[TechAssist] Re: *Two of us need help*Sanyo DS27630 shorting horz output
- From: "Robert Orr" <rrobor@xxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Mon, 13 May 2002 11:39:48 +0000
From Rob
I may be out of line here cos Im at the other side of the globe, but we got
a Sanyo that does just that and the cause is a 47K feeding the opto in the
power supply, this fault is a you got to know or else as it randomly goes
open, the odd time it will be high, The B+ goes up then the horizontal fails
r rrobor@xxxxxxxxxxx
>From: "Tech Repair CD support" <support@xxxxxxxxxxxxxxx>
>Reply-To: techassist@xxxxxxxxxxxxx
>To: <techassist@xxxxxxxxxxxxx>
>Subject: [TechAssist] Re: *Two of us need help*Sanyo DS27630 shorting horz
>output
>Date: Sun, 12 May 2002 11:13:00 -0400
>
>
>Shaun
>I really would like to know what you find out.. I have a similar set, same
>parts
>gone, but it looks like horizontal freq is way off and I get a buzzing from
>the
>PCB. Replaced the 1µ cap, worked a few hours just fine and hor freq and
>buzzing is
>back. I probably haven't left it on long enough to take the HOT out again.
>I hope we get these fixed.
>Jeff
>FAX 717-564-4952
>Intrepid Video & Electronics
>501 Luther Rd
>Harrisburg PA 17111-2055
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>----- Original Message -----
>From: "Shaun" <ssroark@xxxxxxxx>
>To: <techassist@xxxxxxxxxxxxx>
>Sent: Saturday, May 11, 2002 11:32 AM
>Subject: [TechAssist] Sanyo DS27630 shorting horz output
>
>
> >
> > This Sanyo DS27630 came in with a shorted horz. output and R608 and R610
> > burned and open. When all parts replaced unit played for about 1 hour
>then
> > shorted the horz. output again and blew the fuse this time. I replaced
>it
> > again and checked again for and cold solder joints and measured the base
>of
> > the horz. output (D1555) and it was (-0.03vdc) and after about
>10
> > minutes it was starting to get hot to the touch. I do not have a
>schematic
> > so I am shooting in the dark. I also replaced the 1 uf 160 cap off of
>the
> > horz. driver transformer. Any help would really br great.
> >
> > Shaun
> > Advanced Electronics
> > Fort Morgan, CO 80701
> > (970)867-3124
> > ssroark@xxxxxxxx
> >
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