[TechAssist] Re: Zenith SM2727RK - hit by lightning (dead set)
- From: "Chaz" <chaz@xxxxxxxxxxx>
- To: "fantaj" <fantaj@xxxxxxx>, techassist@xxxxxxxxxxxxx
- Date: Wed, 17 Oct 2001 19:12:17 -0500
Thank you for your input. I also recieved Fuzz's info file detailing this idea
-
thanks to Doug Keller.
Chaz
-------
>
> You can change how the crt filaments gets its voltage by doing a wire wrap
> of the IHVT and cutting the old leads.
> it does work and should also explain to customer you saved the crt.
> fuzzzzzzz
> ----- Original Message -----
> From: <gulftech@xxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Cc: <techassist@xxxxxxxxxxxxx>
> Sent: Wednesday, October 17, 2001 9:37 AM
> Subject: [TechAssist] Re: Zenith SM2727RK - hit by lightning (dead set)
>
>
>
> Chaz,
>
> I had an 8th grade English teacher with a sign on the chalkboard which
> read: "Fail now. Avoid the June rush." I will adapt that to say to you:
> Bail now. Avoid losing your shirt.
>
> There is every indication that the crt has been giving problems for some
> time ("The video would go out (white screen) and after powering off to
> cool down, the video would appear again.") The customer MAY have been
> hit by lightning, but a better chance the crt took out the p/s. At any
> rate, if you fix the chassis, it will come back to bite you.
>
>
> Ken Smith
> Gulf Technical Services
> 3034 Gulf Breeze Parkway
> Gulf Breeze, FL 32561
> 850-934-8324 (Voice) 850-932-0819 (Fax)
>
> ---------------------
>
> On Tue, 16 Oct 2001 23:12:10 -0500 "Chaz" <chaz@xxxxxxxxxxx> writes:
> >
> > Late yesterday, I recieved a hi-fi Zenith TV that had been hit with
> > lightning
> > (SM2727RK). I checked everything on Tech- Assist, even for close
> > numbers,
> > and found nothing.
> >
> > Visual inspection shows blown FX3401 fuse, and what looks like the
> > p.s.
> > bridge of diodes (burnt) close to the ICX3431 (I believe) STR????
> > regulator. I
> > can't read anything on these diodes nor make out well the PCB
> > location
> > descripts. I also suspect that the STR4400 (not able to read well
> > either) volt-
> > reg is shorted - ohming it says so anyway. Without knowing what
> > these
> > parts are, and resourcing cost of regulator, I can't do much with it
> > right now
> > w/o chancing more part damage. Customer wants it fixed but also is
> > a little
> > short on budget. Anyone have any ideas, schem, or tips on this.
> > Part
> > descriptions would be a big help to start with.
> >
> > I'm not sure of the chassis number for this but, the only label I
> > found in the
> > unit shows SM2727Rk EU-593 F49702 (numbers under each other).
> >
> > Customer had said before it got hit with lightning, that the video
> > would go out
> > (white screen) and after powering off to cool down, the video would
> > appear
> > again. He said he "just lived with it until this happened".
> >
> > Thanks in advance.
> > Chaz
> > Help make your TechAssist online repair tips
> > database better! Submit your fixes here:
> > http://www.circuitwork.com/techassist/tip/#tips
> > To unsubscribe write to:
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> > with unsubscribe in the subject line.
>
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