[TechAssist] Re: Mitsubishi VS-5074 Has High Voltage, Filament, Hissing Audio, No Picture

  • From: "Damon" <DAMON101@xxxxxxxxxxxxxx>
  • To: <techassist@xxxxxxxxxxxxx>
  • Date: Sat, 7 Jun 2003 08:19:11 -0500

Don't forget to check the yokes for plugs on them, bad connection on vert
line will collapse pix, blank it and leave audio working.

Damon Brunger
Telrad Electronic Services
Ft Wayne, IN 46815

----- Original Message -----
From: "James M. Knoble" <jmk1938@xxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Saturday, June 07, 2003 7:47 AM
Subject: [TechAssist] Re: Mitsubishi VS-5074 Has High Voltage, Filament,
Hissing Audio, No Picture


> Just repaired a VS5017. Vert output IC and B+ resistor from flyback, 1
> ohm  were bad.  Set would still blank video.  HV wire broke at the
> transformer. It was repairable.
>
>
>
> At 08:16 PM 5/28/2003 -0400, you wrote:
> >---------------------------------------------------------------
> >Text pasted from WinSTIPS 2.0
> >http://www.ServiceSoftware.com
> >---------------------------------------------------------------
> >
> >MITSUBISHI   VS5074
> >
> >Video No Go - Has Sound And Hv  (Is Really No Vertical Sweep)
> >
> >Tv Doctor - T.O., Ca
> >
> >Bad Vertical Ic - La7838 & R510 - 1 Ohm Behind Flyback
> >
> >---------------------------------------------------------------
> >
> >MITSUBISHI   VS5074
> >
> >Video    No Vid; Q2h0 Open
> >
> > >From Mitsubishi
> >
> >Over Current Condition Failure.  Apply Following Circuit Change To
Correct.
> >On Foil Side Of Pcb-Signal,  Solder A 1s2471 Diode   Cathode To Base Of
Q2h0
> >And Anode To Emitter.  Located On Pcb-Sign
> >
> >---------------------------------------------------------------
> >
> >MITSUBISHI   VS5074
> >
> >Video    No Raster
> >
> > >From Mitsubishi
> >
> >Check For Open R509 (100 Ohm 1/2w) Res. Located On The G2-Pcb.
> >
> >---------------------------------------------------------------
> >
> >
> >==========================
> >Jeff Stielau
> >Shoreline Electronics Repair
> >344 East Main Street
> >Clinton,CT 06413
> >860-399-1861
> >860-664-3535 (fax)
> >jstielau@xxxxxxxx
> >==========================
> >"If you push something hard enough it will fall over."
> >Fudd's First Law of Opposition - Sir Sidney Fudd
> >
> >
> >----- Original Message -----
> >From: "Nova Service Center" <techassist@xxxxxxxxxx>
> >To: <techassist@xxxxxxxxxxxxx>
> >Sent: Wednesday, May 28, 2003 2:39 PM
> >Subject: [TechAssist] Mitsubishi VS-5074 Has High Voltage, Filament,
Hissing
> >Audio, No Picture
> >
> >
> > > Hi everyone
> > > This big screen TV Model # VS - 5074 when plugged in you can hear a
click.
> >Then when power button pushed you can hear more clicks . Power led stay
on,
> >has high voltage, filament, hissing audio but no picture.The 3 picture
tube
> >does not turn on at all. I checked all the boards for loose connection no
> >change.All the fuses checks ok. I have no service manual. Any suggestion
or
> >history for this tv ? Any help would be appreciated.
> > > Thanks
> > > Nova
> > > 240-632-2994
> > >
>
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>***************************************************************************
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> James M. Knoble
> 2303 Pleasant Valley Road
> Fairmont, WV 26554
>
> jmk1938@xxxxxxxxxx
>
> Phone  304-366-1938
>
> Fax      304-367-8965
>
>
>
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