HOW TO DOWNLOAD UPDATES AUTOMATICALLY FOR WINDOWS XP

     Updates for windows can be downloaded automatically.  But there is no update for Win XP-Sp-2.  You have to download XP-3 update version; [CD version from Microsoft website], and  burn it to a CD.  After installing Win Xp-2. Just insert this CD to your ROM, and it will automatically upgrade your present XP-2 to Xp-3. The update process may take 30 to 40 minutes.
When you update the XP-2 Version to XP-3, Be sure that the system is dosconnected from internet. Switch OFF the Modem, if it is external one, or disconnect the LAN cable from the system.

     The trick to get automatic update is a crucial.  Just Right Click  my computer Icon. Click ‘Properties’. Click ‘Automatic Updates’. Check the box “Notify me, but not automatically download or install them”. (Normally automatic update option will be checked). Click apply, and then press OK.

Connect the system to Internet now.

Hereafter comes the play begins.

     After some time, within 5 minutes or so, you will see an yellow triangle on the right side of the taskbar of your window, stating that, ‘Updates are available’.  Click the icon.  Nothing will happen.  Updates to your present operating system will start on.  You will get a message, after this first update download,  to install the downloded software.  It is only an  “initialization”.  Don’t mind this.  Let it installed.  Let it be installed.  Otherwise, the future updates will not be available.

     After this, some time later, an icon [yellow triangle one] again will appear on the task bar ,reminds you, ‘Updates are available’.  Allow these updates to download .

After downloading these updates, it will ask you to install the downloaded updates.   BE CARE at this point.  Just look on the table, to which updates are going to be installed.  There will be so many boxes, clicked “Checked’.  Select the ticked box starting with  “ Windows Genuine “.  Click on it, and uncheck it [OFF].  Click continue. A box will be now displayed; stats that, you won't get this update downloaded. Click OK. This part of the automatic update should be omitted.  The rest of the updates will start ot download.  For each time after some download, you will be asked to install the downlaoded software.  Do it.  Here you have won.

All up-to-date updates will come hereafter.  You have to allow them to install.  That is all. To get it fully updated till time, will take so may steps of downloads and installations.

If you have any doubt.  Keep Indian Standard Time and contact me

But, you must have updated your present Win Xp-2 to Win Xp-3, because, Updates to Win Xp-3 only is available now.

TAKES TIME TO GET PICTURE OR PICTURE APPEARS SLOWLY, TAKES 10 MINUTES OR SO TO BE GOOD

The picture tube base socket to the TV should be suspected.  If the Focus pin [pin number – 1] of the picture tube wont gets sufficient voltage due to corrosion of the contacts inside the base socket, this fault may happen.  Replace the picture tube base socket.  This socket can be located on the base card of the picture tube.

RAINBOW COLORS ON SCREEN; PICTURE TUBE BASED TELEVISIONS

This fault appears on picture tube based televisions are due to low EHT [Extra High Tension} voltage from the LOT [Line Output Transformer] or [Fly back Transformer]. There are mainly two cusses for this.  The first one is with the high voltage rectifying diodes.  These diodes are within the LOT itself, and will be sealed; and no replacement can be done. If the fault is with these diodes/diode; there is no other way than replacing the LOT as a unit.

The second possibility is with the free wheeling capacitors.  Replace the capacitors connected to the collector of the horizontal output transistor to negative ground point.  There will be a capacitor with high voltage ratings.  Replace the yolk return capacitor too.  If these do not help, replace the Line Output Transformer.

OUT OF FOCUS PICTURE; PICTURE TUBE BASED TvS

 If picture seems to be out of focus, try to adjust  focus control on the Line Output Transformer [LOT] and try to make it right.  If it does not help you, replace the picture tube base socket.  This socket can be located at the base card of the picture tube. If you fail to adjust the focus, by adjusting the focus pot control at the LOT; the LOT is defective, and should be replaced with same type and number.  Check the main secondary voltage [which will come to the range of 95VDC to 135VDC].  If this voltage is not sufficient enough, this fault may occur.  If this voltage is found very low, [refer to the schematic diagram of the set, to get the exact voltage level], replace the smoothing capacitor for this voltage.  This capacitor may vary to a value of 220MFD 160VDC to 330MFD 160VDC.

NO PICTURE; SOUND OUTPUT OK; PICTURE TUBE BASED COLOR TELEVISIONS.

     This is a common fault to most of the picture tube based televisions, irrespective of its brand and model number.  There are several reasons for this fault, and 90% of them are related with its video output card, usually located at the neck of the picture tube. Plugged on to its neck.  This card can be pulled out from the neck of the picture tube to repair.  Pull it strait back, no sideways movement should be done, while pulling it out, as it may cause damage to the connection pins of the picture tube.

