[TechAssist] Re: "fix" update: tuner? philips/ Mag TS2754, 27B800-7562 shuts down, no vert. IC500...]

  • From: "Adolph Gower" <agower@xxxxxxxxxxxxx>
  • To: <techassist@xxxxxxxxxxxxx>
  • Date: Sun, 22 Dec 2002 04:46:19 -0800

Service mode entry Using the remote transmitter, enter the following
seven-button sequence to activate the service mode; 06-25-96-MENU.  Note:
This sequence must be entered consecutively with out allowing the on screen
display to time out between  entries.

Exit Service Mode
To exit the service test mode procedure enter Service page 1, and press the
volume up on the remote transmitter.
To save the current modification of the register data, disconnect the set
from its AC source.
Adolph Gower
Cordova TV
10275 Old Placerville Rd. #5
Sacramento, Ca. 95827
Source for good used parts.
Ph. (916) 363-6565
Fax (916) 363-7623
----- Original Message -----
From: "Adolph Gower" <agower@xxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Friday, December 20, 2002 7:25 PM
Subject: [TechAssist] Re: "fix" update: tuner? philips/ Mag TS2754,
27B800-7562 shuts down, no vert. IC500...]


>
> You must have service remote to save your changes.
> Adolph Gower
> Cordova TV
> 10275 Old Placerville Rd. #5
> Sacramento, Ca. 95827
> Source for good used parts.
> Ph. (916) 363-6565
> Fax (916) 363-7623
> ----- Original Message -----
> From: "Philip Bader" <tjanphyl@xxxxxxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Friday, December 20, 2002 2:41 PM
> Subject: [TechAssist] Re: "fix" update: tuner? philips/ Mag TS2754,
> 27B800-7562 shuts down, no vert. IC500...]
>
>
> >
> > Entered service mode, copied down all values I found.i did the "default
> > to factory settings". This restored my tuner operation.The vert height
> > was narrow and v. centering needed adjusting. Did that Trouble is, they
> > say to save that page values press "smart" on the remote. I only have
> > the master remote that has no "smart" button. Is there an equiv. button
> > I can save this with? Seems after I doo all this even pulling power
> > (supposedly this saves data) it comes on with the narrow vert hgt again,
> > unsaved.I re read all the info on the disc.help...
> > Phil Bader
> >
> > Philip Bader wrote:
> > >
> > > see thread below: was shutting down,fixed vert,now no tuner op.
> > >
> > > Unsolderd the eeprom chip IC346, powered the set up, and it now works
> > > OK. Note the vertical is a bit narrow, and probably several other
> > > parameters wrong, as the set is working without an EEPROM, so is
working
> > > under "default" settings.At least I know I must reinitialise, or at
> > > worst replace the eeprom.Is it possible, and wise to reinstall the
> > > old,and enter service mode to record the orig. settings for when I
wipe
> > > out  the chip to start over?
> > > Phil Bader
> > >
> > >  Friday, December 20, 2002 11:47 AM
> > > update: tuner? philips/ Mag TS2754, 27B800-7562 shuts
> > > > > down, no vert. IC500...
> > > > >
> > > > > I replaced IC500 (TDA9302H), D409 (483513037094, NTE580) and
> resistor
> > > > > R420 (1 ohm). This restored vertical and stopped shut down. Now,
the
> > > > > tuning is off frequency.I select ststions and may hear a bit of
the
> > > > > audio but sound and pix if off tune. I do have my +33V, +5 and all
> other
> > > > > voltages to tuner (I have the force disc).SCL and SDA have pulse
> > > > > activity.
> > > > > Of course I suspect tuner, but any history on this chassis for
this
> > > > > tuning defect?
> > > > > Phil Bader
> > > > >
> > > > > Philip Bader wrote:
> > > > > >
> > > > > > The usual IC500 solder breaks on pins destroy IC500 (TDA9302H)
and
> Vcc
> > > > > > resistor to fly R420. What exactly is R420 value? 1 or 10 ohms??
> > > > > > Phil Bader
> > > > > > --
> > >
> > > ------------------------------------------
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> > --
> > Philip Bader
> > Jan Phyl TV Inc. (estab. 1976)
> > 3420 Recker Hwy. Winter Haven, Fl. 33880
> > Fax (863) 299-8821
> > email: tjanphyl@xxxxxxxxxxxxxxx
> >
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> >
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