[TechAssist] Re: Sharp 1987, 25"TV, model 25MC157, shuts off.
- From: Eric Manuel <tvman@xxxxxxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Thu, 18 Dec 2003 20:09:42 -0330
Hi Kevin check the IC2601 Photo coupler may be shorted pins 3&4 Eric
Eric Manuel
Deer Lake Nfld
Canada
armando guerra wrote:
>
> Most of the time (because of its age) the problems are loose connections
> around
> the hot and the driver transformer.Another common failure on this sets was
> IC701.Its a 7pin reg.
> Its been a long time and therefore,I can't remember the part #.Usually,this
> will
> take care of the problem.
> Mando
> Birdie's Tv & Electronics
> Casa Grande, AZ
>
> Kevin wrote:
>
> > This set was in another shop for dead. Set was repaired and worked fine
> > in the shop, but in the home it only lasted 2-3 hours and then shut off
> > by it self. When I tested it in the home the set came on for about 30
> > seconds and then went into shutdown. When the power button is pressed
> > the relay clicks off and on. Set is a console model and up 1 flight of
> > stairs, so I pulled the chassis and took it back to my shop. Found some
> > bad connections and a bad cap in the vertical section. The P/S looks
> > very simple as does the deflection circuits. The signal circuit is on a
> > large circuit board on the side of the console TV. Anybody have
> > experience with this model of Sharp? I'm hoping I don't have to bring
> > the whole set in. TIA.
> >
> > Kevin Wilks
> > Kevin's TV & Video Repair
> > Penticton BC Canada
> > kevintv@xxxxxxx
> >
> >
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