Tuesday, April 28, 2015

LOT WINDING DATA Hitachi Sansui Toshiba Solidtron Sharp Samsung and Gold Star CTVs

Flyback Transformer winding Data - Hitachi _  Sansui _  Toshiba _  Solidtron _  Sharp _  Samsung _ Gold Star & Panasonic CTVs
Flyback TLF15644F1 Panasonic
TLF4N052 TLF4G503F
Flyback 154-177B Goldstar
154-064P FCK-14B047 JF0501-1206 JF0501-91802 154- 374A 6174Z-6238L
Flyback FOK14A001 Samsung
AA26-002101A FSV-14A004C
Flyback F0193PEN1-SA Sharp
F0194PEN1-SA F0147PE-M BCS21-2647 F0101KMSA F0102KM F02299PE-B F0141PE-M
Flyback FSV20A099 Sanken
Flyback 2435521 Hitachi
Flyback TFB4122BD Toshiba
TFB4125CH
Flyback DCF-2077D Solidtron
DCF-2077A DCF-1577 FSA16012M
Flyback JF0501-1206 Sansui
154-177B 154-064P FCK-14B047 JF0501-91802 154-374A 6174Z- 6238L
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Sunday, April 26, 2015

LOT Internal Winding DATA For SAMSUNG KONKA and CHINESE KIT LOTs

Samsung LOT _ FCM14A025 _ Data; TCL LOT _ JF0501-1914 _ Data _ China Brand  LOT _ BSC24-014001D BSC25-N0321 BSC25-N1534 BSC25- N1634 BSC25-Z1003 BSC25-Z2705 BSC25-Z2706 BSC25-N0313 _ Data _ China Brand LOT_ BSC24-014001D BSC25-N0321 BSC25-N1534 BSC25-N1634 BSC25-Z1003 BSC25-Z2705 BSC25-Z2706 BSC25-F1125A _ Data _ Konka LOT_ BCS25-N1603 BSC25-0113 BSC25-023D _ Data _ Konka LOT _ BCS25-N1603 BSC25-0113 BSC25-2678S _ Data
Samsung LOT _ FCM14A025 _ Data
Samsung LOT _ FCM2014FL _ Data
TCL LOT _ JF0501-1914 _ Data
China Brand  LOT _ BSC24-014001D BSC25-N0321 BSC25-N1534 BSC25-
N1634 BSC25-Z1003 BSC25-Z2705 BSC25-Z2706 BSC25-N0313 _ Data
China Brand  LOT BSC25-F1125A _ Data
Konka LOT_ BCS25-N1603 BSC25-0113 BSC25-023D _ Data

Konka LOT _ BCS25-N1603 BSC25-0113 BSC25-2678S _ Data
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Saturday, April 25, 2015

LINE FAULTS TO PLASMA TVs

What is Plasma?
Plasma is by far the most common form of matter.
Plasma in the stars and in the tenuous space between them makes up over 99% of the visible universe and perhaps most of that which is not visible.  Plasma consists of a collection of free-moving electrons and ions - atoms that have lost electrons.
Energy is needed to strip electrons from atoms to make plasma. The energy can be of various origins: thermal, electrical, or light (ultraviolet light or intense visible light from a laser).  With insufficient sustaining power, plasmas recombine into neutral gas.
Plasma can be accelerated and steered by electric and magnetic fields which allows it to be controlled and applied. Plasma research is yielding a greater understanding of the universe.
It also provides many practical uses: new manufacturing techniques, consumer products, and the prospect of abundant energy.
What is Plasma Display Panel - How does it work?
Plasma display panel is the latest display technology and the best way to achieve flat panel displays with excellent image quality and large screen size that is easily viewable in any environment.  PDP is an array of cells, known as pixels, which are composed of 3 sub-pixels, corresponding to the colors Red, Green and Blue. Gas in a plasma state is used to react with phosphors in each sub-pixel to produce colored light (red, green or blue). These phosphors are the same types used in Cathode Ray Tube(CRT) devices such as televisions and standard computer monitors. You get the rich, dynamic colors that you expect.  Each sub-pixel is individually controlled by advanced electronics to produce over 16 million different colors.  All of this means that you get perfect images that are easily viewable in a display that is less than 6 inches thick.
LINE FAULTS ON SCREEN
Vertical bar when Power off/on (Mis-discharge)
PDP Power on Mode external input (regardless of wire/wireless signal but it’s easy to reenact in wireless signal)
Remove Power Cord (Power’s off) After about 20minutes, insert Power cord (automatically the Power’s on and the vertical bar is .

Cause Control board malfunctions when Power off/on.
Countermeasure Change some parts on Control board.
Changing parts  A32_CTRL_03 B/D (Marked on PCB) -.R14,17,18,21 : 330 > 4.7K (Chip Resistor) -R15,16,19,20 : 22K > 4.7K (Chip Resistor) -.C504, 505 : 0.1uF / 50V add (Chip Capacitor)
Add Open (Green 1 Line) > Add. COF Drive IC inferior.
Symptom
No signal Vertical Bar.
* IC2 DA1(Data Arrange) No.162 Pin output is changing depending on the temperature.⇒ abnormal X-B’d Buffer IC * Room temperature : 2.5V Output (Normal Pin = over 2.8V) * Heated : 1.5V Output(Normal Pin = 2.7V ) ⇒ Bad IC2 (DA1)
Countermeasure Replace IC2
Screen is divided in top and bottom, and vertical bar appears.
P13 CONNECTOR contact point inferior CHECK.
P13 CONNECTOR SIGNAL CHEK.
ADDRESS bar appears in the right bottom of the screen. (X-BOARD BOTTOM LEFT)
The connecting of X-Board bottom left connector is bad.  Reassemble it.
The 2/5 right part of the screen is blank. (Bottom left X-BOARD )
No 12V supply to bottom left X-Board.  Connect 12V line.
Check 12V line from SMPS to X-BOARD.
The 2/5 right of the screen is broken. (Bottom left X-BOARD)
Check Bottom left X-BOARD 5V.( If 0V, it happens )
Check 5V line from SMPS to X-BOARD
The 3/5 bottom left of the screen is Blank. (Bottom Right X-BOARD)
No 12V supply to bottom right X-Board.
No Va(70V) supply to bottom right X-Board.
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SAMSUNG B4K-5 BN96 SMPS SCHEMATIC

