Tip & How-To about Panasonic TXL42S10B 42 HDTVReady LCD TV

Srevice mode

Replacement of ICs:
When Pro4 IC (IC8000) is replaced, NAND FLASH (IC8900) should be also replaced with new one the same time. When NAND FLASH (IC8900) is replaced, Pro4 IC (IC8000) is not necessary to be replaced the same time. After the replacement of IC, SELF CHECK should be done to generate the final KEY data. How to SELF CHECK: While pressing [VOLUME ( - )] button on the main unit, press the MENU button on the remote control for more than 3 seconds. TV will be forced to the factory shipment setting after this SELF CHECK.
USB HDD Recording:
General information:
Digital TV programmes can be recorded in USB HDD.
A One-to-One key generated in A-board by SELF CHECK binds TV and USB-HDD for communication. That key is only one key for them. If the key is difference, TV can not access USB-HDD.
If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience.
http://electro-medical.blogspot.com/

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1 Answer

no power, even the battery is new and fully charge


If the mobile phone does not switch on, it is called a dead mobile.
It can be due to many reasons
1. Water damage
2. Fall down
3. Not used for a long time ( Mostly battery is down)


(1) Check the Battery. It should show 3.7 volts or as written on the battery.

(2) Check the Battery Connector
Check two things (a) Voltage coming or not (b) shorting
Note : If there is shorting then clean the circuit in ultrasonic cleaner (Remove display, camera, etc before putting it in ultrasonic cleaner )
Clean the circuit with a soft brush and make it dry with a hair dryer or ****er.
If the shorting doesn't go it may be due to shorting in an ic,capacitor or circuit. if shorting is in ic u can check it by attaching a battery then press the on-off switch keep the battery for 10-15 seconds. after that remove the battery and check which ic becomes hot. Reball or replace that ic. If shorting is in circuit it must be removed by ultrasonic cleaner
Note - The circuit is made of three layers. if there is shorting in the middle layer it cannot be removed
(3) Check the On/Off switch & voltage at on-off switch
Note - Connect a charger. If charging is shown on display then the problem is with the on/off switch or software problem

(4) Try flashing the mobile.

(5) If flashing cannot be done then there is hardware fault we first dry solder the Flash IC & RAM IC and check in the Software. if flashing cannot be done then we dry solder/reball/replace flash ic & RAM ic.After that dry solder/reball/replace Power IC, Network IC, Crystal, CPU :D:D

Jul 18, 2011 | Cell Phones

1 Answer

my e63 is not turning on


If the mobile phone does not switch on, it is called a dead mobile.
It can be due to many reasons
1. Water damage
2. Fall down
3. Not used for a long time ( Mostly battery is down)


(1) Check the Battery. It should show 3.7 volts or as written on the battery.

(2) Check the Battery Connector
Check two things (a) Voltage coming or not (b) shorting
Note : If there is shorting then clean the circuit in ultrasonic cleaner (Remove display, camera, etc before putting it in ultrasonic cleaner )
Clean the circuit with a soft brush and make it dry with a hair dryer or ****er.
If the shorting doesn't go it may be due to shorting in an ic,capacitor or circuit. if shorting is in ic u can check it by attaching a battery then press the on-off switch keep the battery for 10-15 seconds. after that remove the battery and check which ic becomes hot. Reball or replace that ic. If shorting is in circuit it must be removed by ultrasonic cleaner
Note - The circuit is made of three layers. if there is shorting in the middle layer it cannot be removed
(3) Check the On/Off switch & voltage at on-off switch
Note - Connect a charger. If charging is shown on display then the problem is with the on/off switch or software problem

(4) Try flashing the mobile.

(5) If flashing cannot be done then there is hardware fault we first dry solder the Flash IC & RAM IC and check in the Software. if flashing cannot be done then we dry solder/reball/replace flash ic & RAM ic.After that dry solder/reball/replace Power IC, Network IC, Crystal, CPU :D:D

Jun 15, 2011 | Cell Phones

2 Answers

dead


If the mobile phone does not switch on, it is called a dead mobile.
It can be due to many reasons
1. Water damage
2. Fall down
3. Not used for a long time ( Mostly battery is down)


(1) Check the Battery. It should show 3.7 volts or as written on the battery.

(2) Check the Battery Connector
Check two things (a) Voltage coming or not (b) shorting
Note : If there is shorting then clean the circuit in ultrasonic cleaner (Remove display, camera, etc before putting it in ultrasonic cleaner )
Clean the circuit with a soft brush and make it dry with a hair dryer or ****er.
If the shorting doesn't go it may be due to shorting in an ic,capacitor or circuit. if shorting is in ic u can check it by attaching a battery then press the on-off switch keep the battery for 10-15 seconds. after that remove the battery and check which ic becomes hot. Reball or replace that ic. If shorting is in circuit it must be removed by ultrasonic cleaner
Note - The circuit is made of three layers. if there is shorting in the middle layer it cannot be removed
(3) Check the On/Off switch & voltage at on-off switch
Note - Connect a charger. If charging is shown on display then the problem is with the on/off switch or software problem

(4) Try flashing the mobile.

(5) If flashing cannot be done then there is hardware fault we first dry solder the Flash IC & RAM IC and check in the Software. if flashing cannot be done then we dry solder/reball/replace flash ic & RAM ic.After that dry solder/reball/replace Power IC, Network IC, Crystal, CPU :D:D

Jun 15, 2011 | Nokia N73 Cellular Phone

2 Answers

tv flashes red then shuts itself off after only on for 3 min


I have not repaired this particular model. But sometimes there is an IC they refer to as a standby IC. It may also be known as a controller IC. I call it the powerline regulator. And in one case the older Sony Projection TV had an audio output IC with a standby built into this IC. So,this advice is refering to a standby IC. And this IC may be in another form already mentioned. Please visit a Sony Tech. The work inside a projection TV is very complicated, you will need to see the specialist. Give them this note and go from here. Let me know how they handle the repair.Thanks for asking and good luck!

Aug 02, 2010 | Sony KP-65WS500 65" Rear Projection...

1 Answer

broken pitch control


Yep, time to replace the pitch control. You can attempt to do this yourself, however good soldering skills are required (not the time to learn). You will have to desolder the old pitch control, and solder on the new one. Which is why I say, now is not the time to practice soldering on your turntable. You could actually cause more damage.

If after replacing the pitch control, you still have the same issue, then there is something wrong with the drive on the unit. The drive is controlled by various integrated circuits (IC's), and they are known to short out every now and then. The problem is isolating the correct IC. FYI, Technics is starting to discontinue parts, and 1 of the main IC's on this unit is no longer available (IC302 - Nand Gate).

You can order the PITCH CONTROL HERE.

DJ PRO LAB
www.DJPROLAB.com

Apr 06, 2008 | Technics SL-1210 Turntable

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