Question about Sony SLV-N750 VHS/S-VHS playback VCR

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Sony SLV-N750 Hi guys....Ned a Sony SLV-N750 Schematic. Does any one have it?

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  • John Byse
    John Byse Jul 23, 2008

    I have been looking for months for one too. My power supply is dead. Any info would be appreciated.



    MM85

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A common problem with the Sony SLV 700 series was the Mitsumi power supply (aka the electrolytic capacitors).

The metal box mounted in the middle of the complete power supply area fails. I encountered this problem about two years ago with my SLV-E730, it was just dead.

I did some Google searches and found quite a few people (who put some time into finding the problem) found that two of the Electrolytic Capacitors died. So rather than just replace two (after all the effort of getting into this tin-box), I took note of all 6 or 7, and replaced the lot (c153 ... c254). I figured that the heat in side the 'tin can' would have its effect on all of them (I tested a couple and they were down on the actual values). It was curious that some Cap's were rated for 85deg, and others 105deg, but I replaced them all with the exact same uF values (some slightly higher in voltage handling - 50v to 63v) but all at 105deg.

Then machine came back to life and has been as good as gold every since!!

I hate throwing things away especially when the problem cost less than $10 to fix....
Despite being old technology my children have 100+ tapes (very few bought) that they enjoy watching. This unit is so good at playback that you are not sure if a DVD is playing or a tape. I would not say these units are poorly built or disposable, it is just one component - aka the Mitsumi module used some ordinary Cap's.

Note: The metal box must be fully desolder-ed from the main board. That is 6 anchor points - the 4 inputs and the 8 or so outputs.

Posted on Aug 28, 2012

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Check "SAMS" repair manuals.

Posted on Sep 28, 2008

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