NEC FS-6390 TV Problem

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David Contact options for registered users 's Avatar (by Gravatar) posted on
November 19, 2005, 6:26 am
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Hi All,

I have an NEC FS-6390 here that has no vertical.  The TV has just a white
line running across the centre of the screen.

Has anyone had this problem with NEC's in the past who can offer some
suggestions?

Thanks in advance.



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David Nicholls Contact options for registered users 's Avatar (by Gravatar) posted on
November 19, 2005, 12:03 pm
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Re: NEC FS-6390 TV Problem


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See for example http://www.repairfaq.org/REPAIR/F_tvfaq5.html#TVFAQ_016

DN

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rg26ce1991 Contact options for registered users 's Avatar (by Gravatar) posted on
November 23, 2005, 4:34 am
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Re: NEC FS-6390 TV Problem


David.
I have repaired a few FS-6390 with this problem.
Most likely IC401 is crook, this is a LA7838 vertical output chip.

Also check,
R522 2.7ohm 2w fuseable.
R523 2.2 ohm 1/2w fuseable.
R427 100 ohm 1/4w fuseable.

Replace:-
C609 100uF 16v
C533 2.2uF 160v
C611 22uF 25v
C411 100uF 35v
C607 220uF 10v
 
Russell Grifiths.


David Contact options for registered users 's Avatar (by Gravatar) posted on
November 24, 2005, 7:05 am
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Re: NEC FS-6390 TV Problem


Many thanks for your help guys.


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