[TechAssist] Re: Need VS-4544 schematic

BTW,the flyback I replaced in  this VS50502 was
334P246060

Peggs

At 08:50 PM 1/23/06, Tri-County Tv wrote:
>Paul,
>         My resistor goes to the cathode of D5A08 anode to cathode of D5A21
>anode to ground. Sounds like your vS-4545 might be close. Can you copy that
>section and the high voltage , power supply sections also. I assume you have
>this schematic in paper form. I did check both diodes out of circuit and no
>leakage. The other end of my resistor goes to the ACL line which goes to 100
>ohm resistor which the goes to pin 8 of the flyback. I really appreciate
>your help on this set as the customer wants it fixed , I think for
>sentimental reasons.
>Tom Berger
>Tri-County TV
>Robbinsville
>North Carolina 28771
>Ph--828-479-6043
>Fax-828-479-4868
>(tricountytv@xxxxxxxxxxxxx)
>----- Original Message -----
>From: "Paul" <dntwntv@xxxxxxxxxxxxx>
>To: <techassist@xxxxxxxxxxxxx>
>Sent: Monday, January 23, 2006 9:21 PM
>Subject: [TechAssist] Re: Need VS-4544 schematic
>
>
> > Tom
> >    The print does not give a value for R5A28 in the VS4544. It does give a
> > value of 39K for a VS 4545. The other side of that resistor goes to
> > cathode of  D5A22. The anode of that diode goes to cathode of D5A21 anode
> > to ground. That diode may be shorted. I can copy this section and send it
> > to you if you want.
> > Paul
> >
> > Tri-County Tv <tricountytv@xxxxxxxxxxxxx> wrote:
> >  Jeff,
> > I have scoped the H.O.T collector and looks distorted , driver
> > transistor output is clean , If I keep turning the set on , R5A28 starts
> > to
> > burn, with is off the ACL line from flyback pin# 8 . I am not sure of the
> > value of this resistor. It now measures about 65K. If pin 8 is the low
> > side
> > of the internal HV diodes , then maybe I am dealing with a bad fly. I
> > think
> > the burning of R5A28 should be clear clue as to where the problem is. I am
> > still working without a schematic.
> > Tom Berger
> > Tri-County TV
> > Robbinsville
> > North Carolina 28771
> > Ph--828-479-6043
> > Fax-828-479-4868
> > (tricountytv@xxxxxxxxxxxxx)
> > ----- Original Message -----
> > From: "Shoreline Electronics"
> > To:
> > Sent: Monday, January 23, 2006 12:27 PM
> > Subject: [TechAssist] Re: Need VS-4544 schematic
> >
> >> Can you scope the collector at startup and see if the pulse is clean or
> >> distorted?
> >>
> >> Keep in mind , these sets have a discrete Horizontal Output section and a
> >> HV
> >> section.
> >>
> >> ==========================
> >> Jeff Stielau
> >> Shoreline Electronics Repair
> >> 344 East Main Street
> >> Clinton,CT 06413
> >> 860-399-1861
> >> 860-664-3535 (fax)
> >> jstielau@xxxxxxxx
> >> ========================
> >>
> >> ----- Original Message -----
> >> From: "Tri-County Tv"
> >> To:
> >> Sent: Monday, January 23, 2006 12:18 PM
> >> Subject: [TechAssist] Need VS-4544 schematic
> >>
> >>
> >>> Hello everybody,
> >>> I am in desperate need for a schematic and any
> >>> repair tips for this old Mitsubishi Big screen. It shuts down at turn
> >>> on,
> >>> and draws heavy current from H.O.T I suspect the flyback but it rings
> >>> good
> >>> so maybe a shorted internal high voltage diode. I have a feeling this
> >>> will
> >>> be very hard to find. I am ready to put a match to this dog! I think the
> >>> chassis is VZ3 Any help would be greatly appreciated.
> >>> Thomas Berger
> >>> Tri-County TV
> >>> Robbinsville
> >>> North Carolina 28771
> >>> Ph--828-479-6043
> >>> Fax-828-479-4868
> >>> (tricountytv@xxxxxxxxxxxxx)
> >>> 
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> >
> > Paul ,B
> > Central TV&Video
> > 911W Grand Ave
> > Grover Beach Ca.
> > (805)481-8084
> >
> > 
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