Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems.

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Fred Besancon
 
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Default Marantz SR-18 loses memory

I'm presently servicing a Marantz SR-18 for center channel distorted.
That problem
has been repaired (cold solder joints). I noticed that even though the
unit is plugged
in the AC, when turned off and then turned on again, the last settings
are lost.
The unit goes into initial default: FM at 87.5 Mhz and the volume at
minimum.
This doesn't seem normal??
Any help is appreciated........Fred
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JR North
 
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There's probably a lithium battery for backup on the board.
JR
Fred Besancon wrote:

I'm presently servicing a Marantz SR-18 for center channel distorted.
That problem
has been repaired (cold solder joints). I noticed that even though the
unit is plugged
in the AC, when turned off and then turned on again, the last settings
are lost.
The unit goes into initial default: FM at 87.5 Mhz and the volume at
minimum.
This doesn't seem normal??
Any help is appreciated........Fred



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Home Page: http://www.seanet.com/~jasonrnorth
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Mark D. Zacharias
 
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Default



Fred Besancon wrote:

I'm presently servicing a Marantz SR-18 for center channel distorted.
That problem
has been repaired (cold solder joints). I noticed that even though the
unit is plugged
in the AC, when turned off and then turned on again, the last settings
are lost.
The unit goes into initial default: FM at 87.5 Mhz and the volume at
minimum.
This doesn't seem normal??
Any help is appreciated........Fred





"JR North" wrote in message
...
There's probably a lithium battery for backup on the board.
JR



More likely a "backup capacitor", for example: 0.22F at 5.5 volts. Pretty
common problem.

Mark Z.


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