Technical description and composition of the HYUNDAI H-LCD3200 TV, panel type and applicable modules. The composition of the modules.Hyundai
Model: H-LCD3200
Panel: LC320WX3 (SL) (C1)
T-CON: 6870C-0154C
Inverter (backlight): 6632L-0443B (KLS-EE32HK14A) REV: 02
PWM Inverter: OZ9966SN
MOSFET Inverter: 2SK4075
Power Supply (PSU): JSK4200-014 - 81C039684 REV: 1.4
PWM Power: L6599D (PWM Resonant), FAN7530MX (PFC), ICE3B0365 (Standby)
MOSFET Power: 2SK3568, 2SK2837 (PFC)
MainBoard: JUG7.820.265 ver1.00
IC MainBoard: SVP AX68 7668LF, HY50U281622FTP-4, 25X80, 24C64, TDA9886
Tuner: AFT7 / W003
Technical Specifications H-LCD3200
HYUNDAI H-LCD3200
General recommendations for repairing TV LCD
It is advisable to start the repair of the HYUNDAI H-LCD3200 TV with an external examination of all its components, both internal electronic components and external. Inspection is also subject to body elements, control buttons, screen, connectors and cords. Often, by the external signs and nature of some damage, it is possible to draw preliminary conclusions and determine a further algorithm for troubleshooting. Swollen electrolytic or cermet capacitors, charred resistors, ring cracks in the soldered terminals of the elements - all this can significantly help the master to determine the causes and consequences of the malfunction of the TV.
Malfunctions of the power module can be expressed in different ways, for example, the HYUNDAI H-LCD3200 does not turn on at all and the control lamps on its front panel do not light up and do not blink, there are no signs of operability. In this case, first of all, it is necessary to check the fuse at the mains input. If it is broken, then you should check for breakdown of the PN junctions of the rectifier bridge diodes and the key transistor of the N-FET converter, which can either be on a separate radiator or integrated with a PWM controller in a common chip. Possible options.
If a breakdown of the power switch of the flyback converter of the power supply unit is detected, it should be remembered that it does not fail without any reasons that should be sought by checking other elements of the primary circuit, such as electrolytic capacitors, a PWM controller that can only be checked by replacement, as well as others semiconductor elements (diodes, transistors, zener diodes).
If the power module uses an active KKM circuit (power factor control), troubleshooting is somewhat more complicated.
If the HYUNDAI H-LCD3200 does not have an image, but there is sound, there is a possibility of a malfunction of the backlight or power converter. You should also make sure that the electrolytic capacitors of the secondary rectifiers of the common power supply are working.
Repairing the inverter is difficult because in case of any malfunction or emergency, even with uneven wear of the lamps, a protection is triggered, which turns it off for fire safety. Diagnostics become impossible and protection needs to be disabled.
All necessary precautions must be observed when disabling the inverter protection during diagnostics and not leaving it disconnected after the repair is completed.
Once again, we remind TV users: you should not make attempts to repair it yourself without the appropriate knowledge, experience and the necessary qualifications! Trust the repair only to professionals with sufficient experience in the field of electronic equipment repair.Repair MainBoard
The appearance of the MainBoard JUG7.820.265 is shown in the figure below:JUG7.820.265
JUG7.820.265 can be used on TVs:
AKAI LTA-32C904M (Panel V320B1-L06), AKAI LTA-26C904 (Panel V260B1-L02 ), HYUNDAI H-LCD3200 (Panel LC320WX3 (SL)(C1)), SUPRA STV-LC2611W (Panel T260XW02), SUPRA STV-LC3204WD (Panel LTA320AP02).
PSU Advanced
According to the conditions of compliance with modern world standards for household switching power supplies, the JSK4200-014 module provides for the use of a Power Factor Correction unit. The PFC circuit is a flyback converter based on the FAN7530MX PWM controller. The reactance of an electrolytic capacitor of a line filter at a frequency of 50-60 Hz is usually not more than 20-30 ohms and its charge directly from the network through open diodes could reach tens of amperes per pulse if no filtering were applied.
As a result of the PFC conversion, an increased voltage on the capacitor (about 380V) cannot directly open the rectifier diodes, on the anode of which the voltage will always be slightly less (about 300V) and then its charging current will always be limited by the elements of the PWM controller. As a result, the envelope of the high-frequency pulses of the consumed current will repeat the shape and phase of the input sinusoidal voltage. The presence of an increased voltage (+ 380V) on the network capacitor indicates the serviceability of the PFC node.
The appearance of the power supply
Main features of the HYUNDAI H-LCD3200 device:
Installed matrix (LCD panel) LC320WX3 (SL) (C1).
In matrix alignment, the Timing Controller (T-CON) 6870C-0154C is used.
To power the backlight, an inverter 6632L-0443B is used, it is controlled by the OZ9966SN PWM controller. As power elements of the inverter, keys of the 2SK4075 type are used.
The necessary supply voltages for all nodes of the HYUNDAI H-LCD3200 TV are generated by the JSK4200-014 power supply module or its analogs using L6599D (PWM Resonant), FAN7530MX (PFC), ICE3B0365 (Standby) microcircuits and 2SK3568, 2SK2837 (PFC) power switches .
MainBoard - the main board (motherboard) is a JUG7.820.265 module, using SVP AX68 7668LF, HY50U281622FTP-4, 25X80, 24C64, TDA9886 and other chips.
The AFT7 / W003 tuner allows you to receive television programs and tune to channels.
Additional technical information about the panel:
Brand: LG.Philips LCD
Model: LC320WX3-SLC1
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: S-IPS, Normally Black, Transmissive
Active Area: 697.68x392.26 mm
Surface: Antiglare, Hard coating (3H)
Brightness: 400 cd / m²
Contrast Ratio: 900: 1
Display Colors: 16.7M (8-bit), CIE1931 72%
Response Time: 8 (G to G)
Frequency: 60Hz
Lamp Type: 14 pcs EEFL Embedded (Inverter)
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 12.0V
HYUNDAI H-LCD3200 TV with LC320WX3 LCD, 32 "(81 cm) diagonal size in 16: 9 format. Screen brightness of 500 cd / m² is ensured by backlighting with CCFL (EEFL) fluorescent lamps. Contrast, as the ratio of maximum brightness to minimum, is 1000: 1. It is possible to view images in high quality HD at a resolution of 1366x768 pixels in the standard of graphic decomposition 720p (HD Ready). The input high-frequency or video signal can be processed in analog systems PAL, SECAM, NTSC. Graphic processing and digital signal generation takes place in one hundred Dart 480i, 480p, 576i, 576p, 720p, 1080i, 1080p.
The power of the sound system 10 W (2x5 W) provides two speakers. The audio processing system NICAM STEREO is used.
The external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV x3, audio x4, S-Video, component x2, VGA, HDMI x2. An output for connecting headphones is provided. To connect a computer or laptop to this TV model, a VGA (D-Sub 15) connector is used on the TV case, this interface supports resolutions: 640x480, 800x600, 1024x768.
Attention! The HYUNDAI H-LCD3200 LCD TV panel LC320WX3 (SL) (C1) is its most expensive component.
Avoid hitting the glass and exerting pressure on the screen to avoid permanent damage to the LCD panel!