[TechAssist] Re: *Two of us need help*Sanyo DS27630 shorting horz output
- From: gulftech@xxxxxxxx
- To: techassist@xxxxxxxxxxxxx
- Date: Sun, 12 May 2002 18:40:16 -0500
Jeff & Shaun,
Just fixed a Fisher PC3527 with a similar problem to at least Jeff.
Found a couple of bad caps in hor drive ckt bad (including C428 a@160),
but still horizontal frequency way off. Fix was C401, 22ufd, 16v cap.
Could see how this would take out the HOT.
HTH,
Ken Smith
Gulf Technical Services
3034 Gulf Breeze Parkway
Gulf Breeze, FL 32563
850-934-8324 (Voice) 850-932-0819 (Fax)
On Sun, 12 May 2002 11:13:00 -0400 "Tech Repair CD support"
<support@xxxxxxxxxxxxxxx> writes:
>
> 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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