     If you see a color predominant screen that is, if the screen shows excessive blue, red or green color with nice white lines all across the screen, lying parallel to each other and inch apart or so.

     Check which color is predominant?  Just assume the blue color predominant screen with nice slanting line across the entire screen, about an inch apart to each other.

     The first thing to do is to measure the voltage at the blue cathode of the picture tube.  You can do this check, while the set is On.  Set a multimeter to measure DC voltage range 500V or above.  Check the voltage at the blue cathode.  You can see markings on the card Bk, Rk & Gk.  All of these are the three cathode connection points.  Among the, Bk is now out discussion point now.

     Understand that, the cathodes of a vacuum tube, is negatively biased, that is, if the voltage of the cathode will go down with respect to its screen voltage, the emission of that cathode will increase, and vice versa.  In our case, now, the voltage at the Bk will be less.  Check the voltage of the other two cathode points for reference.  A slight voltage difference, says about 3 volts or so, is Ok, but should never be too below to this.

     Here one thing to note is, that the voltages of the other two cathodes are high, and the voltage to the blue cathode only is very low.  This is the reason you see a high intensity blue screen.  It were happened to one among other cathodes, say if the voltage at RK is low, you will see a high intensity red screen, and if voltage at Gk is very low, you will see a high intensity green screen.  Of course all this screen will have lines as said earlier [retrace lines] will be there.

Let us come to the reasons for this fault.

    Take the case of blue predominant screen as stated earlier.  It is sure that the voltage at the blue cathode will be low in this case.  That is, the blue cathode pin of the picture tube does not get proper voltage to cut off.

     Check the solder terminal of the picture tube base socket pin of blue cathode first.  It is advised to resolder all the crt base connecting socket, soldered on the CRt base board [video output board], by applying a little more solder, because, these solder terminals will heat up while TV works.  Repeated heating and cooling may make the solder terminals to get loose, and no proper connection.

     If the solder terminals are OK, there is blue predominant screen, check this resistor connected to the blue video output transistor for value developed or loose soldered.  Check the voltage across the tow terminals of this resistor.  This is the collector current limiting resistor, and will be of a resistance value between 10 KOhms to 15Kohms/2W.  If the value of this resistor had developed high, the voltage at the Bk will be low.

If the resistor is found OK, and still the voltage at the Bk is less, than the other two cathodes, check the video output transistor [blue] for Collector to Emitter short.  Replace it is advised.

FAULT FINDING OF SAMSUNG LA26 R71 [ 26” LCD TV ]

Fault Finding of SMPS [Main Power Regulator Board]

Part-3

12 VOLT AND 13 VOLT POWER SUPPLY OUTPUTS ARE MISSING

DM853 [FCH 10A10], CM 856 [1500 MFD/25V]..

12 VOLT POWER SUPPLY OUTPUT IS MISSING.

FM 851 [KRG030], ICM 853 [KIA 278R12P1], RM 858 [10K OHMS], CM 858 [470 MFD/25V].

5 VOLT POWER SUPPLY OUTPUT IS MISSING.

ICM 852 [MC 33167T], DM 854 [EN 220A], CM 861 [2200 MFD/10V], DZM 853 [5V6-Z ZENER DIODE SHORT], DZM 852 [WP], QM 851 [ZG].

24 VOLT POWER SUPPLY OUTPUT IS MISSING.

DM 851 [EN 220A], CM 851 [1500 MFD/35V], DZM 853 [5V6-Z ZENER DIODE SHORT], DZM 852 [WP], CM 852 [1500 MFD/35V].

ALL OUTPUT POWER SUPPLY VOLTAGES ARE LESS THAN NORMAL, AND S.B POWER SUPPLY OTPUT IS OK.

PS 803S [WK 707], ZDTM 851 [KIA431A], ZDM 803 [5V1-Z ZENER DIODE], QM 802 [ZHOG], QM 803 [ZHOG], QM 803 [ZHOG], DM 803 [0E2 OHMS/2W], ICM 801S [F9222L].

ALL POWER SUPPLY VOLTAGES ARE EXCESS THAN NOMRAL, AND S.B POWER SUPPLY OUTPUT IS OK.

DZ 852 [WS], DZS 851 [WB], DS 852 [B31D], RS 855 [100 OHMS], QS 852 [ZG, RS 854 [100 OHMS], PS 802S [WK 707], RS 810 [4.7 OHMS], PS 803S [WK 707], RM 857 [750 OHMS], ZDTM 851 [KIA 431A], RM 855 [2.4 K OHMS], RM 814 [3.3K OHMS], RM 813 [100K OHMS], DZM 803 [5V1-Z ZENER DIODE].

Continued - part 4