Re: Philips DVP642 DVD player not starting up

The DVP642 is a divx player and is worth fixing, most DVD players won`t
play divx, most likely power supply problem. find another dvp642 and swap
power supplies very easy, even if you can`t fix it you should keep it, a
very common player easy to find parts for.
"Arfa Daily" <arfa.daily@xxxxxxxxxxxx> wrote in message
news:3RVUe.1950$K5.1329@xxxxxxxxxxxxxxxxxxxxxxx
> "BW" <boneywasawarriorvayayixSPAM@xxxxxxxxxxxxx> wrote in message
> news:YxFUe.20705$I02.1379115@xxxxxxxxxxxxxxxxxxxxxxxx
> > Hi all,
> >
> > I bought a Philips DVP642 DVD player less than an year ago. I had been
> > playing DVDs and CDs nicely till a few days ago. I watched a DVD movie
> > on it last weekend, and after that I wanted to play some mp3s on it on
> > wednesday. When I clicked the eject button on it, it came out of power
> > down mode, and I heard a chirp sound in the speakers and it went back to
> > power down mode again.
> >
> > I tried it a couple of times and got the same reponse. I pulled the plug
> > and let it rest for a while and tried again. Response was same!
> >
> > Does anyone know where to get the service manual for it? Or does anyone
> > have some other tips for me? Except the advice of sending it back to
> > Philips. I would prefer to make it work myself if it is just some
> > configuration setting which needs to be reset.
> >
> > Thanks in advance,
> > /KS
>
> Hmmm.
>
> Lots of advice, but not much of it very helpful.
>
> Almost all of the Philips DVDs that I've ever repaired, irrespective of
> model, have had a similar fault, and this is one of the PSU secondary side
> Schottky diodes short circuit. This may not be the case with your machine,
> and I agree with some of the other posters that, for the most part, DVD
> players are not worth wasting time on, but it's got to be worth five
minutes
> of your time with an ohm meter just in case.
>
> Just a word on safety. Remember that this is a switch mode power supply,
> which is POTENTIALLY LETHAL. Do not check it or work on it live, unless
> doing so on a proper workshop isolation transformer, and even then only
with
> care, and beware of the main smoothing cap on the primary side, remaining
> charged, as it can do on a switcher that's not starting up. Won't kill
you,
> but may result in a smashed board where you involuntarily sling it against
> the wall ... !!
>
> When checking Schottky diodes, remember that they have a significantly
lower
> forward resistance than silicon types, but will still have a virtually
> infinite reverse reading. Any diode that reads low both ways should be
> considered suspect, but confirm that by unplugging the PSU output plug, as
> you can be fooled by reading across the VFD heater.
>
>


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