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Help need to repair my VCR Panasonic NV_G10

 
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pmc



Joined: 18 Jan 2009
Posts: 2
Location: Italy
PostPosted: Sun Jan 18, 2009 1:25 pm    Post subject: Help need to repair my VCR Panasonic NV_G10 Reply with quote
My old VCR Panasonic NV_G10 need repair, all is working fine except the play function. Drum doesn't spin up, just a little movement and then all stop. Replaced AN6387 (Cylinder Motor Servo) but no luck. Thanks' for any advice.

Service manual:
http://www.eserviceinfo.com/downloadsm/6069/Blaupunkt_RTV316.html

Paolo,Italy
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vtech



Joined: 08 May 2006
Posts: 1264
Location: USA
PostPosted: Sun Jan 18, 2009 5:49 pm    Post subject: Reply with quote
If the drum is not physically binding and free to turn and you have the drive and supply voltages present and not buckling under load, it is likely the drum motor itself( although rare, failure of the hall sensor inside the motor can prevent operation).
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pmc



Joined: 18 Jan 2009
Posts: 2
Location: Italy
PostPosted: Mon Jan 19, 2009 5:38 pm    Post subject: Reply with quote
Yes the drum is free to turn, then when i push Play i can feel with my finger that the drum became hard to turn for about 1-2 seconds. It's like the magnetic field doesn't rotate. As a non expert in VCR repair i am asking if it's possible to test the hall sensor inside the motor. Or better if i trash the unit? what a shame, my beloved 23 years old first VCR!
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vtech



Joined: 08 May 2006
Posts: 1264
Location: USA
PostPosted: Tue Jan 20, 2009 4:52 am    Post subject: Reply with quote
pmc wrote:
Yes the drum is free to turn, then when i push Play i can feel with my finger that the drum became hard to turn for about 1-2 seconds. It's like the magnetic field doesn't rotate. As a non expert in VCR repair i am asking if it's possible to test the hall sensor inside the motor. Or better if i trash the unit? what a shame, my beloved 23 years old first VCR!


I am afraid there is no easy way to test the hall effects. All you can do is to make sure that there is no connection issue from the connector to the drive IC. It is even possible to have a connection issue where the sensors are soldered which usually requires dismantling the motor itself(you will never get it back together w/out proper tools though).

So, sounds like you just may be out of luck? The "magnetic force" feel you are describing does sound very much like a sensor failure. Make absolute sure there is nothing like a cracked pcb run or a connection issue....otherwise, Perhaps someone, somwhere may still have a junker or time to punt. Wink
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