LG 29FX5R, LG 29FX5R-LA, LG 29FX5A, LG 29FX5A-LA schematic diagram and PWB - using STR6756 or STR6754

 LG  29 inch CRT TV - schematic diagram and PWB - using  STR6756 or STR6754 – switching power regulator - Models LG 29FX5R, LG 29FX5R-LA, LG 29FX5A, LG 29FX5A-LA

Printed circuit boards

Schematic diagram - Full

Schematic diagram - Split

Horizont 42LE5131, Hisense RSAG7.820.5338 and AOC MIP988A-K2 SMPS board schematic

 

Horizont 42LE5131D SMPS (power supply board) schematic

RSAG7.820.5338 SMPS (power supply board) schematic - Hisense 50H7GB1, 50H7GB, 50H7C

MIP988A-K2 SMPS (power supply board) schematic – AOC LC42S05M, AOC LC42505M, LCD-42CA330

Thomson 46FR-3230 SCHEMATIC DIAGRAM (Circuit diagram)

 

National RC4895M clock radio circuit diagram (schematic)-USED ICs TMS1943NL, AN217BPB

 

Block diagram

Schematic diagram

LG 42inch LCD TV power board [SMPS] EAY62810501 schematic and test methods

 

LGP42-13PL1 LED TV Power EAY62810501 schematic

On Condition : In a moment of Power ON Signal activated, the current of 3.5V output should be limited within 40mA(Max) at LCD TV condition for stability.
Do not turn “Power ON” Signal on at the load condition of 3.5V output, more than 40mA.

* Total regulation for each output circuit includes the results of input voltage variation, load variation, warm-up drift and temperature change.
* Maximum input Wattage Rating: Under 85W

This Power Supply has below-mentioned protections.
* Short circuit protection between different output terminals is not considered.
* Trip point for over voltage indicates the operating point when the output voltage slowly increases.
* The conditions of Over Current measurement Multi output (3.5V,12V,24V) is nominal load state except an over current measurement.

Connector voltages

Test methods

Block diagram

Schematic diagram

Elenberg LT-72602E Power board schematic – Elenberg 1402 - 2108 - 21F08 - 29F08 - Elenberg - 21SL39 CAMERON full schematic, Factory menu (Service Menu)

 Elenberg LT-72602E Power board schematic

Elenberg 1402/2108/21F08/29F08 (Elenberg) 21SL39 (CAMERON) CRT TVs - full schematic, Factory menu (Service Menu)

Factory menu
Some adjustments must be performed in the Factory menu. You can enter the Factory menu in the following way:
1. Press the MENU button on the remote control then press the Q.VIEW button on the remote control at least 5 times immediately.
2. Press the MENU buttons to select the desired Factory menu pages or press 0-9 number buttons to enter the Factory menu pages directly and then press the PROG.+/- buttons to select the desired items.
3. Press the VOL+/- buttons to change the settings.
B+ Adjustment
Test Equipment: Multifunction meter
1. Operate the TV set with AC 110-240V(50/60Hz).
2. Receive Television broadcast signal, set PICTURE to Normal mode.
2. Connect the multifunction meter + lead to C960 and GND. Adjust the RP950 until the meter reading the proper DC value (model 1402/2108/21F08: B+=107±0.5Vdc; model 21SL39: B+=115±0.5Vdc; model 29F08: B+=135±0.5Vdc)

High voltage check and filament voltage check
Test Equipment: High voltmeter
1. Make sure AC power supply and +B are within pointed range before calibrating high voltage.
2. Connect high voltmeter to anode (G4) of CRT.
3. Turn on the TV, set the BRIGHTNESS and CONTRAST to the minimum (zero beam current), swap to AV mode (No any signal applied).
4. High voltage please see the related model BOM.
5. Filament voltage measured by virtual value meter please see the related model BOM, usually within the range of 6.3±0.2Vrms.
Grid voltage adjustment

Enter into FAC3 and select VG2, then adjust potentiometer to IN/OUT flash on the screen.

Receive PHILIPS five circles pattern after settings finishing, set PICTURE to Normal mode.

RF AGC adjustment
1. Receive a 60dBμ V gray scale signal(PAL or SECAM).
2. Enter Factory menu and select AGC TAKE OVER, then adjust it until the picture noise is just disappeared.

FOCUS adjustment
1. Receive five circles pattern, adjust the pattern to Normal mode.
2. Adjust focus potentiometer (horizontal output transformer) so that the center and four corners of pattern are the best focus.

Horizontal scanning, vertical scanning and geometry correction adjustment (adjust with PAL/SECAM and NTSC signal separately)

Receive five circles pattern signal, enter into factory menu to call up FAC2.

VERT SLOPE 50(60)  XX Adjust it so that horizontal midline of the pattern superpose with the black edge of the pattern.

VERT SHIFT 50(60)  XX Adjust it so that the pattern midline superposes over CRT geometric center.

VERT AMPLE 50(60)  XX Adjust it so that the picture vertical reproduction display ratio is more than 92%.

S CORR 50(60)  XX Adjust it so that upper pane and bottom pan of the pattern are the same as the middle pane.

V.LIN.CTRL 50(60) = 0

V． LINEARITY 50（ 60）XX Adjust vertical linear

VERT ZOOM 50(60)  25 Adjust vertical amplitude（ fixed value 25）

2. Call up FAC1

EW WIDTH 50（ 60）XX Adjust it so that the picture horizontal reproduction display ratio is more than 92% (H- size adjustment).

HOR.SHIFT 50（ 60）  XX Adjust it so that the left half is symmetrical with the right half (H. CEN correction).

EW PARABOLA 50（ 60）  XX Adjust it so that parallelogram will be transformed to rectangle or trapezium (Receive cross hatch signal)(Parallelogram correction).

TRAPEZIUM 50（ 60）  XX Adjust it so that trapezium distortion is just disappeared (Receive cross hatch signal)(Trapezium).

UC PARABOLA 50（ 60）  XX Adjust it so that upper corner (left and right) vertical line are straight line (Receive cross hatch signal)(Upper corner pincushion).

LC PARABOLA 50（ 60）XX Adjust it so that bottom corner (left and right) vertical line are straight line (Receive cross hatch signal)(Bottom correction pincushion)

HOR.BOW 50（ 60） XX Adjust it so that vertical line is the straight line.(Receive cross hatch signal) (Bow correction).

PARALLEL 50（ 60）  XX Adjust it so that left and right line are straight lines (Pincushion correction).

White balance adjustment (PAL or SECAM signal)
1. Enter into menu firstly and set COLOR mode to normal.(9300K)
2. Enter into AV mode and receive left black right white signal which with color sync signal.
3. Plug XS805, adjust it automatically with white balance adjustment software, enter into factory menu when adjustment is OK, then enter into FAC 6、 FAC 7, FAC 8 menu to check the following data are consistent with data in computer.

Standard： Color temperature 9300K （ X=0.284 Y=0.299） FAC 6

Cold color： Color temperature 12000K（ X=0.272 Y=0.279） FAC 8

Warm color： Color temperature 6500K （ X=0.313 Y=0.329） FAC 7

SCHEMATIC DIAGRAM

Changhong, Philips VES15,1HE SMPS (power supply) 17ips61-3p1 19", 24" and 28" Slim Integrated Power Supply schematics

 

CHANGHONG SMPS (POWER SUPPLY SCHEMATIC)

PHILIPS VES15 1HE SMPS (SCHEMATIC)

17IPS61-3p1 19", 24" and 28" Slim Integrated Power Supply

17IPS71P-R4 – 32, 40 and 48 inch power supply