[TechAssist] Re: Hitachi VM-4400A camcorder, horizontal lines in pix

Kevin,
The problem is probably in the camera
DC/DC converter unit.
They are notorious for capacitor failure.
ESR the caps in the converter.
You will probably find many with high values.
I can E-Mail you the schematic if your mailbox
can handle a 32 Meg file.
Paul Westcott
Kingsway Electronics
Sudbury,Ont.
705 566-9290
westcott@xxxxxxx
kingswayelectronics@xxxxxxxxxx
----- Original Message ----- 
From: "Kevin" <kevintv@xxxxxxx>
To: "TECH-ASSIST" <techassist@xxxxxxxxxxxxx>
Sent: Saturday, July 31, 2004 9:04 PM
Subject: [TechAssist] Hitachi VM-4400A camcorder, horizontal lines in pix


> Tape playback is good.  In camera mode there are about 10 lines across
> the picture.  They go down the screen quickly and then slowly stop, and
> then go up the screen quickly.  When the lines stop briefly I can see
> that the lines look like part of the video is shifted over to the right.
> On a 31" TV the lines are about 1/2" wide and 2 inches apart.  If this
> camcorder worked on AC I would say that caps in the P/S are bad; but
> this camcorder works on DC of course.  As I was typing this email, there
> are now twice as many lines as before, so my problem is getting worse.
> Now every second also line has a bluish tinge to it.  Does this sound
> like bad caps?  Thanks.
>
> Kevin Wilks
> Kevin's TV & Video Repair
> Penticton BC Canada
> kevintv@xxxxxxx
>
>
>
>
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