Author Topic: Sony HCD-NEZ7 - CD Skipping.  (Read 2652 times)

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Turnip

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Sony HCD-NEZ7 - CD Skipping.
« on: July 07, 2015,12:42:42 »
Hi folks,
Had one in a couple of times where cust complained of disc skipping, so I cleaned the lens and sent it back.

Came in again so thought take it apart, discovering the spin motor, although seeming OK, was dubious using the AVO 8 on low ohms to check - They normally read about 80 Ohms + and spin - This one needed a kick start and read 10 Ohms, but still ran.

Be lost without the AVO, as Digital meters don't have enough push for a motor, but useful in their way.

Sorry Bruce - No piccies, even of the AVO - Chris.

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Sony HCD-NEZ7 - CD Skipping.
« on: July 07, 2015,12:42:42 »

Keith

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Re: Sony HCD-NEZ7 - CD Skipping.
« Reply #1 on: July 08, 2015,03:40:26 »
Hi Chris,

I always find it worth while giving the spindle motor a little squirt of WD40 and running it in reverse direction to give it a clean.

Keith

downunder

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Re: Sony HCD-NEZ7 - CD Skipping.
« Reply #2 on: July 09, 2015,04:18:03 »

Hi Chris,

Vive la AVO. I find an analogue meter indispensable. 10 ohms sounds a tad low, but who's to know. A grease and oil change should sort it.

Bruce

Mulja tv repair portal

Re: Sony HCD-NEZ7 - CD Skipping.
« Reply #2 on: July 09, 2015,04:18:03 »

Turnip

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Re: Sony HCD-NEZ7 - CD Skipping.
« Reply #3 on: July 09, 2015,12:54:32 »
Hi Keith and Bruce,

Remembering Sanyo VCR mode motors, where if taken apart and the commutator cleaned of metal crap between the sectors, a pound was easily made.

Recently had the problem with audio cassettes where motors are now hen's teeth. Had one in where commutator shorts had duffed up the internal regulator - Had to mend as couldn't replace - Fun really.

Guess with CD motors costing pence, it isn't a useful option - Motors used to have Carbon brushes where the problem didn't arise - Metal brushes (although cheap) don't slide so easy and carve up the commutator. Note there are small holes for brush alignment, but never tried squirting anything in them - Chris.


Mulja tv repair portal

Re: Sony HCD-NEZ7 - CD Skipping.
« Reply #3 on: July 09, 2015,12:54:32 »

 

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