[TechAssist] Re: Zenith SM2727RK - UPDATE
- From: "TechAssist Admin." <techassist@xxxxxxxxxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Wed, 17 Oct 2001 23:31:20 -0500
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
sales@xxxxxxxxxxxxxxxxxxxx
Fax: 209-882-9602
TechAssist Administration
http://tech-assist.org
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(PLEASE include previous correspondence
if replying to this email!!)
----- 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
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