SAMSUNG LCD TV SMPS CIRCUIT DIAGRAM BN96  B4K5
SCHEMATICS [Click on the schematics to Zoom In]

Wednesday, April 22, 2015

SAMSUNG LA22D400 – 22Inch LCD TV Repair Help – FROM MY SERVICE TABLE TODAY

The set received for repair in dead condition.  Was damaged by thunderstorm; the party said.  No Power LED at the front panel, or any indication at Power Up.
The main board model number is: BN9404619V
The SMPS [Power] board model number is: PS1V680511B
Disconnected the power to TV; unscrewed out the power board from from the set, and checked it.
As usual as any technician do; I too checked the AC mains fuse at the main power supply regulator [SMPS] board.  The 5Amps 250V Glass Cartridge type fuse was blown out.  A clear indication of shorted component/s at the SMPS board.
Checked the DC resistance across the main filter capacitor.
Found abnormal.  Less than 5 Ohms, measured for both the meter polarity.
Indicates a direct short-circuit due to any shorted component/s at the primary side of the SMPS section circuit itself.
Checked the mains bridge rectifier first.  OK.
Checked all the capacitors [non-electrolytic] connected across the AC power supply.
All was found OK.
Checked the MOV [Metal Oxide Varistor]; an over-voltage protection device; connected across AC found shorted.  Clear indication that the set has hit by a very high voltage spike due to lightning.
De-soldered out the MOV from circuit.
Now checked the DC resistance across the AC main capacitor.  The short circuit still persists.
The only component that can be shorted other than the MOV is the STR.  De-soldered out the STR from the circuit, and now there was no short circuit.
Replaced both STR and MOV. As a precautionary measure; I've replaced the main filter capacitor too; as it might have already been hit by a high voltage spike.  Even though it will work now; might poise some problems in future.
POWER [SMPS] - PS1V680511B   (Includes the back-light Inverter)
 AFTER REPAIR
Original Remote control model number to this TV is
AA59-00499A [shown in the above picture]
Universal remote control set-up codes
0030 0049 0050 0066 0076 0101 0102 0119 0143 0152 0154 0166 0181 0195 0209 0217 0240 0307 0318 0365 0379 0414 0421 0488 0492 0601 0624 0637 0642 0827

Sunday, April 19, 2015

AIWA AV S17U - Stereo AV Receiver CIRCUIT DIAGRAM - Power - Front Control and Main

Used ICs - N62445AFP_BU4052BC _BU4066B_BA7625_TC4053BF_uPD780226-016
SCHEMATICS
Power
 
Front control
Main
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Saturday, April 18, 2015

SYMPHONIC 20 Inch LCD TV HOW TO ENTER SERVICE MODE – FLICKER ADJUST – SCHEMATIC DIAGRAM

Initialize _ Initial Settings data values _ Flicker Adjustment _ Service Mode _ Power and Back-light inverter Circuit diagram _ SYMPHONIC LCD-B20A6  LCD-B20B6 20" COLOR LCD TELEVISION
SERVICE MODE
* Turn the power on. (Use main power on the TV unit.)
* Press STANDBY, 2, 7, 1, and MUTE buttons on the remote control unit in that order within 5 seconds. [To cancel the service mode, press STANDBY button on the remote control.]
TO INITIALIZE [Factory Default]
To put the program back at the factory-default, initialize the LCD television as the following procedure.
* Turn the power on. (Use main power on the TV unit.)
* To enter the service mode, press STANDBY, 2, 7, 1, and MUTE buttons on the remote control unit in that order within 5 seconds. [To cancel the service mode, press STANDBY button on the remote control.]
* To initialize the LCD television, press “DISPLAY” button on the remote control unit.
* Confirm "FF" indication on the upper right of the screen.
INITIAL SETTINGS (Data Values)
FLICKER ADJUSTMENT
> Enter the Service mode.
> Press 2 button on the remote control unit.
The following appears on the screen.
                          VCOM
                            128
If Flicker Adjustment is not fit, the screen becomes the following.
Press CH Up / Dn buttons on the remote control unit so that flash stops.
SMPS & BACK-LIGHT SCHEMATIC
EXPLODED VIEW
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JBL MARINE MA6004 – 4 CHANNEL POWER AMPLIFIER – CIRCUIT DIAGRAM

MA6004 JBL MARINE POWER AMPLIFIER SCHEMATIC
The MA6004 can be set up for stereo 4-channel, 3-channel or bridged 2-channel operation.   Minimum speaker impedance for stereo operation is 2 ohms.  Minimum speaker impedance for bridged operation is 4 ohms.
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