[TechAssist] Re: Zenith SM2727RK - UPDATE
- From: "Chaz" <chaz@xxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx,"AL LEATHERMAN" <alleathe@xxxxxxxxxxxxx>
- Date: Thu, 18 Oct 2001 00:35:05 -0500
Got them, thanks.
No problem and understood <sm>. Thanks very much for the help again.
NOTE to Clint:
File(s) were sent direct to me <sm>.
Chaz
-------
>
> Al, if you were trying to post an attached file, the list
> strips all attachments.
> -Clint
>
> God Bless Us All
> Clint Hamilton, Owner
> http://OrpheusComputing.com
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>
> ----- Original Message -----
> From: "AL LEATHERMAN" <alleathe@xxxxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Wednesday, October 17, 2001 11:15 PM
> Subject: [TechAssist] Re: Zenith SM2727RK - UPDATE
>
>
>
> chasm,
> Here is the scan. Good luck. Do not mention my hand drawn
> stuff on the
> public part. al
>
> May God give us strength
> Al's TV
> 224 Rt. 46
> Mine Hill, NJ. 07803
> 973-361-5796
> alleathe@xxxxxxxxxxxxx
> ----- Original Message -----
> From: "Chaz" <chaz@xxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Wednesday, October 17, 2001 11:31 PM
> Subject: [TechAssist] Zenith SM2727RK - UPDATE
>
>
> >
> > For all those following this thread: recently, I did a
> little more
> cleaning of the
> > PCB to get a better viewing of previously described burnt
> parts. After
> doing
> > so, discovered that the diodes - CR3431 to CR3434 -
> weren't, afterall,
> burnt.
> > Just tarnished badly by the explosion from a TO-92
> transistor - Q3431. My
> > diode tester says they are bad.
> >
> > So, what I need is at least a partial schem of the section
> showing the
> above
> > diodes, Q3431, ICX3431, and burnt resistor R3432. I will
> attempt a repair
> > with replacement of these parts, depending on cost/avail.
> of STR53041,
> > without CRT connected. If the board then functions, it
> gets my other CRT
> > with it and hopefully returns to service. If not, this
> project will be
> dumped.
> >
> > Thanks to everyone who has offered suggestions so far
> and/or further
> > continues to offer help.
> >
> > Thanks in advance.
> > Chaz
> > -------
> >
> > >
> > > 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:
> > > techassist-request@xxxxxxxxxxxxx
> > > with unsubscribe in the subject line.
> > >
> > >
> >
> >
> > Help make your TechAssist online repair tips
> > database better! Submit your fixes here:
> > http://www.circuitwork.com/techassist/tip/#tips
> > To unsubscribe write to:
> > techassist-request@xxxxxxxxxxxxx
> > with unsubscribe in the subject line.
>
> Help make your TechAssist online repair tips
> database better! Submit your fixes here:
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>
>
> Help make your TechAssist online repair tips
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>
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