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Mzr 700 switching off problem

Sony MZR 700

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#1 pinkfloyd1987

pinkfloyd1987

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Posted 24 June 2012 - 03:23 AM

There is a problem with my minidisc recorder switching off when any part of the top right hand of the front is pressed even very lightly eg in pocket.
I would be grateful of any help.

Thanks.

#2 jim.hoggarth

jim.hoggarth

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Posted 24 June 2012 - 09:20 AM

That's a rare problem on the R700, and something I would not expect to see. The most likely culprit is a bad joint somewhere on the main board, or the chassis is bent slightly and the disc-in switch is 'flickering' as the top case is moved. Has the unit been sat on? Usually this results in a cracked LCD unit too.

Another possibility, if it only happens when run from the battery rather than the mains power adapter, is the contact between the positive terminal under the battery flap and the circuit board. This is done by a peculiar 'finger' to one side of the battery terminal under the flap. If this is dirty there will be intermittent contact, of course. If it is bent too far forward, contact will also be problematic, Roughly, the 'finger' should be in line with the centre of curve of the contact plate. You should be able to make out the metal strip (half-round shape) with which this finger makes contact when the battery door is closed.

Let me know how you go on.
Jim




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