[TechAssist] Re: Magnavox CP4580 dead-no click
- From: "al m" <ampm@xxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Wed, 6 Feb 2002 08:08:40 -0600
did you check r438 it's a 680k resistor that supplies voltage to the on off
circuit.seen this before
al marquardt
ampm@xxxxxxx
----- Original Message -----
From: "Webster TV" <webstertv@xxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Tuesday, February 05, 2002 9:44 AM
Subject: [TechAssist] Re: Magnavox CP4580 dead-no click
>
> Jeff,
> Check C432 this capacitor causes all kinds of different problems in these
> sets, from horiz.& vert sync problems, to high B plus voltage, to not
being
> able to turn unit off. I haven't had one with your symptoms, but sure this
> capacitor could cause dead set symptoms.
>
> Dan Webster
> Webster's TV
> Shullsburg, Wi
> ----- Original Message -----
> From: Jeff Dougherty <jeff@xxxxxxxxxxxxxxxxxx>
> To: Techsonline <techassist@xxxxxxxxxxxxx>
> Sent: Monday, February 04, 2002 8:40 PM
> Subject: [TechAssist] Magnavox CP4580 dead-no click
>
>
> >
> > Chassis 25S107, no date on unit, but probably early 90's
> > Originally had shorted HOT(610597) and open picofuse F401.
> > R432, R435 and 10W resistors are OK.
> > Unit is still dead, nothing from front panel.
> > On REG, I have 170v at supply, now, but only about 16vdc on output. This
> is
> > a new IC.
> > I believe this is where the problem lies, but I am w/o a schematic.
> > Can anyone give me any other ideas what to check?
> > Thank you.
> > Jeff
> >
> > FAX 1-413-280-0677
> > Jeff Dougherty
> > Intrepid Video & Electronics
> > 501 Luther Rd
> > Harrisburg, PA 17111
> > 717-909-8844
> > VCR tips, electronics info & general interest.
> > www.intrepid-video.com www.tech-repair.net www.thetoolcaddy.com
> >
> >
> >
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