[TechAssist] Re: Samsung TV - TXE2749 - KCT52A - EPROM Question (FIXED)
- From: "jonas miglinas" <miglinasj@xxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Mon, 4 Apr 2005 18:35:32 -0500
Hello David,
I read again your original thread, and saw that Eric Manuel suggested to
replace C816 1000uf/25v (thanks Eric). I replaced it and VOILA, set fired
up. I had esr'd it originally and it was ok, the value was at 945 and I
thought it was close enough. So I dusted off my Sprague Tel-Ohmike and
checked it under a load, and sure enough, it craps out at about 10.5v. I
replaced all the original ic's back into the set and has been running as it
should for three hours now.
I saw that you had changed that cap also, may want to check it again. If
still no 12v, unsolder pin 1 of IC 853 and see if the 12v comes up. I found
originally a 100uf/16v(that is tied inton this IC) down to about 40uf (damn,
I don't remember the location #, but it's in front of IC 853). Let me know
if you need the location #.
Jonas Miglinas
Miglinas TV
Chicago
----- Original Message -----
From: "jonas miglinas" <miglinasj@xxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Sunday, April 03, 2005 3:10 PM
Subject: [TechAssist] Re: Samsung TV - TXE2749 - KCT52A - EPROM Question
> Hello David,
>
> I am experiencing the exact same problem. No start because the 12v and 5v
> supplies are missing. Have changed IC 852 and HC 802?(not at the office
and
> not sure of the numbers). When I take out either one of these the 12v
comes
> back. Decided to check the micro, and saw the VDD at .6v at standby.
> Unsoldered, and the 5v came up. I have a spare chassis I saved that came
> with a brocken crt and board, and swapped out the the micro. Set came on
at
> once and I thought I had it. I turned the set off and on about 5-6 times,
> unplugged it, yep you guessed it, same thing.
> Worked on this set about three hours saturday without a schematic and
> decided to search the Tech Assist archives when I ran across your thread.
I
> have to exchange a couple of Thomson HD sets tomorrow(crt's not available)
> so I won't be able to attack this set till Tuesday.
> Of course I'll let you know what I find.
> Client doesn't want to spend more than $100 so I won't spend too much more
> time, unless this gets my goat.
> Maybe there is somethig in Winstips for this model, or these models which
> should be close:
> TXE2545
> TXE2546
> TXE2549
> TXE2745
> TXE2746
>
> Jonas Miglinas
> Miglinas TV
> Chicago
>
> ----- Original Message -----
> From: "David Lessard" <mr_fixit@xxxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Sunday, April 03, 2005 11:28 AM
> Subject: [TechAssist] Re: Samsung TV - TXE2749 - KCT52A - EPROM Question
>
>
> > Jonas,
> >
> > Are you experiencing the same problem I am with this TV? Please let me
> > know, perhaps between the two of us we can figure this out!
> >
> > David Lessard
> > Mr_fixit@xxxxxxxxxxxx
> > Alexandria, Ontario, Canada
> >
> > -----Original Message-----
> > From: techassist-bounce@xxxxxxxxxxxxx
> > [mailto:techassist-bounce@xxxxxxxxxxxxx] On Behalf Of Eric Manuel
> > Sent: Sunday, April 03, 2005 9:39 AM
> > To: techassist@xxxxxxxxxxxxx
> > Subject: [TechAssist] Re: Samsung TV - TXE2749 - KCT52A - EPROM Question
> >
> > Hi Jonas put an eeprom from a rca set then plug the tv in leave it for 3
> >
> > or 4 minutes to give the micro time to write the eeprom.Works for
> > me..Eric
> >
> >
> > Eric
> > E M Electronics
> > Deer Lake Nfld
> > Canada
> > tvman@xxxxxxxxxxxxxxx
> >
> > jonas miglinas wrote:
> > > Hello David,
> > >
> > > Did the eeprom switch work? I just came across the same model as yours
> > and
> > > was wondering if you gave up on it?
> > >
> > > Jonas Miglinas
> > > Miglinas TV
> > > Chicago
> > > ----- Original Message -----
> > > From: "Eric Manuel" <tvman@xxxxxxxxxxxxxxx>
> > > To: <techassist@xxxxxxxxxxxxx>
> > > Sent: Tuesday, March 29, 2005 7:42 AM
> > > Subject: [TechAssist] Re: Samsung TV - TXE2749 - KCT52A - EPROM
> > Question
> > >
> > >
> > >
> > >>Hi David you can put in an Eeprom from a rca tv and it should work as
> > >>long as the micro is ok.All the samsung eeprom I
> > >>seen was blank as the settings are stored in the micro
> > >>
> > >>
> > >> Eric
> > >>E M Electronics
> > >>Deer Lake Nfld
> > >>Canada
> > >>tvman@xxxxxxxxxxxxxxx
> > >>
> > >>David wrote:
> > >>
> > >>>What are the symptoms of a defective EEPROM on this chassis? No
> > startup?
> > >>>With the EPROM removed should I see mirco data activity?
> > >>>
> > >>>David Lessard
> > >>>Mr_fixit@xxxxxxxxxxxx
> > >>>Alexandria, Ontario, Canada
> > >>>
> > >>>
> > >>
> > >>----------------------------------------------------------------------
> > ----
> > >
> > > ---
> > >
> > >>>This Email List is Public. Remove:
> > http://www.tech-assist.org/remove.htm
> > >>>Lost Password: http://www.tech-assist.org and select "Login
> > Problems?".
> > >>>Email Archives: //www.freelists.org/archives/techassist/
> > >>>
> > >>
> > >>----------------------------------------------------------------------
> > ----
> > >
> > > ---
> > >
> > >>This Email List is Public. Remove:
> > http://www.tech-assist.org/remove.htm
> > >>Lost Password: http://www.tech-assist.org and select "Login
> > Problems?".
> > >>Email Archives: //www.freelists.org/archives/techassist/
> > >>
> > >
> > >
> > >
> > ------------------------------------------------------------------------
> > -----
> > > This Email List is Public. Remove:
> > http://www.tech-assist.org/remove.htm
> > > Lost Password: http://www.tech-assist.org and select "Login
> > Problems?".
> > > Email Archives: //www.freelists.org/archives/techassist/
> > >
> > ------------------------------------------------------------------------
> > -----
> > This Email List is Public. Remove: http://www.tech-assist.org/remove.htm
> > Lost Password: http://www.tech-assist.org and select "Login Problems?".
> > Email Archives: //www.freelists.org/archives/techassist/
> >
>
> --------------------------------------------------------------------------
> ---
> > This Email List is Public. Remove: http://www.tech-assist.org/remove.htm
> > Lost Password: http://www.tech-assist.org and select "Login Problems?".
> > Email Archives: //www.freelists.org/archives/techassist/
> >
>
> --------------------------------------------------------------------------
---
> This Email List is Public. Remove: http://www.tech-assist.org/remove.htm
> Lost Password: http://www.tech-assist.org and select "Login Problems?".
> Email Archives: //www.freelists.org/archives/techassist/
-----------------------------------------------------------------------------
This Email List is Public. Remove: http://www.tech-assist.org/remove.htm
Lost Password: http://www.tech-assist.org and select "Login Problems?".
Email Archives: //www.freelists.org/archives/techassist/
Other related posts:
