[TechAssist] Re: Sanyo DS27630 shorting horz output
- From: "Perry Hill Electronics Service" <phes1@xxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Sat, 11 May 2002 22:44:10 -0700
All H output transistors are not created equal. Sure they all cross to
ECG2331. The operating parameters and in particular the resistor value
between the base and emmitter will be different. I dont recall that
Sanyo ever used a 2SD1555.
I suggest that you use the exact replacement. If that does'nt solve your
problem then come back to this list. Find out if that H.O.T. is really
the right one. I don't know for sure or I would gladly share the info.
Mark Wentowski
Perry Hill Electronics Service
3836 Harrison Rd
Montgomery, AL 36109
Voice: (334) 279-5622
Fax: (334) 273-9050
Email: phes1@xxxxxxxxxxxxx
----- Original Message -----
From: Shaun <ssroark@xxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Saturday, May 11, 2002 7:47 PM
Subject: [TechAssist] Re: Sanyo DS27630 shorting horz output
>
> The b+ is 128vdc which I assume is close because it has a STR30130
> regulator.
>
> Shaun
> Advanced Electronics
> Fort Morgan, CO 80701
> (970)867-3124
> ssroark@xxxxxxxx
> ----- Original Message -----
> From: "Frank Luu" <fkluu@xxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Saturday, May 11, 2002 10:40 AM
> Subject: [TechAssist] Re: Sanyo DS27630 shorting horz output
>
>
> >
> >
> > What is the B+ voltage? If it too high it will kill
> > HOT again.
> > Frank
> >
> > --- Shaun <ssroark@xxxxxxxx> wrote:
> > >
> > > 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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