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

  • From: "James M. Knoble" <jmk1938@xxxxxxxxxx>
  • To: techassist@xxxxxxxxxxxxx
  • Date: Sat, 07 Jun 2003 08:47:58 -0400

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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James M. Knoble
2303 Pleasant Valley Road
Fairmont, WV 26554

jmk1938@xxxxxxxxxx

Phone  304-366-1938

Fax      304-367-8965   


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