switched from stereo to mono. Apparently this is
what happened with her old amp!! The amp seems to cut off in response
to some increased load. She live in an old row home that has been
partially rewired. The outlet is fused to a 20 amp fuse, and the fuse
does not blow.The speaker wire runs through the walls and connected to
terminals on a wall plate. A TV pluged into the same outlet works fine.
(not running TV at the same time). there is no hum or distortion and
the amp does not feel hot. At low vol it plays without cutting out.
What could be the problem ?


Measure the DC ohms of the system. You can buy a cheap tester
if you don't have one. Disconnecte the stereo and measure for
low ohms. The reading should be somewhere above 6 ohms
or thereabouts. If it says 3 ohms you have trouble.
You should also have infinite ohms
between left and right normally, allthough a common line
might be used and be OK, but in some cases not be OK.
greg

On 11 Apr 2006 08:00:28 -0700, wrote:

I am new to this forum and I want to thank anyone in advance who can
help me with my problem.
My friend's stereo amplifier has not worked for a while and I just
surprised her by replacing her amp ( Onkyo ) with a Yamaha A 700. After
connecting everything the stereo seemed to work fine but then the sound
suddenly cut off ( with an audible click) the came back on a few
seconds latter. This would happen everytime I turned up the volume or
changed the balance or switched from stereo to mono. Apparently this is
what happened with her old amp!! The amp seems to cut off in response
to some increased load. She live in an old row home that has been
partially rewired. The outlet is fused to a 20 amp fuse, and the fuse
does not blow.The speaker wire runs through the walls and connected to
terminals on a wall plate. A TV pluged into the same outlet works fine.
(not running TV at the same time). there is no hum or distortion and
the amp does not feel hot. At low vol it plays without cutting out.
What could be the problem ?



Shorted speaker wires. If the wall plate is metal, that's where I'd
check first. Easy test. Obtain some speaker wire and hook the
speakers directly up to the amplifier and see if the problem remains.
If it does, then the speakers are faulty. Rare but it occasionally
happens. Chuck

wrote in message
oups.com...
I am new to this forum and I want to thank anyone in advance who can
help me with my problem.
My friend's stereo amplifier has not worked for a while and I just
surprised her by replacing her amp ( Onkyo ) with a Yamaha A 700. After
connecting everything the stereo seemed to work fine but then the sound
suddenly cut off ( with an audible click) the came back on a few
seconds latter. This would happen everytime I turned up the volume or
changed the balance or switched from stereo to mono. Apparently this is
what happened with her old amp!! The amp seems to cut off in response
to some increased load. She live in an old row home that has been
partially rewired. The outlet is fused to a 20 amp fuse, and the fuse
does not blow.The speaker wire runs through the walls and connected to
terminals on a wall plate. A TV pluged into the same outlet works fine.
(not running TV at the same time). there is no hum or distortion and
the amp does not feel hot. At low vol it plays without cutting out.
What could be the problem ?

Look for old glue that has dried out and absorbed moisture from the air and
become corrosive, particularly around the PS caps.

Leonard

The speaker boxes may have a fault, or are much too low in impedance for the
amplifiers. Sometimes especially low cost speakers or the crossovers can go
defective, and cause amplifier problems.

--

JANA
_____


wrote in message
oups.com...
I am new to this forum and I want to thank anyone in advance who can
help me with my problem.
My friend's stereo amplifier has not worked for a while and I just
surprised her by replacing her amp ( Onkyo ) with a Yamaha A 700. After
connecting everything the stereo seemed to work fine but then the sound
suddenly cut off ( with an audible click) the came back on a few
seconds latter. This would happen everytime I turned up the volume or
changed the balance or switched from stereo to mono. Apparently this is
what happened with her old amp!! The amp seems to cut off in response
to some increased load. She live in an old row home that has been
partially rewired. The outlet is fused to a 20 amp fuse, and the fuse
does not blow.The speaker wire runs through the walls and connected to
terminals on a wall plate. A TV pluged into the same outlet works fine.
(not running TV at the same time). there is no hum or distortion and
the amp does not feel hot. At low vol it plays without cutting out.
What could be the problem ?

Chuck wrote:
On 11 Apr 2006 08:00:28 -0700, wrote:

I am new to this forum and I want to thank anyone in advance who can
help me with my problem.
My friend's stereo amplifier has not worked for a while and I just
surprised her by replacing her amp ( Onkyo ) with a Yamaha A 700.
After connecting everything the stereo seemed to work fine but then
the sound suddenly cut off ( with an audible click) the came back on
a few seconds latter. This would happen everytime I turned up the
volume or changed the balance or switched from stereo to mono.
Apparently this is what happened with her old amp!! The amp seems to
cut off in response to some increased load. She live in an old row
home that has been partially rewired. The outlet is fused to a 20
amp fuse, and the fuse does not blow.The speaker wire runs through
the walls and connected to terminals on a wall plate. A TV pluged
into the same outlet works fine. (not running TV at the same time).
there is no hum or distortion and the amp does not feel hot. At low
vol it plays without cutting out. What could be the problem ?



