[TechAssist] Re: Sharp 25R-M100

  • From: "Ernest Brewley" <radiodok@xxxxxxx>
  • To: techassist@xxxxxxxxxxxxx
  • Date: Sat, 02 Feb 2002 05:21:12 -0800

Sound like you have a bad timing capacitor

Brewley
Radio Doctor Services


>From: tvdoctors@xxxxxxxxxxxxx
>Reply-To: techassist@xxxxxxxxxxxxx
>To: techassist@xxxxxxxxxxxxx
>Subject: [TechAssist] Re: Sharp 25R-M100
>Date: 01 Feb 2002 17:53:47 -0800
>
>Update;   I found out by disconnecting the yoke return cap (C612) the unit 
>would power up with Vert. line.    B+ sets at around 112 volts. Yoke return 
>Cap (C612) is good, (measured and replaced) and the yoke is not shorted, ( 
>Tried on another Sharp with same CRT and yoke). Unit shuts down within 3 
>seconds if vert. yoke winding is unplugged which I think this is normal. 
>Overall, I can get the unit to power on with a line up and down, but as 
>soon as I connect the yoke return cap it won't start.     With this added 
>info, does this give anyone a clue to what else I should look for?        
>As listed below, Fly and regulator IC replaced already.   Neil
>
> > ** Original Subject: RE: [TechAssist] Sharp 25R-M100
> > ** Original Sender: tvdoctors@xxxxxxxxxxxxx
> > ** Original Date: Fri,  1 Feb 2002 14:26:42 -0500 (EST)
>
> > ** Original Message follows...
>
> >
> > No print on this unit.  Replaced flyback transformer and regulator 
>IC701, but still won't run. Tries to come up at first plug in but goes to 
>immediate shutdown. Secondary power supply voltages are   154volts, 15 
>volts, and 11 volts. Can anyone shed some light on this one, Thanks, Neil
> >
> > TV Doctors    108 W. Main St. Monroe,Wa. 98272    360-794-6469
> >
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> >** --------- End Original Message ----------- **
>
> >
>
>TV Doctors    108 W. Main St. Monroe,Wa. 98272    360-794-6469
>
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