Shorted speaker wires. If the wall plate is metal, that's where I'd
check first. Easy test. Obtain some speaker wire and hook the
speakers directly up to the amplifier and see if the problem remains.
If it does, then the speakers are faulty. Rare but it occasionally
happens. Chuck

Classic speaker wire problem.

Mark Z.

"Leonard Caillouet" wrote in message
...

wrote in message
oups.com...
I am new to this forum and I want to thank anyone in advance who can
help me with my problem.
My friend's stereo amplifier has not worked for a while and I just
surprised her by replacing her amp ( Onkyo ) with a Yamaha A 700. After
connecting everything the stereo seemed to work fine but then the sound
suddenly cut off ( with an audible click) the came back on a few
seconds latter. This would happen everytime I turned up the volume or
changed the balance or switched from stereo to mono. Apparently this is
what happened with her old amp!! The amp seems to cut off in response
to some increased load. She live in an old row home that has been
partially rewired. The outlet is fused to a 20 amp fuse, and the fuse
does not blow.The speaker wire runs through the walls and connected to
terminals on a wall plate. A TV pluged into the same outlet works fine.
(not running TV at the same time). there is no hum or distortion and
the amp does not feel hot. At low vol it plays without cutting out.
What could be the problem ?

Look for old glue that has dried out and absorbed moisture from the air
and
become corrosive, particularly around the PS caps.

Leonard


In both units?

wrote in message
oups.com...
I am new to this forum and I want to thank anyone in advance who can
help me with my problem.
My friend's stereo amplifier has not worked for a while and I just
surprised her by replacing her amp ( Onkyo ) with a Yamaha A 700. After
connecting everything the stereo seemed to work fine but then the sound
suddenly cut off ( with an audible click) the came back on a few
seconds latter. This would happen everytime I turned up the volume or
changed the balance or switched from stereo to mono. Apparently this is
what happened with her old amp!! The amp seems to cut off in response
to some increased load. She live in an old row home that has been
partially rewired. The outlet is fused to a 20 amp fuse, and the fuse
does not blow.The speaker wire runs through the walls and connected to
terminals on a wall plate. A TV pluged into the same outlet works fine.
(not running TV at the same time). there is no hum or distortion and
the amp does not feel hot. At low vol it plays without cutting out.
What could be the problem ?

You say both units have the same symptoms? Just take a pair of simple, 8 ohm
speakers (that you know are in working order) and some wire over to her
house and hook up her amp to them, directly. Crank it up and see if it still
does it.

I am with the other posters on this, either there is a wiring problem
somewhere, or a speaker problem. You don't mention the brand/model/impedence
of the speakers you are using. Just look on the back of them, it's likely
the impedence is on a label back there.

Michael Ware wrote:
wrote in message
oups.com...
I am new to this forum and I want to thank anyone in advance who can
help me with my problem.
My friend's stereo amplifier has not worked for a while and I just
surprised her by replacing her amp ( Onkyo ) with a Yamaha A 700. After
connecting everything the stereo seemed to work fine but then the sound
suddenly cut off ( with an audible click) the came back on a few
seconds latter. This would happen everytime I turned up the volume or
changed the balance or switched from stereo to mono. Apparently this is
what happened with her old amp!! The amp seems to cut off in response
to some increased load. She live in an old row home that has been
partially rewired. The outlet is fused to a 20 amp fuse, and the fuse
does not blow.The speaker wire runs through the walls and connected to
terminals on a wall plate. A TV pluged into the same outlet works fine.
(not running TV at the same time). there is no hum or distortion and
the amp does not feel hot. At low vol it plays without cutting out.
What could be the problem ?

You say both units have the same symptoms? Just take a pair of simple, 8 ohm
speakers (that you know are in working order) and some wire over to her
house and hook up her amp to them, directly. Crank it up and see if it still
does it.

I am with the other posters on this, either there is a wiring problem
somewhere, or a speaker problem. You don't mention the brand/model/impedence
of the speakers you are using. Just look on the back of them, it's likely
the impedence is on a label back there.




I wouldn't discount the ventilation issues that I raised earlier. If he
put the TT on top of the receiver, or otherwise reduced its breathing
room (a good bet) in order to accommodate the TT; it could very well
cause the symptoms described.

jak